摘要
针对典型非线性负载三相相控整流桥的模拟,提出一种数字化实现方法。首先详细分析了三相相控整流桥的工作特性,提出在晶闸管不同触发角情况下的负载指令电流生成算法。该方法的提出,增加了现有电力电子负载所能模拟的负载类型。求解得到的三相相控整流桥的输入电流,作为负载模拟变换器电流环的参考电流。考虑到单频率的控制器无法实现非线性电流的无静差跟踪,还提出一种采用比例+重复控制器的电流环控制策略。仿真和实验验证了提出的负载指令生成算法的准确性以及电流环控制策略的有效性。
Aiming at the simulation of a typical nonlinear load three phase controlled rectifier bridge,a newmethod was proposed.The operating characteristic of the three-phase phase-controlled rectifier bridge was analyzedin detail,and the generation algorithm of the load instruction current was presented.The proposed method increasedthe load types that could be simulated by the existing power electronic load.The input current of the three-phasephase-controlled rectifier was obtained as the reference current of the load current loop of the load simulationconverter.Considering that the single frequency controller can not realize the non static error tracking of the nonlinearcurrent,a current loop control strategy using proportional plus repetitive controller was proposed.Simulation andexperiments verify the accuracy of the load instruction generation algorithm and the effectiveness of current loopcontrol strategy.
作者
宋鹏先
张郁颀
唐庆华
SONG Pengxian;ZHANG Yuqi;TANG Qinghua(State Grid Tianjin Electric Power Research Institute,Tianjin 300380,China;State Grid Customer Service Center,Tianjin 300380,China)
出处
《电气传动》
北大核心
2017年第2期65-68,共4页
Electric Drive
关键词
三相相控整流桥负载
重复控制器
电力电子负载
three-phase phase-controlled rectifier bridge load
repetitive controller
power electronic load
