基于瞬时无功的三相4象限整流器相位补偿控制  

PWM Rectifier Phase Compensation Control Based on Instantaneous Reactive Power

作　　者：李伟[1] 唐蕾[1] 马志文[1] 

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《电气传动》2012年第9期25-28,共4页Electric Drive

基　　金：铁道部科技研究开发计划项目(2011J018-E);铁科院机辆所青年科技创新基金项目(1150JL09)

摘　　要：针对两电平三相4象限整流器,建立了整流器在两相静止坐标系下的数学模型,根据瞬时无功理论计算电源输入电流的无功分量,利用该分量对预测电流控制方法进行相位补偿,实现了4象限整流器单位功率因数运行。采用仿真软件搭建了系统模型并进行计算,对控制方法的可行性进行了验证。仿真结果表明,在牵引和再生制动工况下,控制方法能够保证电网的功率因数接近于1,并且具有很好的动态性能。Aiming at 3-phase 4 quadrant rectifier, the mathematic model in two phase static coordinate was analyzed. According to instantaneous reactive power theory, the reactive current of power current was calcu- lated. Predictive current control is compensated in phase by using reactive current, and unity power factor of 4 quadrant rectifier was implemented. System model was established and simulated in order to validate the feasi- bility of control strategy. The simulation results show that under traction and regenerative modes, the power factor of line is nearly unity,and the dynamic performance is guaranteed.

关 键 词：4象限整流器 瞬时无功 预测电流控制 相位补偿 

分 类 号：U264.5[机械工程—车辆工程]