电力逆变器新型电流滞环控制方法研究  

A novel current hysteresis control method for power inverter

作　　者：周彦 

机构地区：[1]湖南省常德市电业局,415000

出　　处：《中国科技信息》2011年第17期137-137,142,共2页China Science and Technology Information

摘　　要：电力逆变器在电力行业中有着广泛的应用,在对电力逆变器控制方法进行系统研究的基础上,本文提出了一种适用于电力逆变器的电流滞环控制方法,其单个H桥采用与单极性SPWM调制相似的单极性电流滞环控制,脉冲产生简单,可以有效减少开关损耗。用类似相移SPWM脉冲产生方式来实现电流滞环控制时逆变器一相桥臂移相控制脉冲的产生。该控制方式保留了滞环电流控制响应速度快、具有内在限流能力和稳定性好等优点。通过仿真结果验证了本文所提方法的正确性。Based on investigating of control method for power inverter systematically,a current hysteresis control method is proposed for power inverter in this paper,which is similar to unipolar SPWM modulation for a single bridge.It can reduce the switching losses effectively.The phase-shifted control pulse for multi H bridges of a phase with current hysteresis control can be generated which is similar to the phase shift SPWM.It retains fast response,internal current limiting and with good stability for current hysteresis control.The simulation results verify the validity of the proposed method.

关 键 词：电力逆变器 多电平 电流滞环控制 移相SPWM 

分 类 号：TM464[电气工程—电器]