变速恒频双馈风力发电系统的励磁电源

上海大学学报(自然科学版) ›› 2009, Vol. 15 ›› Issue (5): 512-516.

变速恒频双馈风力发电系统的励磁电源

上海大学机电工程与自动化学院,上海市电站自动化技术重点实验室,上海 200072

收稿日期:2008-07-02 出版日期:2009-10-30 发布日期:2009-10-30
通讯作者: 陈国呈(1944～)，男，教授，博士生导师，博士，研究方向为电机驱动、电力电子变换等. E-mail:gchchen@mail.shu.edu.cn
基金资助:
台达电力电子科教发展基金资助项目(DREO2006017);上海市科委基金资助项目(06DZ12211);上海市重点学科建设资助项目(T0103)

AC-Excited Power Supply for Variable-Speed Constant-Frequency Wind Energy Generation with Doubly-Fed Induction Generator

School of Mechatronics Engineering and Automation, Shanghai Key Laboratory of Power Station Technology, Shanghai University, Shanghai 200072, China

Received:2008-07-02 Online:2009-10-30 Published:2009-10-30

摘要/Abstract

摘要：

给出了变速恒频双馈风力发电系统中交流励磁电源的控制方案.在基于电网电压定向的基础上,分别对转子侧变换器和网侧变换器进行了研究.分析了双馈电机数学模型,并对空载并网控制策略进行了设计,实现了系统在变风速条件下无冲击电流并网.采用直接电流控制对网侧变换器进行控制,并实现了能量双向流动,功率因数可调,使双馈风力发电系统能运行在次同步和超同步两种状态下.实验结果证实了理论分析的正确性和控制策略的有效性.

关键词: 变速恒频;双馈感应电机;励磁电源;电网电压定向;空载并网;直接电流控制

Abstract:

This paper proposes a control method of AC-excited power supply for variable-speed constant-frequency (VSCF) wind energy generation with doubly-fed induction generator (DFIG). Based on grid voltage orientation, rotor-side converter and grid-side converter are studied. By analyzing the mathematical model of DFIG, the control strategy of idle load grid-connection is designed. It realizes grid-connection without impact current under variable wind speed. The grid-side converter is controlled by direct current control, achieving bidirectional energy flow and power factor adjustment. DFIG wind energy generation can be realized both in subsychronous and supersynchronous operations. Experiments show accuracy of the theory and effectiveness of the control strategy.

Key words: variable-speed constant-frequency (VSCF); doubly-fed induction generator (DFIG); AC-excited power supply; grid voltage orientation; idle load grid-connection; direct current control

中图分类号:

TM 310

俞俊杰崔开涌张翼陈国呈. 变速恒频双馈风力发电系统的励磁电源[J]. 上海大学学报(自然科学版), 2009, 15(5): 512-516.

YU Jun-Jie, CUI Kai-Yong, ZHANG Yi, CHEN Guo-Cheng. AC-Excited Power Supply for Variable-Speed Constant-Frequency Wind Energy Generation with Doubly-Fed Induction Generator[J]. Journal of Shanghai University（Natural Science Edition）, 2009, 15(5): 512-516.