基于星形接法的三相链式功率调节系统 直流母线电压平衡控制

摘要
图/表
参考文献
相关文章 (1)

全文: PDF (703 KB)
输出: BibTeX | EndNote (RIS)

摘要三相链式功率调节系统可用于电网的瞬态有功、无功调节。该系统有多组直流母线, 由于其直流母线上储电装置的性能不一致、以及负载参数不同, 将引起系统各个直流母线电压不等或不平衡, 从而影响系统的可靠运行以及满额运行。针对星形接法的链式功率调节系统三相直流母线电压不平衡的问题, 本文提出了一种基于负序电压注入的平衡三相直流母线电压方法。论文说明了方法的原理, 推导了主要的实现步骤, 与已有的基于零序电压注入的平衡方法进行了比较。仿真和实验证明该方法的有效性。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	万承宽
	杨耕
	张桐硕
	邬伟扬
	赖成毅

关键词 ：直流母线电压平衡, 负序电压注入, H桥级联变换器, 功率调节系统

Abstract：Three-phase cascade H-bridge (CHB) power regulation system (PRS) can be used for the dynamic adjustment of active and/or reactive power in power grid. This system consists of many sets of DC bus. Because of the performance differences of the electrical storage unit and load imbalance in DC bus, the DC link voltages are imbalance among different phases, which makes derating operation or even failure. This paper proposes a DC voltage balance method based on the negative-sequence-voltage injection. The principle of the method is described and the basic algorithms are derived for the implementation. The strategy is also compared with the zero-sequence voltage injection based strategy. The simulation and experimental results verify validity of the method.

Key words： DC link voltage balance negative-sequence-voltage injection cascade H-bridge converter power regulation system

收稿日期: 2011-12-31 出版日期: 2014-03-20

PACS:

TM712

基金资助:国家自然科学基金重点资助项目(50837003, 60974130)。

作者简介: 万承宽男, 1985年生, 硕士, 助理工程师, 研究方向为电力电子系统及其并网控制技术。杨耕男, 1957年生, 教授, 博士生导师, 主要研究方向为运动控制系统、电力电子系统和新能源发电技术。

引用本文:

万承宽, 杨耕, 张桐硕, 邬伟扬, 赖成毅. 基于星形接法的三相链式功率调节系统直流母线电压平衡控制[J]. 电工技术学报, 2012, 27(12): 256-263. Wan Chengkuan, Yang Geng, Zhang Tongshuo, Wu Weiyang, Lai Chengyi. DC Bus Voltage Balancing Control of Three-Phase Cascade Power Regulation System with Star Connection. Transactions of China Electrotechnical Society, 2012, 27(12): 256-263.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I12/256

[1] Smith JC. Wind power: present realities and future possibilities[J]. IEEE Proceedings, 2009, 97(2): 195-197.
[2] Blaabjerg F, Chen Z, Kjaer S. Power electronics as efficient interface in dispersed power generation systems[J]. IEEE Transactions on Power Electronics, 2004, 19(5): 1184-1194.
[3] Baran M E, Teleke S, Anderson L, et al. STATCOM with energy storage for smoothing intermittent wind farm power[C]. IEEE Conference Proceedings, 2008: 1-6.
[4] J S Lai, F Z Peng. Multilevel converters—a new breed of power converter[J]. IEEE Transactions on Industry Application, 1996, 32(3): 509-517.
[5] Maharjan L, Inoue S, Akagi H. A transformerless energy storage system based on a cascade multilevel PWM converter with star configuration[J]. IEEE Transactions on Industry Application, 2008, 44(5): 1621-1630.
[6] 刘文华, 宋强, 滕乐天, 等. 基于链式逆变器的50MVA静止同步补偿器的直流电压平衡控制[J]. 中国电机工程学报, 2004, 24(4): 145-150.
Liu Wenhua, Song Qiang, Teng Letian, et al. Balancing control of DC voltages of 50 MVA STATCOM based on cascade multilevel inverters[J]. Proceedings of the CSEE, 2004, 24(4): 145-150.
[7] Q Song, W Liu, Z Yuan, et al. DC voltage balancing technique using multi-pulse optimal PWM for cascade H-bridge inverters based STATCOM[C]. In Proceedings of IEEE PESC, Aachen, Germany, 2004.
[8] F Z Peng, J S Lai. A multilevel voltage-source inverter with separate DC sources for static var generation[J]. IEEE Transactions on Industry Application, 1996, 32(5): 1130-1138.
[9] 刘钊, 刘邦银, 段善旭, 等. 链式静止同步补偿器的直流电容电压平衡控制[J]. 中国电机工程学报, 2010, 29(30): 7-12.
Liu Zhao, Liu Bangyin, Duan Shanxu, et al. DC capacitor voltage balancing control for cascade multilevel STATCOM[J]. Proceedings of the CSEE, 2010, 29(30): 7-12.
[10] T J Summers, R E Betz, G Mirzaeva. Phase leg voltage balancing of a cascaded H-bridge converter based STATCOM using zero sequence injection[C]. 13th European Conference on Power Electronics and Application, 2009.
[11] 中国国家标准化管理委员会. GB/T 15543-2008 电能质量三相电压不平衡[S]. 北京: 中国标准出版社, 2008.
[12] IEEE Std 1159™-2009. IEEE Recommended Practice for Monitoring Electric Power Quality[S]. 2009.
[13] C Wan, G Yang, W Wu, et al. An active and reactive power regulating system based on a cascaded- converter[C]. The 2nd International Symposium on Power Electronics for Distributed Generation Systems, Hefei, China, 2010.
[14] Chengkuan Wan, Geng Yang, Hua Geng, et al. DC link voltage balancing control of a three-phase cascade power regulation system with star connection[C]. International Conference on Electrical Machines and Systems, Beijing, China, 2011.
[15] Elena Villanueva, Pablo Correa, José Rodríguez, et al. Control of a single-phase cascaded H-bridge multilevel inverter for grid-connected photovoltaic systems[J]. IEEE Transactions on Industry Electronics, 2009, 6(11): 4399-4406.