摘要
基于三相PWM整流器的电压、电流双闭环控制结构,不影响系统跟随性的前提下,电流内环加上前馈补偿,提高其抗干扰性能。根据输入输出之间的功率平衡关系,电压外环加上负载电流反馈,抑制负载扰动对系统的影响。对q轴(有功功率轴)电流与d轴(无功功率轴)电流独立控制,并给出了电压调节器与电流调节器的设计、计算方法。最后,通过simulink软件,控制方法采用SVPWM的电流控制方法仿真,表明系统稳定性和抗干扰性都明显提高。
The voltage and current double closed loop control structure based on three-phase PWM rectifier with the current inner loop and feedforward compensation could improve its anti-interference performance without affecting its following performance. According to the power balance between input and output relations, the voltage outer loop with load current feedback restrained the influence of load disturbance on the system, q--axis （active axis）current and d-axis（reactive power axis） current was individually controlled, and the voltage regulator and current regulator design methods were given. Finally, by simulink software, the current control method with SVPWM simulation shows that the system stability and anti-interference are markedly improved.
出处
《电源技术》
CAS
CSCD
北大核心
2012年第4期533-536,共4页
Chinese Journal of Power Sources
关键词
整流器
前馈补偿
功率平衡
rectifier
feedforward compensation
power balance
