Application of wavelet-based active power filter in accelerator magnet power supply

GUO Xiao-Ling; CHENG Jian

doi:10.1088/1674-1137/38/11/117007

Chinese Physics C> 2014, Vol. 38> Issue(11) : 117007 DOI: 10.1088/1674-1137/38/11/117007

Application of wavelet-based active power filter in accelerator magnet power supply

GUO Xiao-Ling ^, ,
CHENG Jian ^,

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Abstract：
Since modern accelerators demand excellent stability to magnet power supply (PS), it is necessary to decrease harmonic currents passing magnets. Aiming at depressing the rappel current from the PS in the Beijing electron-positron collider Ⅱ, a wavelet-based active power filter (APF) is proposed in this paper. An APF is an effective device to improve the quality of currents. As a countermeasure to these harmonic currents, the APF circuit generates a harmonic current, countervailing harmonic current from PS. An active power filter based on wavelet transformation is proposed. Discrete wavelet transformation is used to analyze the harmonic components in the supply current, and an active power filter circuit works according to the analysis results. Our simulation and experiment results are given to prove the effect of the APF.

References

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Habrouk M E, Darwish M K, Metha P. IEE Proceedings-Electric Power Applications, 2000, 147(5): 403-413[2] Mallat S. IEEE Trans. on Pattern Anal. Machine Entell., 1989, 11: 674-693[3] ZHANG Xiang-Cheng, TENG Zhao-Sheng. The Application of Wavelet Theory in Power Harmonics Detecting, Instrument and Meter User, 2004, 11(2): 1031-1036

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GUO Xiao-Ling and CHENG Jian. Application of wavelet-based active power filter in accelerator magnet power supply[J]. Chinese Physics C, 2014, 38(11): 117007. doi: 10.1088/1674-1137/38/11/117007

GUO Xiao-Ling and CHENG Jian. Application of wavelet-based active power filter in accelerator magnet power supply[J]. Chinese Physics C, 2014, 38(11): 117007. doi: 10.1088/1674-1137/38/11/117007 shu

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Received: 2013-12-20
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Application of wavelet-based active power filter in accelerator magnet power supply

GUO Xiao-Ling ^,
CHENG Jian ^,

Corresponding author: GUO Xiao-Ling,

Corresponding author: CHENG Jian,

Received Date: 2013-12-20
Accepted Date: 1900-01-01
Available Online: 2014-11-05

Abstract: Since modern accelerators demand excellent stability to magnet power supply (PS), it is necessary to decrease harmonic currents passing magnets. Aiming at depressing the rappel current from the PS in the Beijing electron-positron collider Ⅱ, a wavelet-based active power filter (APF) is proposed in this paper. An APF is an effective device to improve the quality of currents. As a countermeasure to these harmonic currents, the APF circuit generates a harmonic current, countervailing harmonic current from PS. An active power filter based on wavelet transformation is proposed. Discrete wavelet transformation is used to analyze the harmonic components in the supply current, and an active power filter circuit works according to the analysis results. Our simulation and experiment results are given to prove the effect of the APF.