PI Controller Optimization for Indirect Current Control for Single-Phase Shunt Active Filter
Keywords:
Single phase shunt active filter,, Indirect current control,, PI(Proportional- Integral),, GA(Genetic Algorithms)Abstract
The conventional current control of shunt active filters deals with the design of controller in order to track harmonic reference currents with the lowest possible error. An indirect current control appears to be an alternative approach for active filter control. This method focuses on the control of reference source current rather than harmonic current. As a result, a simple Proportional–integral (PI) controller can be used in the control design which is one of the main benefits. However, to obtain suitable controller parameter they require considerable design effort. In this paper, a new design of PI controller for indirect current control for a single-phase shunt active filter has been proposed. Optimized controller parameters are obtained through the use of Genetic Algorithms (GA). Reference source current is derived based on a single-phase synchronous d-q reference frame. Simulation results are presented to validate the proposed design method.
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