← Back to Archives
VOLUME 2, ISSUE 2, FEBRUARY 2014
Series Compensated Transmission Line Protected With Mov
NEHA KHANZODE, SNEHAL NEMADE, NEETIN PUNSE, VIVEK AKARTE, ANKUSH DHANORKAR
Secure Routing in Heterogeneous Wireless Sensor Networks with Intrusion Detection and a Differential Evolution based Thermal Aware Optimization Algorithms
A.SHAKIL AHMED, R.VINOTH, M.E.HARIKUMAR, AJITH.B.SINGH, K.NIVETHITHA
Ordering And Suggesting Popular Itemsets In Pharmacy Using Modified Apriori Algorithm
A.NAGASRI, B.SUJATHA, CH.BHAVANI B.RAVINDER REDDY, B.SATHISH GUPTHA
Optimal Reactive Power Planning And Real Power Loss Minimization Using Cuckoo Search Algorithm
DR. T.GOVINDARAJ, S.UDAYAKUMAR
Solving Environmental Power Unit Commitment with POZ Constraint Using Memetic Evolutionary Algorithm
DR. T.GOVINDARAJ, C.SURESH KUMAR
Firefly Algorithm for Optimal Power Flow Considering Control Variables
DR. T.GOVINDARAJ, V.TAMILDURAI
A Novel Approach Of Train Prevention System From Collision Using AVR Microcontroller
K.GOVINDARAJU, F.PARVEZ AHMED, S.THULASI RAM, T.DEVIKA
Minimization of Active Part Cost of a 100 kVA Distribution Transformer Using Exhaustive Search Method
H.D. MEHTA, RAJESH PATEL
Implementation of Adaptive Hysteresis Current Controlled Shunt Active Filter For Non-Linear Loads
SHAHNA HASSAN
Performance analysis of PV fed single phase Z-source inverter
KANNAN S. A, RAKESH R, AMAL M R, KAMALA DEVI V, PROF. DR. JAYARAJU M
Design and Simulation of Efficient DC-DC Converter Topology for a Solar PV Modular Integrated Converter System
SAJIN M, SNEHA EVS, KAMALA DEVI V
An Efficient Closed Loop Controlled Bridgeless Cuk Rectifier for Pfc Applications
SHALINI.K, MURTHY.B
Bidirectional Isolated Dc-Dc Converter for Fuel Cells and Supercapacitors Hybrid System
PREETHI PETER
An Efficient Bridgeless PFC Cuk Converter Based PMBLDCM Drive
JOMY JOY, AMAL M.R, RAKESH R, KANNAN S.A, ANNA RAINA
Modelling and Analysis of MPPT Techniques for Grid Connected PV Systems
RAKESH R, KANNAN S A, JOMY JOY, KAMALA DEVI V, PROF.(DR). JAYARAJU M
Space Vector Modulation Based ZSCC Reduction between Parallel Inverters and Motor Control
NAVADEEP.S, MR.R.KARTHIK
Smart Energy Management using Wireless Technology
RATHI.B, PROF.S.RAJA, ASST. PROF. S.SHAJILA RANI
A Novel Approach Automatic Digital Door Opening And Closing Security System
M.GOWSALYA, M.SANGEETHA, K. SRI DHIVYA KRISHNAN, N.DIVYA, T.DEVIKA
High Voltage DC â DC Converter for Line Type Modulator used in Radar Transmitters
AMAL M R, KANNAN S A, RAKESH R, JOMY JOY, MANGALA DEVI K T
Modeling of Solar Power Based Quasi-Z-Source Inverter to Supply BLDC Motor
NEETHU JOHNSON, KANNAN S.A, GIBI PAUL, JUBY JOSE, JUSTIN GEORGE
A Study on Speaker Recognition System and Pattern classification Techniques
DR E.CHANDRA, K.MANIKANDAN, M.S.KALAIVANI
Performance Evaluation of Table Driven Multipath Routing Protocols in MANET under varying Nodes, Traffic load & Pause time
ROHIT JAIN, RAMPRASAD KUMAWAT, SANDEEP MANDLIYA, MUKESH PATIDAR
Design Approach towards High Performance Memory of 6 Transistors SRAM Cell Using 45nm CMOS Technology
NUPUR G.NANOTI, PRAFULLA D.GAWANDE
Segmenting Web Pages Using Correlation Clustering And Reducing Noisy Data Using Simple K-Mean Algorithm
RAJDEEPA B, PREMAVATHI M
Abstract
Series Compensated Transmission Line Protected With Mov
NEHA KHANZODE, SNEHAL NEMADE, NEETIN PUNSE, VIVEK AKARTE, ANKUSH DHANORKAR
Abstract: This paper presents an analysis of the effects of series line compensation levels on the transmission line voltage profile, transferred power and transmission losses for different static load models. For this purpose, a simple model is developed to calculate the series and/or shunt compensated transmission line load voltage. Consequently, different shunt and series compensation levels are used with several voltage sensitive load models for two different line models. It is observed that the compensation level is significantly affected by the voltage sensitivities of loads. Moreover, the voltage level of the transmission is an important issue for the selection of the shunt and series capacitor sizes when load voltage dependency is used. Rapid load growth and low water levels of the reservoirs create much stress on the power balance problem and on the existing transmission lines. In paper, a protection system for transmission lines using series capacitors is discussed in detail.
Abstract
Secure Routing in Heterogeneous Wireless Sensor Networks with Intrusion Detection and a Differential Evolution based Thermal Aware Optimization Algorithms
A.SHAKIL AHMED, R.VINOTH, M.E.HARIKUMAR, AJITH.B.SINGH, K.NIVETHITHA
Abstract: Wireless sensor networks and VLSI design are tremendously being used in different environments to perform various monitoring tasks such as search, rescue, disaster relief, target tracking and a number of tasks in smart environments. Node localization is required to report the origin of events, assist group querying of sensors, routing and to answer questions on the network coverage. This paper reviews different approaches of node localization discovery in wireless sensor networks. Intrusion detection in Wireless Sensor Network (WSN) is of practical interest in many applications such as detecting an intruder in a battlefield. This paper describes a thermal modeling approach for VLSI Floor planning that is easy to use and computationally efficient. It is based on Differential Evolution (DE) algorithm based thermal-aware floor-planning framework which optimizes both chip area and total wire length. We discuss the network connectivity and broadcast reach ability, which are necessary conditions to ensure the corresponding detection probability in a WSN. Our simulation results validate the analytical values for both homogeneous and heterogeneous WSNs. The experimental result shows that DE can produce good optimal thermal solutions for MCNC benchmarks.
