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A coupled feedback and feedforward control strategy of the parallel hybrid power filter (HPF) is presented in the paper. It features a small sensitivity against a disturbed supply voltage system and enables us to set grid phase currents in the phase with respective voltages. The experimental data agree with theoretical expectations.
A control algorithm is proposed for a three-phase hybrid power filter constituted by a series active filter and a shunt passive filter. The control strategy is based on the dual formulation of the vectorial theory of electrical power, so that the voltage waveform injected by the active filter is able to compensate the reactive power, to eliminate harmonics of the load current and to balance asymmetrical...
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