Mitigation of third-harmonic voltage for three-phase four-wire distribution system based on a series active filter for neutral conductor
✍ Scribed by Keiji Wada; Shigenori Inoue; Toshihisa Shimizu
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 987 KB
- Volume
- 150
- Category
- Article
- ISSN
- 0424-7760
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✦ Synopsis
Abstract
This paper proposes a series active filter for mitigation of the third‐harmonic voltage in a three‐phase four‐wire power distribution system in a building. The active filter which consists of a single‐phase inverter can suppress the harmonic voltage of the system. The active filter is characterized by acting not only as a capacitor but also as a resistor for the third‐harmonic components. A Hilbert transformer is applied to the controller of the active filter in order to realize accurate third‐harmonic detection on a single‐phase active filter. Measurement results of harmonic distortion of source voltage in a building is also shown in this paper. It is clarified in a simulation and experiment that the active filter can suppress the third‐harmonic voltage without increasing neutral conductor current. © 2004 Wiley Periodicals, Inc. Electr Eng Jpn, 150(1): 62–70, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.10379