Dual mode operation and control of Fuzzy Logic Controller based Z-source Virtual Synchronous Generator in Solar PV System
Keywords:
Impedance-source inverter, virtual synchronous generator, photovoltaic (PV) systems, low voltage ride through, fuzzy logic controller.Abstract
In this research work, proposes a dual mode operation and control of fuzzy logic controller based Z-source virtual synchronous generator in grid connected solar PV system. In grid connected PV systems, maintaining voltage stability is difficult due to sag or swell conditions, grid synchronization and power factor issues. To overcome these drawbacks here introduced a novel fuzzy logic control topology.in this work tested the performance of proposed grid connected PV system under three conditions named normal operation, low voltage ride through (LVRT) and virtual synchronous generator (VSG). In the VSG topology PI controller is used to generate the reference currents. But by using of PI controllers will leads to low-speed response of the system. So, to overcome this issue, in the place of PI Controllers here introduced Fuzzy Logic Controllers. The proposed Fuzzy Logic Controllers will provide solutions to complex problems, robust, simple, and can be modified according to our requirements which will gives us accurate output.so, the speed response of the system will increase. The entire proposed system implemented and tested in MATLAB/SIMULINK.
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