电压型PWM逆变器的鲁棒电流控制方法  

Robust Current Control Method of Voltage Source PWM Inverter

作　　者：关静丽[1] 

机构地区：[1]北京航空航天大学

出　　处：《电气传动》2001年第5期25-26,41,共3页Electric Drive

摘　　要：近年来 ,电压型 PWM( Pulse Width Modulation)逆变器被广泛用于电机控制领域中 ,由于被控对象的控制性能受电流控制能力的影响 ,逆变器的电流跟踪控制就显得非常重要了。文章提出了一种 PWM逆变器的鲁棒电流控制方法 ,在负载参数和运行条件变动时 ,实际电流仍能精确跟踪参考值 ,参数变动的影响由时变的反馈增益 k来限制 ,反馈增益 k由李雅谱诺夫稳定性理论来设计 ,在线实时计算 ,以保证系统的稳定性和跟踪性能。In resent years,the voltage source PWM(Pulse Width Modulation)inverter is used for power supply in the field of motor control.Current tracking control of inverter is very important because current control ability affects control performance of plants.In this paper,the robust current control method of voltage source PWM inverter is presented,and current is controlled to be exactly equal to the reference current under variations of load parameters and operating conditions.The influence of parameter variations is restrained by feedback gain which is designed on Lyapunov's direct method and is calculated on line to ensure system's stability and tracking performance.

关 键 词：电流跟踪控制 电压型PWM逆变器 鲁棒电流控制 电机控制 

分 类 号：TM464[电气工程—电器] TM301.2