Keywords: Intrusion detection, Wireless Sensor Network (WSN), Differential Evolution algorithm, B*tree, Hotspot tool
Keywords: Intrusion detection, Wireless Sensor Network (WSN), Differential Evolution algorithm, B*tree, Hotspot tool
Abstract
Ordering And Suggesting Popular Itemsets In Pharmacy Using Modified Apriori Algorithm
A.NAGASRI, B.SUJATHA, CH.BHAVANI B.RAVINDER REDDY, B.SATHISH GUPTHA
Abstract: We considered the problem of ranking the popularity of items and suggesting popular items based on user feedback. User feedback is obtained by iteratively presenting a set of suggested items, and users selecting items based on their own preferences either the true popularity ranking of items, and suggest true popular items. We consider Apriori algorithm with some modifications overcoming the complexity that has been seen in other randomized algorithms. The most effective feature of this approach is that it reduces the number of database scans and complexity.
Abstract
Optimal Reactive Power Planning And Real Power Loss Minimization Using Cuckoo Search Algorithm
DR. T.GOVINDARAJ, S.UDAYAKUMAR
Abstract: Reactive Power planning for the meeting the future demand is necessary for ensuring voltage stability of power systems. New reactive power sources may be installed or VAr output from existing sources may be optimized in reactive power planning. In this work, a new reactive power planning scheme is suggested by optimizing the real power loss and reactive power generation from SVCs in a system. Real power loss minimization results in optimized reactive power flow in the system. This work aims for reactive power planning by optimal reactive power flow and reactive power generation. For optimizing the reactive power, a new nature inspired cuckoo search algorithm (CS) is exploited. The proposed algorithm has less number of parameters and has good convergence quality. The suggested method is tested on the standard IEEE-30 bus system and the results are quite encouraging.
Keywords: Reactive power planning, optimal reactive power flow, Cuckoo search algorithm, Real power loss minimization
NOMENCLATURE
Reactive power planning problem:
Keywords: Reactive power planning, optimal reactive power flow, Cuckoo search algorithm, Real power loss minimization
NOMENCLATURE
Reactive power planning problem:
Abstract
Solving Environmental Power Unit Commitment with POZ Constraint Using Memetic Evolutionary Algorithm
DR. T.GOVINDARAJ, C.SURESH KUMAR
Abstract: A multi-objective ecological power unit commitment problem is developed to consider the objectives of minimizing the operation cost and minimizing the emissions from the generation units. In a vertically integrated power system, UC determines when to start up or shut down units and how to dispatch online generators over a given scheduling horizon in order to reduce the operating costs, satisfying the prevailing constraints such as load balance, system reserve requirement, ramp rate limits, and minimum up/down time limits and also minimizing the emission from the generating units. Prohibited operating zones in units are mostly due to mechanical or unitâs physical issues and this should be included as constraint to unit commitment problem so that considerable amount of maintenance cost can be saved. In this paper to minimize the production cost, and minimize emission from the generating unit using memetic evolutionary algorithm.
Keywords: Unit commitment, Prohibited operating zone, Memetic evolutionary algorithm.
Keywords: Unit commitment, Prohibited operating zone, Memetic evolutionary algorithm.
Abstract
Firefly Algorithm for Optimal Power Flow Considering Control Variables
DR. T.GOVINDARAJ, V.TAMILDURAI
Abstract: Optimal Reactive power Dispatch is an important case of optimal power flow (OPF) problems. These optimal power flows problems are solved by using many swarm based algorithms are used. This swarm based algorithms some achieve better global optimal solutions, and many do not achieve the global optimal solution. When this paper study about newly introduce Firefly algorithm and this algorithm how to implement to solve optimal power flow problems and how to achieve better global optimal solutions are briefly discussed in this paper.
Keywords: Optimal Reactive power dispatch, optimal power flow, swarm based algorithm, Firefly algorithm.
Keywords: Optimal Reactive power dispatch, optimal power flow, swarm based algorithm, Firefly algorithm.
Abstract
Fuzzy Controller for Solar Reconfigurable Converter Fed BLDC Drive
DR. T.GOVINDARAJ, N.LAVANYA
Abstract: This paper introduces a new converter called solar reconfigurable converter (SRC) for PMBLDC drive with photovoltaic (PV)-battery application. The basic concept of the SRC is to use a single power conversion system to perform different operation modes such as PV to BLDC drive (dc to ac), PV to battery (dc to dc), battery to BLDC drive (dc to ac), and battery/PV to BLDC drive (dc to ac) for solar PV systems with energy storage. For PMBLDC drive FUZZY LOGIC controller is used to control the motor drive in closed loop. A MPPT technique is also used in DC-DC operation to extract the maximum power from the PV pannel to the battery. In this paper, along the two types of MPPT technique, Incremental conductance algorithm is used for DC/DC operation. PI current controller is used for DC/DC operation(battery charging). This converter solution is appealing for PV-battery application, because it minimizes the number of conversion stages, thereby improving efficiency and reducing cost, weight, and volume. The effectiveness of this proposed method is verified using matlab/simulink software.
Keywords: Solar Reconfigurable Converter (SRC), photo voltaic (PV), BLDC drive, MPPT, Solar power generation.
Keywords: Solar Reconfigurable Converter (SRC), photo voltaic (PV), BLDC drive, MPPT, Solar power generation.
