一种新型三相电压型PWM整流器滞环空间矢量控制
A novel space vector hysteresis control for three-phase voltage source PWM rectifier
李武云1
作者信息
摘要
提出了一种改进的滞环空间矢量控制，用于解决三相电压型PWM整流器采用传统滞环空间矢量控制时，电流跟踪效果不佳的问题。改进后的控制策略通过对交流侧误差电流矢量模值大小判断后，选择滞环环宽和对应的开关状态，同时总结出最佳的开关状态选择原则，以最大限度地低开关损耗，提高系统响应速度。最后在matlab/simulink下建立系统的仿真模型，通过对改进前后两种控制策略下交流侧电流质量的对比，进一步验证了改进后控制策略的优越性。
Abstract
The improved space vector hysteresis control was introduced for the disadvantage of poor current tracking caused by the traditional control strategy in the three-phase voltage source PWM rectifier. The improved strategy choose the hysteresis loop width and the switch state through the judgment of the AC error current vector modulus, and the selection principle of the switch state was provided in order to reduce the switching losses. Final y, the simulation model was established under matlab/simulink to compare AC current quality between the traditional and the improved control strategies, the simulation results further demonstrated the superiority of the improved control scheme.
关键词
三相电压型PWM整流器/滞环空间矢量控制/滞环/双闭环控制/matlabKey words
Three-phase voltage source PWM rectifier/space vector hysteresis control/hysteresis/dual closed-loop control/matlab引用本文复制引用
出版年
2014
NETL
NSTL
万方数据