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电气传动 2009 年第 39 卷第 6 期 EL ECTRIC DRIV E 2009 Vol. 39 No. 6
基于 TMS320F2808 的风力发电网侧 PWM
整流器的设计
李小华,王辉,黄科元,李继光
(湖南大学电气与信息工程学院,湖南长沙 410082)
摘要:直驱永磁风力发电系统中,永磁发电机的输出电压的幅值和频率随风速的波动而变化,不可直接并
网。其实现并网最简单的办法是加入直流环节。因 PWM 整流技术具有输入电流正弦、功率因数可控、能量
双向流动、直流母线电压可控制和抗负载扰动能力强等优点而获得广泛的重视。因此 PWM 整流是实现并网
积极而有效的方法。
关键词:风力发电;并网; PWM 整流;电流正弦;能量双向流动
中图分类号: TM614 文献标识码:A
Design of Wind Power Grid PWM Rectif ier Based on the TMS320F2808
L I Xiao hua ,WAN G Hui , HUAN G Ke yuan ,L I Ji guang
( College of Electrical and Inf ormation Engineering , Hunan University , Changsha 410082 , Hunan, China)
Abstract :The electric power from the permanent generators direct driven by wind turbine can not
be utilized by connecting the generator to the grid directly since the voltage and the frequency of the generator
will change when the wind speed changes. The simple way to realize connecting grid is to join a DC link. PWM
rectification is paid widely attention because the advantage of sinusoidal input current , power factor controlled ,
bi direction flow of energy , DC bus voltage control and anti disturbance capacity load. Therefore , PWM recti
fier is a positive and effective way on connecting grid.
Key words :wind power generation ;connecting grid ; PWM rectifier ;current sine ;bi direction energy flow
发电机组的发电量正在不断增加,对风力发电机
1 引言
组可靠性和效率要求也在不断提高,齿轮箱的存