Abstract
A Novel Approach Of Train Prevention System From Collision Using AVR Microcontroller
K.GOVINDARAJU, F.PARVEZ AHMED, S.THULASI RAM, T.DEVIKA
Abstract: Rail transports are facing major challenges in our day to day life. On other hand, it must meet the needs of citizens for quality of moving easily while, on the other, it must provide a valid alternative to other nodes of transport against a backdrop of rising fuel prices and the increasing importance of the effect of transport on the environment. In conventional system the nodes are activated manually, which could lead to human error. In our proposed idea portrays to avoid accidents in the railway system. In this system to prevent the collision between the trains by using sensors. It may helps to save the human life from accidents by implement this paper in railway transport. By implementing this automatic system which could avoid human error. In this research paper if the train goes in a wrong path, the signal is given to the station node which could immediately stop the train and route it in the correct path. The station node also given the instruction to the next train which is coming in the same path and may avoid accident between the trains The proposed system is used to protect the accidents between the trains automatically which helps for safety purpose by using buzzers, switches, microcontroller, LCD,MAX 232 serial communication, IR Sensors, DC Motor, Motor drive, Zigbee transmitter and receiver. The novel system is implemented with the support of embedded processor and the simulation is achieved through Keil C software and results are discussed.
Keywords: AVR Microcontroller, Zigbee, Motor driver, IR pairs, Buzzer. Keil C Software.
Keywords: AVR Microcontroller, Zigbee, Motor driver, IR pairs, Buzzer. Keil C Software.
Abstract
Minimization of Active Part Cost of a 100 kVA Distribution Transformer Using Exhaustive Search Method
H.D. MEHTA, RAJESH PATEL
Abstract: This paper addresses the optimum transformer design problem to minimize the active part cost of three phase core type distribution transformer. The transformer design process involves substantial heuristic exercise to select the design, best suited to a set of specifications. The design problem considers minimization of total cost of core and conducting material, while constraints are imposed on no load losses, total losses and percentage impedance as they are very critical to all day efficiency, overall efficiency and voltage regulation of a transformer. A MATLAB program has been developed which calculates all dimensions and performance parameters of 4080 transformer designs, out of which, the design having the minimum cost, satisfying the manufacturing specifications, BEE standards and constraints is selected. The transformer dimensions and performance parameters are compared with the transformers made by Jyoti Transelect Company, Bhuj, (India) and necessary changes are suggested in transformer dimensions to obtain optimal design
Keywords: Design Optimization, Active part cost minimization, Distribution transformer, MATLAB
NOMENCLATURE List of Symbols
Q kVA rating of transformer ÎĻm Maximum flux in core (webers) AT Number of ampere turns NLV Number of turns in LV or secondary winding NHV Number of turns in HV or primary winding VLV Voltage of LV winding VHV Voltage of HV winding Et Volt per turn Ag gross core area (sq.cm) Bm Maximum flux density in core (Wb/m2) Kg Stacking factor dc Core diameter (cm) Cw Core weight (kg) Clc Core limb centre (cm) Hw Window height (cm) Wds Width of largest stamping (cm) δCL Density of core material (gm/cm3) Alw Weight of aluminium winding (kg) δAL Density of aluminium (gm/cm3) MDLV Mean diameter of LV winding (mm) MDHV Mean diameter of HV winding (mm) ALV Cross sectional area of LV (sq.mm) AHV Cross sectional area of HV (sq.mm) LLHV Load losses in HV (watts) LLLV Load losses in LV (watts) NLLsp Specific no load losses (watts/kg) NLL No load loss (watts) We Exciting power (VA/kg) Im Magnetizing component of no load current (A) Iw Core loss component of no load current (A) I0 No load current (A) Asl Average stack length of LV and HV coil (mm) RBHV Radial build of HV winding (cm) RBLV Radial build of LV winding (cm)
Keywords: Design Optimization, Active part cost minimization, Distribution transformer, MATLAB
NOMENCLATURE List of Symbols
Q kVA rating of transformer ÎĻm Maximum flux in core (webers) AT Number of ampere turns NLV Number of turns in LV or secondary winding NHV Number of turns in HV or primary winding VLV Voltage of LV winding VHV Voltage of HV winding Et Volt per turn Ag gross core area (sq.cm) Bm Maximum flux density in core (Wb/m2) Kg Stacking factor dc Core diameter (cm) Cw Core weight (kg) Clc Core limb centre (cm) Hw Window height (cm) Wds Width of largest stamping (cm) δCL Density of core material (gm/cm3) Alw Weight of aluminium winding (kg) δAL Density of aluminium (gm/cm3) MDLV Mean diameter of LV winding (mm) MDHV Mean diameter of HV winding (mm) ALV Cross sectional area of LV (sq.mm) AHV Cross sectional area of HV (sq.mm) LLHV Load losses in HV (watts) LLLV Load losses in LV (watts) NLLsp Specific no load losses (watts/kg) NLL No load loss (watts) We Exciting power (VA/kg) Im Magnetizing component of no load current (A) Iw Core loss component of no load current (A) I0 No load current (A) Asl Average stack length of LV and HV coil (mm) RBHV Radial build of HV winding (cm) RBLV Radial build of LV winding (cm)
Abstract
Secure Transmission of Medical Images through Biometric Identification
R.SARANYA, DR.R.MEENAKUMARI
Abstract: In the fastest digital world, people have much less time to consult a doctor in person for their health monitoring. It is easier for them to communicate in digital mode by using internet, web services, video or tele- conferencing, etc. But the communication between a patient and doctor must be confidential; While Internet is a wide open source, there may be some brutal attacks like hacking of information which are sent through e-mails. To make the communication or transmission of information in a secured manner, the user needs a Security algorithm for information which he/she wants to send over internet. That information may be text, image, audio or video. This article suggests an image authentication algorithm for providing security to medical images along with end userâs security ensured by using biometric identification. Cryptography based image authentication method is implemented and facial features are used as biometrics parameters.
Keywords: Biometric Identification, Correlation coefficient, DCT, ELM, Face recognition, FAR, FRR, Image authentication.
Keywords: Biometric Identification, Correlation coefficient, DCT, ELM, Face recognition, FAR, FRR, Image authentication.
