Application of Direct Current Control in a Three-phase Parallel Active Power Filter
نویسندگان
چکیده
The paper presents application of a direct current control (DCC) method in a three-phase parallel active power filter. The shunt active power filter is employed to compensate the fundamental reactive power and harmonic distortion of non-linear loads. Due to its inverter-like topology with known parameters in the filter branch, the predictive DCC method was implemented to reduce the filter commutation frequency. Consequently, the filter branch losses are decreased. Experimental setup based on a TMS320F2407A DSP showed that the DCC variant without modulation within the sampling interval yields even better results than the DCC variant, which modulates the active and zero voltage vectors within the sampling interval. A comparison between the DCC and the synchronized on-off control method indicates that the DCC improves the filter performance.
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