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| A Phase-Locked Loop Method for Three-Phase PWM Rectifier Based on Virtual Reactive Power |
| Jiang Liandian1, 2, Zhang Ming1, 2, Zhuang Ge1, 2, Yu Kexun1, 2 |
| 1. State Key laboratory of Advanced Electromagnetic Engineering and Technology Wuhan 430074 China 2. Huazhong University of Science and Technology Wuhan 430074 China |
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Abstract The phase-locked loop (PLL) plays a vital role in the three-phase voltage source PWM rectifier. This paper proposes a PLL based on the virtual reactive power for three-phase PWM rectifier, using the T/4 (T: the period of three-phase voltage)delay method eliminating the negative sequence and zero sequence component under unbalanced utility, abstrocting the positive sequence component, which implements phase locked through eliminating the virtual reactive power. The phase-locked loop method and the method for abstracting positive sequence component under unbalanced utility are analyzed, A model of three-phase voltage source PWM rectifier which is controlled by TMS320F2812 DSP, is built. Experimental results verify the PLL is feasible and has good performance under unbalanced utility.
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Received: 04 January 2012
Published: 25 March 2014
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[1] Roland E Best. 锁相环设计、仿真与应用[M]. 5版. 李永明, 王海永, 译. 北京: 清华大学出版社, 2007.
[2] 龚锦霞, 解大, 张延迟. 三相数字锁相环的原理及性能[J]. 电工技术学报, 2009, 24(10): 94-99.
[3] 廖慧, 饶明辉, 丘水生, 等. 市电畸变情况下三相UPS的一种锁相方法[J]. 电力电子技术, 2009, 42(8): 49-51.
[4] Rakesh Kumar Sinha, Partha Sarathi Sensarma. Improved PLL utility under distorted conditions[J]. IEEE, 2006: 1849-1854.
[5] 张学广, 徐殿国, 李伟伟. 一种适用于电网不平衡故障情况的数字锁相环[J]. 电力系统, 2009, 28(6): 54-57.
[6] 吉正华, 韦芬卿, 杨海英. 基于dq变换的三相软件锁相环设计[J]. 电力自动化设备, 2011, 31(4): 104-106.
[7] 何鸣明. 不对称电网故障下PWM整流器的控制策略的研究[D]. 杭州: 浙江大学电气工程学院, 2006.
[8] Pascal R, Hetve P, Jean Paul L. Regulation of a PWM rectifier in the unbalanced network state using a generalized model[J]. IEEE Transactions on Power Electronics, 1996, 11(3): 495-502.
[9] Hui Liao, Yanfeng Chen. A novel phase locked- loop for three-phase UPS under distorted utility conditions[C]. Electric Information and Control Engineering, 2011: 1076-1080.
[10] 侯世英, 张诣. 基于新型数字锁相环的三相电压型PWM整流器[J]. 电源技术与应用, 2011, 37(3): 64-67.
[11] Pena R, Clare J C, Asher G M. Doubly fed induction generator using back-to-back PWM converters and its application to variable speed wind-energy generation [J]. IEEE Power Application, 1999, 143(3): 231-241. |
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2013, Vol. 28 