Abstract
Implementation of Adaptive Hysteresis Current Controlled Shunt Active Filter For Non-Linear Loads
SHAHNA HASSAN
Abstract: The use of nonlinear loads is increasing day by day. Application of these non-linear loads results in an increase in harmonic injection to the grid and low power factor which deteriorate the voltage quality waveforms. Active power filters (APFs) for both harmonic and reactive power compensation have found more attention in industrial applications for harmonic elimination and reactive power compensation. In this Project, an adaptive hysteresis band current controlled active power filter is implemented to eliminate harmonics at source due to three-phase rectifier. The adaptive hysteresis band current controller changes the bandwidth according to modulation frequency, supply voltage, dc capacitor voltage and slope of the reference compensator current wave thereby keeping the switching frequency constant. This controller can overcome the drawback of hysteresis current controller like switching losses, noise etc. Based on instantaneous power theory, harmonics components of load current are generated and used as reference current for APF to be compensated. The simulation of system is performed using Matlab-Simulink and Sim Power System toolbox and results are obtained
Keywords: Shunt active power filter, Harmonic Reduction, Instantaneous reactive power theory, Adaptive hysteresis current control
Keywords: Shunt active power filter, Harmonic Reduction, Instantaneous reactive power theory, Adaptive hysteresis current control
Abstract
Visible Light Communication for Wireless Data Transmission
SATHIYA.T, PROF. E.DIVYA, PROF .S.RAJA
Abstract: Visible Light Communication (VLC) technology, one of the advanced optical wireless communication technologies, in which light in the visible region (375nm-780nm) is used as a medium for data transmission is more secure and achieves high data rates as compared to conventional wireless technologies like Wi-Fi, Bluetooth, Wi-max etc., which use radio waves for communication. While using wireless internet, when more than one device is tapped into the network, then bandwidth got frustrated at the slow speeds. To overcome the shortage of bandwidth we can use light to transfer the data which can be known as âDATA THROUGH ILLUMINATIONâ. The idea behind is that, infra-red remote is slightly modified i.e., LED light bulb that varies in intensity which cannot be followed by the naked eye. It is possible to encode the data in the light by varying the light at which the LEDs flicker on and off to give different strings of 1s and 0s.While using mixtures of red, green and blue LEDs to alter the light frequency encoding a different data channel. If you canât see the light then you cannot access the data so the security would be snapped.
Keywords: Visible light communication (VLC), LED, Wi-Fi.
Keywords: Visible light communication (VLC), LED, Wi-Fi.
Abstract
Design Methodology of Neural Network for Signal Processing
PASHANKI B. MALWANKAR, PRITESH R. GUMBLE
Abstract: There is various new & advance technologies in medical science we are trying to process the information artificially as our biological system performs inside our body. The main focus of the paper is on the implementation of Neural Network Architecture (NNA) with on chip learning in analog VLSI for generic signal processing applications. In the paper we used analog components like Gilbert Cell Multiplier (GCM), Neuron activation Function (NAF) are used to implement artificial NNA. Artificial intelligence through a biological word is realized based on mathematical equations and artificial neurons. The analog component is used for the compress of multipliers and adder in neural network , which is along with the tan-sigmoid function circuit using MOS transistor in sub threshold region. To trained the neural architecture we used the back propagation algorithm in analog domain with new techniques of weight storage. Layout design and verification of the proposed design is carried out using microwind3.1 software tool. The technology used in designing the layout is 45nm CMOS technology.
Keyword: Neural Network Architecture, Back Propagation Algorithm.
Keyword: Neural Network Architecture, Back Propagation Algorithm.
Abstract
Induction Motor Drive With Low Cost Converter And ZVS Inverter
RESHMA P ELDHO
Abstract: This paper proposes a new low cost converter- inverter drive system for induction motor. It proposes a Dual Inductor Converter consisting of a resonant tank, voltage doubler rectifier and a snubber circuit which act as a DC-DC boost converter. Constant duty cycle control is used in the Dual Inductor converter to improve its efficiency. The input current of the converter system is distributed through the two boost inductors making its current ripple amplitude halved at twice the PWM frequency. The output of the converter system is given to the inverter system. For the voltage source inverter, different PWM strategies are compared and the most efficient method is adopted based on its harmonic performance. The THD of PWM, SPWM and SPWM with third harmonic injection is analyzed theoretically. The system have high lifetime and is having low cost.
Keywords: Hysteresis control, DC- DC Converter, AC motor drives, Third Harmonic Injection.
Keywords: Hysteresis control, DC- DC Converter, AC motor drives, Third Harmonic Injection.
Abstract
Performance analysis of PV fed single phase Z-source inverter
KANNAN S. A, RAKESH R, AMAL M R, KAMALA DEVI V, PROF. DR. JAYARAJU M
Abstract: This paper deals with performance analysis of PV fed single phase Z-source inverter connected to Grid. The PV systems are interfaced to the grid invariably by a power electronic inverter. Many of the important characteristics of the PV generation are influenced by the design and performance of the inverter. Hence suitable models of the inverter are needed to analyze the PV systems. The Z source inverter has an ability to perform DC to AC conversion and buck boost operation in a single stage s. Generally, IEC-61730, 61215, 61701 standards are followed in India for interfacing PV generator to Grid. The PV Inverter should operate in stable mode within the standards specified by IEC. In this paper voltage fluctuations occur in PV system are studied in the z-source inverter model and THD analysis of each case is compared. The paper also consists of two different shoot through pulse generation techniques and an efficient control strategy is proposed to the single phase grid connected z-source inverter.
Keywords: Photovoltaic (PV) cell, Z-source inverter, Boost Factor, Irradiance, Maximum Boost Z-source Inverter, Maximum Power Point Tracking (MPPT), Total Harmonic Distortion (THD)
Keywords: Photovoltaic (PV) cell, Z-source inverter, Boost Factor, Irradiance, Maximum Boost Z-source Inverter, Maximum Power Point Tracking (MPPT), Total Harmonic Distortion (THD)
Abstract
Design and Simulation of Efficient DC-DC Converter Topology for a Solar PV Modular Integrated Converter System
SAJIN M, SNEHA EVS, KAMALA DEVI V
Abstract: Modulated Integrated Converter systems are considered to be the new and global turning point in the field of Solar PV systems. These converters are highly recognised for its modular size and compact nature and they are supposed to be attached directly with each PV module and since one PV module is having the power rating of a few watts ranging from 0-500Ws, the design rating would be in the same range and thus the most vital condition in such a design is efficiency under these relatively low loads. In this paper an isolated interleaved boost converter topology is considered in the DC-DC section and which is designed and simulated for a specific power rating (250W) and the efficiency is analysed with varying load conditions and compared with the target efficiency of the system.
