Implementation, Analysis and Comparison of different Control Strategies on RSC-MLC Integrated D-STATCOM

This paper includes analysis and comparison of different control strategies implemented on D-STATCOM (Distributed Static Synchronous Compensator) with RSC-MLC (Reduced Switch Count Multi-Level Converter) module. The conventional D-STATCOM DC link source is updated with the RSC-MLC module integrated with PVA (Photo Voltaic Array) for renewable power injection along with harmonic mitigation. The novel D-STATCOM is operated with different control structures proposed which are a) SRF theory (Synchronous Reference Frame) b) PQ (Active-Reactive Power) theory and performance of the device and the grid system is analyzed and compared. For this the test system is modeled in MATLAB Simulink environment with powergui toolbox for graphs generation with respect to time. For harmonic analysis FFT (Fast Fourier Transformation) analysis tool is used for determination of THD (Total Harmonic Distortion) of the voltages and currents of the system.