Source Current Control Strategy of Active Power Filters for Unbalanced Load Compensation in Three-Phase Four-Wire Distribution Networks

Lei Wang; Xiaoqing Han; Runquan Meng; Chunguang Ren; Qi Wang; Baifu Zhang

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자료유형: 학술저널

저자정보: Lei Wang (Taiyuan University of Technology) Xiaoqing Han (Taiyuan University of Technology) Runquan Meng (Taiyuan University of Technology) Chunguang Ren (Taiyuan University of Technology) Qi Wang (Taiyuan University of Technology) Baifu Zhang (Taiyuan University of Technology)

저널정보: 전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.18 No.5

발행연도: 2018.9

수록면: 1,545 - 1,554 (10page)

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This paper proposes a modified control strategy to improve the performance of three-phase four-leg shunt active power filters (APFs) for the compensation of three phase unbalanced loads. Unbalanced current cannot be obtained accurately by a harmonic detector due to the lower frequency. The proposed control strategy eliminates conventional harmonic detectors by directly regulating the source current. Therefore, the computational complexity is greatly reduced and the performance of the APF is improved. A mathematic model has been developed based on the source currents. The corresponding controllers have been designed based on the sinusoidal internal model principle. The proposed control strategy can guarantee excellent compensation performance and stable operation after an extreme disturbance such as a short circuit fault. In addition, the proposed technique can selectively compensate specific harmonics. A 50kVA prototype APF is implemented in the laboratory to validate the feasibility and performance of the proposed control strategy.

#Active Power Filter (APF) #Source current control #Unbalanced load compensation

참고문헌 (32)

참고문헌 신청

V. B. Bhavaraju and Prasad N. Enjeti, “Analysis and design of an active power filter for balancing unbalanced loads,” IEEE Trans. Power Electron., Vol. 8, No. 4, pp. 640-647, Oct. 1993. H. Akagi, “New trends in active filters for power conditioning,” IEEE Trans. Ind. Appl., Vol. 32, No. 2, pp. 1312-1332, Nov./Dec. 1996. P. Verdelho and G. D. Marques, “An active power filter and unbalanced current compensator,” IEEE Trans. Ind. Electron., Vol. 44, No. 3, pp. 321-328, Jun. 1997. B. Singh, K. Al-Haddad, and A. Chandra, “A review of active filters for power quality improvement,” IEEE Trans. Ind. Electron., Vol. 46, No. 5, pp. 960-971, Oct. 1999. L. Asiminoaei, F. Blaabjerg, and S. Hansen, “Detection is key?Harmonic detection methods for active power filter applications,” IEEE Ind. Appl. Mag., Vol. 13, No. 4, pp. 22-33, Jul./Aug. 2007.

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