Keywords: Interleaved Isolated Boost Converter, Modular Integrated Converters (MIC), DC-DC Converters, MPPT
Keywords: Interleaved Isolated Boost Converter, Modular Integrated Converters (MIC), DC-DC Converters, MPPT
Abstract
An Efficient Closed Loop Controlled Bridgeless Cuk Rectifier for Pfc Applications
SHALINI.K, MURTHY.B
Abstract: This paper presents the digital simulation of single phase AC-DC Bridgeless Cuk for Power Factor Correction (PFC) rectifiers. A conventional Cuk PFC rectifier suffers from high conduction losses due to presence of input rectifier bridges. Higher efficiency can be achieved by using the bridgeless Cuk topology. The conduction losses are considerably reduced due to the absence of input diode bridge and availability of only two semiconductor devices in the current flowing path during each switching cycle. By operating the improved topology in discontinuous conduction mode (DCM), it ensures unity power factor and low total harmonic distortion (THD). A closed loop controlled bridgeless Cuk PFC converter is modelled and simulated.
Keywords: Bridgeless rectifier, Cuk topology, Discontinuous Conduction Mode (DCM), low conduction losses, Power Factor Correction (PFC) rectifier, total harmonic distortion(THD).
Keywords: Bridgeless rectifier, Cuk topology, Discontinuous Conduction Mode (DCM), low conduction losses, Power Factor Correction (PFC) rectifier, total harmonic distortion(THD).
Abstract
Modeling And Analysis of PV Micro-Inverter
GIBI PAUL, KANNAN S.A, NEETHU JOHNSON, JUSTIN GEORGE
Abstract: Solar energy based micro-inverters are becoming more popular. Each solar panel in a system has its own low power inverter, its possibility to shading and PV cell malfunction is less. The micro-inverter is the integration of inverter and PV module in one electrical device. Micro-inverters convert the DC power from one PV module (solar panel) to the AC grid, and are designed for an output power in the range of 180W to 300W. A single stage photovoltaic (PV) micro-inverter is presented in this paper for single phase configuration. The proposed micro-inverter uses a forward converter at the input in a diagonal topology having only two power switches. It generates a large output voltage compared to the input from the PV panel. Sinusoidal PWM is used to control the two input switches. This topology has the advantages like: (1)very simple architecture. (2) Only two switches are used for switching and control of the inverter. Matlab /Simulink is used for software implementation.
Keywords: PV Micro-inverter, Solar cell, Maximum power point tracking
Keywords: PV Micro-inverter, Solar cell, Maximum power point tracking
Abstract
Comparison of PI and Adaptive Fuzzy PID Controllers for Speed Control of BLDC Motor
LAKSHMI MOHAN
Abstract: Brushless DC (BLDC) motors are commonly used in applications that require high reliability, high efficiency and high power-to-volume ratio such as industrial automations, manufacturing, robotics and aerospace. The speed of a brushless dc motor can be controlled in a closed loop by measuring the actual speed of the motor.PI (Proportional Integral), PID (Proportional Integral Derivative) and fuzzy controllers are commonly used for the speed control. This paper compares the speed responses of a brushless dc motor obtained with the adaptive fuzzy PID controller and conventional PI controller. The adaptive fuzzy PID controller proposed in the system is a parallel combination of two controllers- fuzzy PD controller and a fuzzy PI controller. Switching action take place between the two controllers based on the speed error signal received. MATLAB/Simulink is used for the simulation. Various control system parameters such as steady state error, rise time, peak overshoot, recovery time and settling time for both the controllers are analysed and compared.
Keywords: Brushless DC Motor (BLDC), PI Controller, Adaptive fuzzy, speed control, PWM inverter.
Keywords: Brushless DC Motor (BLDC), PI Controller, Adaptive fuzzy, speed control, PWM inverter.
Abstract
Bidirectional Isolated Dc-Dc Converter for Fuel Cells and Supercapacitors Hybrid System
PREETHI PETER
Abstract: In future, electrical power systems for electrical vehicles may employ hybrid energy sources, such as fuel cells and super capacitors. The fuel cells (FCs) and super capacitors (SCs) as an environmentally renewable energy system has been applied in many such fields, as hybrid electric vehicle and uninterruptible power supply (UPS) systems. The available power generated from a fuel cell (FC) may not be sufficient to meet sustained load demands, mainly during peak demand or transient conditions. During these conditions, supercapacitor (SC) bank can supply a large amount of power. The combined use of FC and SC has the potential for better energy efficiency, reducing the cost of FC technology, and improved fuel usage. Here, a bidirectional isolated dcâdc converter for fuel cells and the supercapacitor hybrid energy system is being controlled by phase-shift angle and duty cycle method. The dc-dc converter acts as a multiport device. The converter has three modes of operation (1) Boost mode (2) SC power mode (3) SC recharge mode. All switches are controlled by phase shifted PWM signals with a variable duty cycle. Zero voltage switching (ZVS) is achieved by the parasitic capacitance of the switches. For the simulation, MATLAB/Simulink is used. Here the operation principle of the proposed converter is being described and the waveforms for various stages of operation are analyzed.
Keywords: Bidirectional dcâdc converter, fuel cell, supercapacitor.
Keywords: Bidirectional dcâdc converter, fuel cell, supercapacitor.
Abstract
An Efficient Bridgeless PFC Cuk Converter Based PMBLDCM Drive
JOMY JOY, AMAL M.R, RAKESH R, KANNAN S.A, ANNA RAINA
Abstract: A new bridgeless Cuk PFC converter driving a permanent magnet brushless DC motor drive is proposed here. In the case of a conventional BLDCM drive system there will be a rectifier and a PFC converter connected to the drive through a voltage source inverter. In this project it is replaced by a bridgeless PFC Cuk converter and the voltage source inverter connected to the PMBLDCMD. This improves the efficiency of the drive as well as maintains a unity power factor. This is because of the bridgeless topology introduced which does not have an input diode bridge rectifier. That is there will be less number of semiconductor switches in the current flowing path. The bridgeless Cuk converter is designed to work in discontinuous conduction mode. The proposed PMBLDM drive is designed with necessary controls and modeled in MATLAB Simulink and simulated results are presented. Also a comparison is made between proposed drive system and the conventional Cuk rectifier fed PMBLDCM drive.
