大功率直驱风力发电系统直流侧电压复合控制策略*

作者：韩坤1，谢歆2，季翼鹏1，陈国柱1 日期：2009-06-24/span> 浏览：3727 查看PDF文档

大功率直驱风力发电系统直流侧电压复合控制策略*

韩坤1，谢歆2，季翼鹏1，陈国柱1
（1.浙江大学 电气工程学院，浙江 杭州 310027；2.江苏省常州轨道车辆牵引传动工程技术研究中心，江苏 常州 213000）

摘要：在开发大功率直驱型风力发电双脉宽调制（PWM）变流器的过程中，为有效抑制由于电机侧有功功率及电网电压的突变而导致的直流侧电压的大幅波动，提出了一种闭环控制与前馈控制相结合的直流侧电压复合控制策略，即在电流控制环中引入机侧有功功率和电网电压前馈控制。仿真实验有效验证了该方法的可行性。研究结果表明，这种控制策略与传统单纯的直流侧电压闭环控制相比，有更快的响应速度和更强的抗扰性能，有效地提高了系统的鲁棒性。
关键词：风力发电；并网变流器；直流侧电压；有功前馈；电网电压前馈；脉宽调制
中图分类号：TM461文献标识码：A文章编号：1001-4551(2009)06-0050-04

Compound control strategy of DClink voltage stability for high power
directdrive wind generation system
HAN Kun1, XIE Xin2, JI Yipeng1, CHEN Guozhu1
(1. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;
2. Changzhou Propulison Center, Changzhou 213000, China)
Abstract: During developing dual pulse width modulation(PWM) converters for high power directdrive wind generation, in order to effectively restrain the sharp fluctuation of DClink voltage caused by the drastic changes of generator active power and the grid voltage, a compound control strategy of DClink voltage stability which combined closeloop control with feed forward control was proposed. In this control, the generatorside active power and grid voltage feed forward control was introduced in the current control loop, which was verified by the simulation. The research results show that the proposed control strategy has faster response speed and stronger immunity, compared with the conventional single closeloop control.
Key words: wind power generation; gridconnected converter; DClink voltage; active power feed forward; grid voltage feed forward; pulse width modulation(PWM)
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