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http://dx.doi.org/10.5370/JEET.2015.10.3.1311

Versatile Shunt Hybrid Power Filter to Simultaneously Compensate Harmonic Currents and Reactive Power  

Trinh, Quoc-Nam (Energy Research Institute, Nanyang Technological University)
Lee, Hong-Hee (School of Electrical Engineering, University of Ulsan)
Publication Information
Journal of Electrical Engineering and Technology / v.10, no.3, 2015 , pp. 1311-1318 More about this Journal
Abstract
This paper introduces a novel topology and an effective control strategy for a shunt hybrid power filter (SHPF) to simultaneously compensate harmonic currents and reactive power. The proposed SHPF topology is composed of an LC passive filter tuned to the 7th harmonic frequency and a small-rated active filter connected in parallel with the inductor Lpf of the LC passive filter. Together with the SHPF topology, we also propose a control strategy, which consists of a proportional-integral (PI) controller for DC-link voltage regulation and a PI plus repetitive current controller, in order to compensate both the harmonic current and the reactive power without the need for additional hardware. Thanks to the effectiveness of the proposed control scheme, the supply current is sufficiently compensated to be sinusoidal and in-phase with the supply voltage, regardless of the distorted and phase lagging of the load current. The effectiveness of the proposed SHPF topology and control strategy is verified by simulated and experimental results.
Keywords
Hybrid shunt power filter; Harmonic current; Reactive power;
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Times Cited By KSCI : 6  (Citation Analysis)
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