Keywords: Cuk converter, Power factor correction (PFC), Bridgeless Cuk converter, low conduction losses, total harmonic distortion, permanent magnet brushless DC motor (PMBLDCM).
Keywords: Cuk converter, Power factor correction (PFC), Bridgeless Cuk converter, low conduction losses, total harmonic distortion, permanent magnet brushless DC motor (PMBLDCM).
Abstract
Modelling and Analysis of MPPT Techniques for Grid Connected PV Systems
RAKESH R, KANNAN S A, JOMY JOY, KAMALA DEVI V, PROF.(DR). JAYARAJU M
Abstract: This paper evaluates the most commonly used MPPT techniques and finds which MPPT technique is most suitable for grid connected systems. This paper presents the modelling of a Photovoltaic cell, dc to dc converter, and simulation study of a grid connected PV system. In this paper a new discrete time integral incremental conductance algorithm is proposed. Using mat lab/Simulink platform results are verified.
Keywords: Maximum Power Point Tracking (MPPT), Perturb and Observe algorithm (P&O), Incremental Conductance(IC), Fuzzy logic, Photovoltaic (PV).
Keywords: Maximum Power Point Tracking (MPPT), Perturb and Observe algorithm (P&O), Incremental Conductance(IC), Fuzzy logic, Photovoltaic (PV).
Abstract
Fractional N-Phase Locked Loop using VLSI Technology
CHAITALI P.CHARJAN, ASSO. PROF. ATUL S.JOSHI
Abstract: Literature survey of Phase Locked Loop reflects that many researchers have applied different techniques like digital and analog simulation by applying mathematical/logical relations to design the Phase Locked Loop (PLL) . Researchers have undertaken different systems, processes or phenomena with regard to design and attempted to find the unknown parameters and analyzed PLL. Since in the real world today VLSI/CMOS is in very much in demand, it is observed that very few researchers have undertaken the work for designing PLL using CMOS/VLSI technology, ,after the careful study of reported work. In the proposed work, low power PLL with multiple outputs is designed with stability of system and there are no fractional spurs in the output spectrum of the fractional-N phase locked loop.
Keywords: Phase Locked Loop; Sigma-Delta modulation; Frequency Synthesizer; Fractional-N; Phase Noise
Keywords: Phase Locked Loop; Sigma-Delta modulation; Frequency Synthesizer; Fractional-N; Phase Noise
Abstract
Space Vector Modulation Based ZSCC Reduction between Parallel Inverters and Motor Control
NAVADEEP.S, MR.R.KARTHIK
Abstract: The Space vector Modulation (SVM) is most appropriate modulation technique used for power converters/inverters among the various Pulse Width Modulation (PWM) techniques. SVM plays major role in the reduction of Total Harmonic Distortion (THD) due to rapid switching inherent and it is well suitable for motor applications rather than other PWM techniques. Harmonics is one of the major drawbacks in most of the application. SVM has the major advantage is that complementary operation of switches takes place in a leg that is only one switching device is made to turn on at a particular period. The proposed model has the effect of eliminating the lower order harmonics using SVM technique and the effect of Zero Sequence Circulating Current (ZSCC) when inverters are connected in parallel. MATLAB/Simulink is used develop the model. Results that were obtained from the simulation confirmed the performance and effectiveness of proposed method.
Keywords: Space Vector Modulation, Inverters, Harmonic elimination, Pulse Width Modulation, Zero Sequence Circulating Current
Keywords: Space Vector Modulation, Inverters, Harmonic elimination, Pulse Width Modulation, Zero Sequence Circulating Current
Abstract
A New Nine Level Inverter with Reverse Voltage Topology
PRASI THA PRAKASH
Abstract: Multilevel inverters have drawn tremendous interest in high power and high voltage application. Multilevel inverters have unique structure which makes it possible to reach high voltages with less harmonic content. The harmonic content of the output voltage waveform decreases as the number of output voltage increases. The main advantages are lower Total Harmonic Distortion (THD), less stress on the power switches and higher efficiency. The main disadvantage is the high number of power switches which makes the control method complex and hence high cost. This paper presents a nine level inverter using reverse voltage topology. This topology requires less power switches compared to conventional multilevel inverter and less carrier signals and gate drives. The proposed topology and its control method are explained and detailed simulation has been carried out in MATLAB/Simulink.
Keywords: Multilevel inverter, power electronics, Phase Disposition SPWM, Reverse voltage topology.
Keywords: Multilevel inverter, power electronics, Phase Disposition SPWM, Reverse voltage topology.
Abstract
Multiport Converter Topology for Hybrid System Using PI Controllers
MS RESHMI RAVI K, MRS RENU JOSE
Abstract: Renewable energy sources such as Fuel-Cells, Photo-Voltaic (PV) arrays are increasingly using in automobiles, residential and commercial buildings. For stand-alone systems energy storage devices are required for backup power and fast dynamic response. A power electronic converter interfaces the sources with the load along with energy storage. Existing converters for such applications use a common dc-link, which employ multiple converters. Proposed system in this paper is a systematic method for deriving three-port converters (TPCs) from the full-bridge converter (FBC). The three port converter features single stage conversion between any two of the three ports, higher system efficiency, fewer components, faster response and compact packaging. The proposed FB-TPC consists of two bidirectional ports and an isolated output port. The primary circuit of the converter functions as a buck-boost converter and provides a power flow path between the ports on the primary side. The FB-TPC can adapt to a wide source voltage range. Here MATLAB using Simulink and SimPower System set toolboxes is used for software implementation.
Keywords: Photo-Voltaic (PV), Boost-buck, dc-dc converter, full-bridge converter (FBC), renewable power system, three- port converter (TPC)
Keywords: Photo-Voltaic (PV), Boost-buck, dc-dc converter, full-bridge converter (FBC), renewable power system, three- port converter (TPC)
Abstract
High Voltage DC â DC Converter for Line Type Modulator used in Radar Transmitters
AMAL M R, KANNAN S A, RAKESH R, JOMY JOY, MANGALA DEVI K T
Abstract: This paper proposes a high voltage power supply for line type modulator using forward converter. Modulator is the important part of radar transmitter and it requires a high voltage power supply. A DC- DC converter is designed to drive the modulator. Forward converter topology is used to convert a 28V input to 175V output. The proposed topology is more advantageous compared to other simple converter topologies.
