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This paper describes the design and performance of a parallel hybrid active power filter integrated into a three-phase diode rectifier with a capacitive load. The hybrid filter is composed by a three-phase LC filter and a small rated active filter based on a three-phase voltage-source PWM converter. The passive filter is designed with focus on characteristic impedance, resonant frequency, influence...
Hybrid filters could restrain harmonic current in distribution power-line effectively and their compensation precision relies heavily on the design of current loop controllers. Since the reference and feedback signals of the current loop controller are composed by different harmonic components and the bandwidth of conventional proportional controller is limited, this controller cannot control the...
In this paper, a double closed loop current controller is proposed for Parallel Hybrid Active Power Filter (PHAPF) characterized by series connection of a three-phase single-tuned series resonance LC filter for the seventh harmonic frequency and a low voltage rating three-phase voltage source PWM inverter. The proposed controller is composed by a grid current feedback control and a 5th harmonic of...
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