Power Quality Enhancement Using a Novel Hybrid Active Power Filter Device Under Nonlinear Loads

Abstract:

Nonlinear loads generate a large amount of characteristic harmonics , deteriorate the power quality of power distribution systems in Advanced manufacturing enterprises. In this paper a novel hybrid active power filter is proposed which consists of a series thyristor switched filter (TSF) and small rated shunt active power filter(APF). TSF is tuned at fifth and seventh order harmonic frequencies. Consequently APF compensates for third and other order harmonics, unbalance current and reactive power. A new control method based on PHC strategy is presented for APF. The device has already got an application in one of the transformer substations of a automobile factory. It’s revealed that the proposed device can improve the power factor , reduce the harmonics injection and enhancement power quality of the power distribution systems.

• Periodical: Advanced Materials Research (Volumes 516-517)
• Pages: 1419-1424
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.516-517.1419
• Online since: May 2012
• Authors: Wei Jun Yun, Gang Yao, Li Dan Zhou, Chen Chen, Jun Min Pan
• Keywords: Active Power Filter (APF), Harmonics, Nonlinear Loads, Power Quality (PQ), Thyristor Switched Filter (TSF)

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