Keywords: DC power conversion, Forward converter, Line type modulator, switched mode power supply, PFN.
Keywords: DC power conversion, Forward converter, Line type modulator, switched mode power supply, PFN.
Abstract
Simulation of Micro Inverter with High Efficiency High Step Up Dc-Dc Converter
J.DHEESHA, MURTHY.B
Abstract: An alternative solution in PV generation systems is the grid connected AC module. PV panel and micro inverter connected to the grid forms this combination. The power processing interface between the PV source and the electrical grid is high step-up converter and DC-AC inverter. The energy injected to the grid depends on the efficient conversion of high step-up converter and efficient inversion by the DC-AC inverter. The proposed configuration boosts the low array voltage by tracking maximum power from the PV array and converts the high DC power to high quality AC, feeding it to the grid. In this paper a ZETA converter with coupled inductor is used to efficiently recycle the leakage inductor energy. Further the overall safety to the system is enhanced since the PV array appears as an floating source. A discussion about the operating principle, steady state analysis, stress on active components of converter are done in this paper. All the simulation results are presented that verify the maximum PV energy is injected into the grid.
Keywords: Micro inverter, coupled-inductor, ZETA converter, High Efficiency.
Keywords: Micro inverter, coupled-inductor, ZETA converter, High Efficiency.
Abstract
An Investigation of new combination of PIN diode for RF Microwave Switch
AMIT KUMAR, NIVEDITA BISHT
Abstract: This paper presents a new combination of PIN diode switch for low insertion loss and high isolation. The combination is designed for frequency 0.1 to 10 GHz. In new combination we connect the two series-shunt combination one is across the input port and the other one is across the output port with one shunt diode connect between two Îģ/4 micro strip line. It has been concluded that in new combination the isolation increase and insertion loss decrease as compare to the previous combinations designed. In previous combinations we get â25db isolation, but the new combination give the isolation â 76db which is much better compare to previous isolation.
Keywords: PIN Diode EM Simulation, insertion loss, isolation.
Keywords: PIN Diode EM Simulation, insertion loss, isolation.
Abstract
Modeling of Solar Power Based Quasi-Z-Source Inverter to Supply BLDC Motor
NEETHU JOHNSON, KANNAN S.A, GIBI PAUL, JUBY JOSE, JUSTIN GEORGE
Abstract: In the present world, conventional sources of energy are depleting at a faster rate because of its increased consumption. Renewable sources of energy are the better alternatives for this problem and among this solar energy is the best solution. Among the various PV (photovoltaic) applications, water pumping system using solar energy is growing in interest in isolated areas, where grid availability is difficult. The water pumping system can be driven by DC or AC motor but Brushless DC Motor (BLDCM) which has higher efficiency, lower power range, and simple structure; hence BLDCM is the best option for this application. The conventional PV water pumping system uses two conversion stages; however this problem can be eliminated by quasi-Z-source inverter (qZSI). The qZSI utilizes an LC network and uses shoot-through states, thus reduces the number of power switches, switching losses and cost. An MPPT (Maximum Power Point Tracking) can be controlled to extract the maximum power from PV array. The water pumping system using PV array, MPPT, qZSI and BLDC motor are modeled in Matlab/Simulink.
Keywords: Photovoltaic (PV) array, Maximum Power Point Tracking (MPPT), quasi-Z-source inverter (qZSI), Brushless DC Motor (BLDCM).
Keywords: Photovoltaic (PV) array, Maximum Power Point Tracking (MPPT), quasi-Z-source inverter (qZSI), Brushless DC Motor (BLDCM).
Abstract
A Study on Speaker Recognition System and Pattern classification Techniques
DR E.CHANDRA, K.MANIKANDAN, M.S.KALAIVANI
Abstract: Speaker Recognition is the process of identifying a person through his/her voice signals or speech waves. Pattern classification plays a vital role in speaker recognition. Pattern classification is the process of grouping the patterns, which are sharing the same set of properties. This paper deals with speaker recognition system and over view of Pattern classification techniques DTW, GMM and SVM.
Keywords: Speaker Recognition System, Dynamic Time Warping (DTW), Gaussian Mixture Model (GMM), Support Vector Machine (SVM).
Keywords: Speaker Recognition System, Dynamic Time Warping (DTW), Gaussian Mixture Model (GMM), Support Vector Machine (SVM).
Abstract
Smart Gas Cylinder Using Embedded System
K.PADMA PRIYA, M.SUREKHA, R.PREETHI, T.DEVIKA, N.DHIVYA
Abstract: The design of a wireless LPG leakage monitoring system is proposed for home safety. This system detects the leakage of the LPG and alerts the consumer about the leak by SMS and as an emergency measure the system will turnoff the power supply, while activating the alarm. The additional advantage of the system is that it continuously monitors the level of the LPG present in the cylinder using load sensor and if the gas level reaches below the threshold limit of gas around 2kg so that the user can replace the old cylinder with new in time and automatically books the cylinder using a GSM module .The device ensures safety and prevents suffocation and explosion due to gas leakage. This project is implemented using ARM 7 processor and simulated using keil software.
Keywords: LPG, gas cylinder monitoring, gas leakage detection and prevention, GSM, Alarm
Keywords: LPG, gas cylinder monitoring, gas leakage detection and prevention, GSM, Alarm
Abstract
Performance Evaluation of Table Driven Multipath Routing Protocols in MANET under varying Nodes, Traffic load & Pause time
ROHIT JAIN, RAMPRASAD KUMAWAT, SANDEEP MANDLIYA, MUKESH PATIDAR
Abstract: Routing in ad hoc networks is somewhat more complex than routing in regular wired networks. Unreliable links and (possibly) rapid changes in topology calls for customized routing protocols. This essay aims to discuss two such protocols, namely MPOLSR and MDART The common belief is that the same is true for ad hoc networks, i.e., multi-path routing balances the load significantly better than single-path routing. Our Protocol, called MPOLSR & MDART is a multipath routing protocol for MANET. In addition route recovery & loop detection are implemented in MPOLSR in order to improve quality of service regarding OLSR.MP-OLSR is suitable for mobile, large & dense network with large traffic & could satisfy critical multimedia applications with high on time constraints. While MDART is an efficient protocol which gives improved performance in large networks. MDART is an enhancement of shortest path routing protocol known as Dynamic Address Routing (DART).MDART discovers and stores multiple paths to the destination in the routing table. In this paper, we have compare and analysis the performance of Table driven multipath routing protocols in MANET under different scenarios & metrics using NS-2.
