摘要
矢量控制用于三相电压型PWM变流器时,能够使系统得到较好的动静态特性,但当直流侧接入非阻性负载时,直流侧电压会出现较大纹波,造成输入电流THD值增大。利用重复控制的特点,提出了一种基于矢量控制和重复控制结合的控制方法。实验结果表明,该方法有效地降低了三相电压型PWM变流器输入电流的THD值,使系统达到了更好的性能。
Vector control will bring good dynamic and static performance for the three-phase voltage pwm converter. However,when the load is not the resistive, there are larger DC; voltage ripple, which has adverse impact on THD of input current. Used the characteristic of repetitive control, a control algorithm based on vector control and repetitive control is proposed. The experimental results show that this algorithm reduced the THD of input current and make good performance for the converter.
出处
《通信电源技术》
2008年第2期49-51,共3页
Telecom Power Technology
