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.
出处
《电气传动》
北大核心
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)
关键词
4象限整流器
瞬时无功
预测电流控制
相位补偿
4 quadrant rectifier
instantaneous reactive power
predictive current control
phase eompensa tion
