变速恒频风力发电最大功率点跟踪控制

上海大学学报(自然科学版) ›› 2009, Vol. 15 ›› Issue (4): 351-357.

变速恒频风力发电最大功率点跟踪控制

吴国祥12 陈国呈1 俞俊杰1 蔚兰1 马祎炜1

1.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;
2.南通大学电子信息学院,江苏南通 226007

收稿日期:2008-04-18 出版日期:2009-08-30 发布日期:2009-08-30
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:
教育部博士点基金资助项目（20060280018）；上海市教委基金资助项目（06ZZ03）;南通大学自然科学研究基金资助项目(08Z022)

Maximum Power Point Tracking Control Strategy for VariableSpeed ConstantFrequency Wind Power Generation

1.School of Mechatronics Engineering and Automation, Shanghai Key Laboratory of Power Station Technology, Shanghai University, Shanghai 200072, China;
2.School of Electronics and Information, Nantong University, Nantong 226007, Jiangsu, China

Received:2008-04-18 Online:2009-08-30 Published:2009-08-30

摘要/Abstract

摘要：

交流励磁变速恒频(VSCF)风力发电时，常使用电网电压定向矢量控制技术来实现双馈电机(DFIG)输出有功、无功功率的解耦控制，从而完成最大风能跟踪.然而研究发现,在实行最大风能跟踪时，发电系统向电网输送的净电能并非最多.提出一种以向电网输送净电能最多为目标的新的最大功率点跟踪控制策略.该控制策略在不检测风速情况下，能够自动寻找并跟随最大功率点，且不依赖风力机最佳功率特性曲线，提高了发电系统的运行效率，具有良好的动、静态性能和鲁棒性.仿真和实验结果证明了该控制策略的正确性与有效性.

关键词: 变速恒频;电网电压定向;解耦;最大功率点跟踪

Abstract:

Vector control technique of grid voltage orientation is often applied in ACexcited variable speed constant frequency (VSCF) wind power generation to implement decoupling control of active power and reactive power. Using this method, maximum wind energy tracking can be realized. However, the net power delivered to the grid in the maximum wind energy tracking mode does not reach the upper limit. In this paper, a novel maximum power point tracking control strategy is presented to deliver a maximum amount of power to the grid. The maximum power point can be tracked automatically without measuring wind speed, and the control is independent of optimal turbine power curve. It has excellent dynamic and static performances and good robustness. Simulation and experimental results confirm validity and accuracy of this technique.

Key words: variable speed constant frequency (VSCF); grid voltage orientation; decoupling; maximum power point tracking (MPPT)

中图分类号:

TM310

吴国祥12 陈国呈1 俞俊杰1 蔚兰1 马祎炜1. 变速恒频风力发电最大功率点跟踪控制[J]. 上海大学学报(自然科学版), 2009, 15(4): 351-357.

WU Guo-xiang, CHEN Guo-cheng, YU Jun-jie, YU Lan, MA Yi-wei. Maximum Power Point Tracking Control Strategy for VariableSpeed ConstantFrequency Wind Power Generation[J]. Journal of Shanghai University（Natural Science Edition）, 2009, 15(4): 351-357.