Novel Control Strategy For Grid-Connected PV System With Reactive Power Compensation And MPPT Control

Abstract: A PV system connected to the network with the functionality of the reactive power compensation and harmonic is introduced in this paper. The output of the PV system varies due to changes in solar irradiance and climate conditions. PQ theory can be used to control the VSC, which is independent of the control of the maximum power point of the buck / boost dc / DC converter. Then the VSC is used to interact with the electric grid through the network. Increasingly, the use of static power converter and switching mode power consumption injected current harmonics and reactive power in the electrical system. It will be shown that the VSC can be controlled to compensate the harmonic current and supplying active and reactive power. The harmonic current is extracted by using the theory of PQ. According to this strategy of sunlight during the active system sends power to the grid and also compensates the reactive power of the load and compensate harmonics. If there is no sunlight, the inverters compensates the reactive power and harmonic load and greatly improve the power factor of the installation. The proposed control strategies validated using MATLAB Simulink system/ Simpower.

Keywords: Grid-connected PV system, Instantaneous reactive power theory, MPPT, Reactive power compensation, Power quality.