A Comprehensive Analysis on Shunt Active Power Filters for Power Quality Enhancement Using SRF Control Method
Keywords:
Shunt active power filter (SAPF), Instantaneous quadrature power theory (P-Q Theory), I-Cos ψ control algorithm, proportional-Integral (P-I) controllerAbstract
The primary demand of the modern-day energy networks is to cope up with the power quality demands of the power grid facilities, this can be achieved by designing the effective power filters which reduces voltage and current harmonics. The following article is a comparative study on Instantaneous quadrature power theory and proposed SRF control algorithm to derive the compensation currents of shunt active power filter (SAPF) which enhance the power condition of the system. In order to monitor the DC-link voltage a proportional–integral (PI) controller is preferred. By adopting MATLAB/Simulink platform the SAPF is designed for stable non-linear loads. The triggering pulses are generated by hysteresis current control technique to regulate the turn on and off of the voltage source inverter (VSI) switches. The simulation results demonstrate that the total harmonic distortion can be minimized relatively to a lower value by implementing the proposed current control algorithm.
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