VOLUME 7, ISSUE 11, NOVEMBER 2019

Abstract: Microbial fuel cell is a kind of promising new source of green energy. Because of its complicated reaction mechanism and its inherent characteristics of time-varying, uncertainty, strong-coupling and nonlinearity, there are complex control challenges in modelling and control of microbial fuel cells. This paper studies on performance improvement of microbial fuel cells by the approach of model predictive control. A numerical simulation platform for microbial fuel cell is established, and a traditional model predictive controller is designed for MFC first; then model predictive controllers which use Laguerre function and exponential data weighting are designed subsequently to compare with the traditional model predictive controller. Simulation results show that the proposed improved model predictive controller modified by exponential data weighting can give the system both good steady-state behaviour and satisfactory dynamic property.

Keywords: Microbial fuel cell; Model predictive control; Exponential data weighting; Constant voltage transmission

Abstract: Hybrid renewable energy generation systems focusing on energy sustainability and its utilization using solar PV, wind and biogas energy sources. A hybrid energy system, consists of two or more renewable energy sources used together to generate the power. The hybrid renewable energy sources consist of different sources, such as Solar PV(Photovoltaic), wind, biomass, geothermal and tides, ocean waves etc. which are used to generate power. This electrical power can utilize for various purpose. Environmentally friendly power generation technologies will play an important role in future for generation of power. The important challenges in the design and energy utilization of hybrid energy systems.

Keywords: Hybrid, PV photovoltaic, Environmental, Power Generation

Abstract: Automatic solar power irrigation system, an advanced form of solar irrigation system consists of an automatic control to ON and OFF the control valves which aids the farmers by governing the supply of water to the irrigation lands. It also sustains the moisture level of soil that results in better yield. This proposed system employs soil sensor to detect the water quantity present in agricultural field. This system is based on Audrino, and aims at reducing the water usage. In regular practice, Watering of crops is the most significant practice and arduous task. Irrespective of the climatic conditions, the proposed system would be able to control the water that reaches the farm plants. This system could be effectively used to water the plants based on the demand. Installation of automatic plant watering system requires combination of sprinkler systems, pipes and nozzles.

Keywords: Solar Panel, Sensors, gardening setup, Arduino

Abstract: An infant warmer-incubator constructed to provide a controlled air environment about the infant. The incubator maintains the proper environment in an "open" or "closed" position and will permit resuscitation, technical procedures, surgery or routine nursing care of the infant as with a crib or bassinet. In the "closed" position some nursing care may be performed while in the open position it may serve as an operating table and not materially disturb the controlled environment for the infant. The presently known and now utilized infant warmers and incubators fail to meet the demand for careful treatment and care of the premature infant. To date, there is not an incubator operating table available to the medical profession. The procedure now used is to heat the whole operating room for premature infant surgery. There is not in existence a closed incubator system which accurately maintains an environment of desired temperature, humidity, and weight of the infant since they require circulation and thus consistency is hard to achieve. The proposed system is used to overcome the disadvantages of existing warmer system and provide safety to the infant. The main objective of this project is to control the humidity and temperature parameters of warmer based upon IOT. To convert the mode of acquiring information regarding the measured temperature through android application. This system will be used to control the multiple warmer at the same time and also reduce the man power.

Keywords: Microcontroller, Humidity sensor, Arduino, IOT

Abstract: Residual current circuit breaker is the necessary element in a wiring system to protect an individual from electrocution and from the risk of electric shock. The speed of operation and reliability is the most important part of circuit breaker design. Limitations of mechanical circuit breakers used in domestic as well as industrial applications led to the development of solid-state circuit breakers. Solid state circuit breakers use solid state devices for switching and isolation. The response of solid-state circuit breaker to a fault is very quick. In the case of an earth fault, the response of circuit breaker to a fault is very important because the fast acting of circuit breaker may save a life from electrocution. In this paper a microcontroller based static residual current circuit breaker using thyristor is proposed which offers protection from earth faults and leakage currents. After a brief introduction and presentation, the design of microcontroller based static residual current circuit breaker is described.

Keywords: Core Balanced Current Transformer; Microcontroller; Solid State Circuit Breakers

Abstract: The objective of Digital Subscriber Line (DSL) is to propagate signal from the transmitter to the receiver over telephone lines. In communication industry Asymmetric Digital Subscriber Line (ADSL) is widely used because it can handle both phone services and internet access services at same time. As the communication industry develops, its main concern is to maximize the user handling capacity of communication systems. For this purpose, ADSL uses Discrete Multitone (DMT) modulator with QAM bank. But as the number of users increases the system complexity and interference also increases. The communication channel is not free from the effects of channel impairments such as noise, interference and fading. These channel impairments caused signal distortion and Signal to Ratio (SNR) degradation. One method that can be implemented to overcome this problem is by introducing channel coding. Channel encoding is applied by adding redundant bits to the transmitted data. The redundant bits increase raw data used in the link and therefore, increase the bandwidth requirement. So, if noise or fading occurred in the channel, some data may still be recovered at the receiver. While at the receiver, channel decoding is used to detect or correct errors that are introduced to the channel.

Keywords: DSL, ADSL, DMT, BER