交流励磁用三相PWM整流器的研究  

Study of three-phase PWM rectifier for AC-excitation

作　　者：黄科元[1] 贺益康[1] 胡奇峰[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2004年第1期48-51,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家863计划资助项目(2001AA512023-3);浙江省科技计划资助项目(413110201J39901).

摘　　要：为了改善脉宽调制型整流器(PWM整流器)的动、静态性能,基于三相PWM整流器的矢量控制原理,建立了整流器输入电流控制所需的d-q模型,提出了d、q轴电流的状态解耦和电网电压前馈补偿的综合控制策略,从而对电网波动和负载扰动具有较强的抗干扰能力.样机实验表明,该整流器能获得单位功率因数的正弦输入电流、稳定的直流输出电压和快速的动态响应,能够实现能量的双向流动,是满足交流励磁需要的理想整流电源.As an AC power source, the back-to-back PWM converter has good practical prospects for AC-excited variable-speed constant-frequency generation, wherein high-frequency PWM rectification is a key technology. To improve the steady and dynamic performance of the three-phase PWM rectifier, the d-q model based on the vector control principle was used to construct the rectifier's input current. The d-q model based current state decoupling and grid voltage feed-forward compensation control strategy was put forward to improve the ability against the grid fluctuation and load disturbance. Sinusoidal input current with unit power factor, steady output DC-voltage and fast dynamic response, and bi-direction power flowing ability show that the converter is an ideal rectifying power supply for AC-excited generator.

关 键 词：交流励磁 三相PWM整流器 脉宽调制 高频整流 变频电源 

分 类 号：TM461[电气工程—电器]