摘要
电流型PWM整流器因其良好的功率因数和直流电流源特性,可望在某些场合取代产生大量谐波的二极管或晶闸管相控整流装置,但是由于其本身的强耦合非线性特性,使得变流器常采用复杂的直接电流控制策略,从而使控制器的设计非常复杂。文中提出一种改进的基于d-q坐标系的间接电流控制方法,在电网电压平衡情况下,通过解耦控制,能获得线性的动态响应。
The current source PWM rectifier with good power factor and dc current source characteristics are expected to replace the diode or thyristor on some occasions. But the state space average model of current-source PWM rectifier is a multi-input multi-output nonlinear system and the coupling between state variables exists,which make the controller’s design difficult. This paper puts forward a kind of improvement indirect current control method which based on d-q coordinate system. The strategy can achieve the dynamic response of the linear through the decoupling control in the power grid voltage balance situation.
出处
《电子设计工程》
2013年第10期84-86,89,共4页
Electronic Design Engineering
关键词
电流型PWM整流器
间接控制
非线性
解耦
current source PWM rectifier
indirect control
nonlinear
decoupling