Keywords: MANET, MRP, MPOLSR, MDART, NS-2 etc.
Keywords: MANET, MRP, MPOLSR, MDART, NS-2 etc.
Abstract
Design Approach towards High Performance Memory of 6 Transistors SRAM Cell Using 45nm CMOS Technology
NUPUR G.NANOTI, PRAFULLA D.GAWANDE
Abstract: Semiconductor memory arrays capable of storing large quantities of digital information are essential to all digital systems. The amount of memory required in a particular system depends on the type of application, but, in general, the number of transistors utilized for the information (data) storage function is much larger than the number of transistors used in logic operations and for other purposes. The ever-increasing demand for larger data storage capacity has driven the fabrication technology and memory development towards more compact design rules and, consequently, toward higher data storage densities. The trend towards higher memory density and larger storage capacity will continue to push the leading edge of digital system design. The Microwind 3.1 software will allow designing and simulating an integrated circuit at physical description level. The main novelties related to the 45 nm technology are the high-k gate oxide, metal gate and very low-k interconnect dielectric. The effective gate length required for 45 nm technology is 25nm. Low Power (0.211mwatt), high speed static RAM area efficient chip is designed using 45 nm CMOS technology.
Keywords: 6T Static RAM cell, memory, 45nm VLSI technology, low power.
Keywords: 6T Static RAM cell, memory, 45nm VLSI technology, low power.
Abstract
Segmenting Web Pages Using Correlation Clustering And Reducing Noisy Data Using Simple K-Mean Algorithm
RAJDEEPA B, PREMAVATHI M
Abstract: The World Wide Web is most important facet in every part of the world. All areas in IT and other industries run using this WWW which contains large amount of data. The World Wide Web includes more and more websites each containing large data and it is highly demanded. Web pages are the useful aspect for retrieving required data from internet but problem in web page data retrieval is, it sometimes contains irrelevant data. This article is intended to retrieve the relevant data by segmenting web pages and removing noise in segmented web pages via K-means Algorithm in clustering.
Keywords: Vision-Based Web page Content Structure Analysis, Correlation Clustering, Clustering, K-Mean Algorithm.
Keywords: Vision-Based Web page Content Structure Analysis, Correlation Clustering, Clustering, K-Mean Algorithm.
Abstract
Gujarati Character Identification A Survey
MITUL MODI, FEDRIK MACWAN, RAVINDRA PRAJAPATI
Abstract: English Character Recognition techniques have been studied extensively in the last two decades and it gain unbelievable high progress and success ratio. But for regional languages these are still emerging and their success ratio is very poor. In Gujarat, there are thousands of people who can speak, write and understand only Gujarati language. Rapid growing computation may increase Indian CR methodology. Today the whole world is digitized. And heavy demand of digital documentation in any field like postal services, publishing house, automation, data entry, text entry and communication technology. Gujarati is mother tongue of Gujarat, spoken by thousands of people. There is less development in this area due to complexity in script. In this paper, we are presents different technique through which GOCR (Gujarati Optical Character Recognition) is possible.
Keywords: Gujarati Character Recognition, Segmentation, Feature Extraction, Image Classification, OCR
Keywords: Gujarati Character Recognition, Segmentation, Feature Extraction, Image Classification, OCR
Abstract
Arm Based Fishing Boat Security System
M.SUREKHA, R.PREETHI, K.PADMA PRIYA, T.DEVIKA, N.DIVYA
Abstract: In this research paper, the proposed concept is to safeguard the uneducated fisher men crossing the border and guides them to go in a right path and save their life. Our proposed idea helps in locating the Fishing boat using GPS system. This information is transmitted using wireless mode to the control system. Then by detecting the latitude and longitudinal location of the Fishing boat, the control system detects the present area of the Fishing boat and send command signal to the Fishing boat using wireless mode to guide the vehicle if the boat is out from the border. The GPS system is the latest technology which helps us in identifying the Fishing boat either inside or outside the border. The ZIGBEE technology also helps us to communicate from both the ends i.e., the control system and Fishing boat. Hence with the both improved technologies, it can be saved the human life from danger. GPS is used in this system to monitor the boat position anywhere in the sea. In other words, the GPS unit simply measures the travel time of the signals transmitted from the satellites, then multiplies them by the speed of light to determine exactly how far the unit is from every satellite its sampling. GPS receiver receives the boat position with the help of latitude and longitude from satellite through GPS antenna and sends the information to the microcontroller. Microcontroller displays the latitude and longitude on the LCD display. Then information signal is transmitted through ZIGBEE. Similarly the wind speed also calculated using anemometer. All the information related to the process is sent to the Microcontroller unit and the process takes place. Microcontroller is pre-programmed in such a way to undergo the process. Similarly tsunami alert is sent to the boat from the controller section through the ZIGBEE transmitter.
Keywords: ARM,GPS module, DC motor and ZIGBEE.
Keywords: ARM,GPS module, DC motor and ZIGBEE.
Abstract
Microcontroller Based Neural Network Controlled Low Cost Autonomous Vehicle
K.INDUJA, G.NHIVASHINI
Abstract: The hurdle distance is measured using four ultrasonic Sensors which is equipped in vehicle. A low cost P89V51RD2-NP microcontroller is used in which a GPS receiver, a GSM modem and a RAM memory is interfaced. A GPS receiver is used for receive the goal position information, a GSM modem is used for changing destination place on run time and data is stored in a non-volatile RAM. The information is acquired from the sensors which is processed by the microcontroller and it generates commands for robot motion based on neutral network. The neutral network is a multi layer Feed forward network in which back-propagation training algorithm is used.
Keywords: Autonomous vehicle; ultrasonic sensors; compas; GPS receiver; GSM modem; nonvolatile RAM; tangent- sigmoid function approximation; neural network; microcontroller implementation
Keywords: Autonomous vehicle; ultrasonic sensors; compas; GPS receiver; GSM modem; nonvolatile RAM; tangent- sigmoid function approximation; neural network; microcontroller implementation