摘要
研究了一种具有低开关频率的三电平有源前端变换器AFEs低开关频率有限控制集模型预测控制LFCSMPC策略。该策略在一个控制周期内,同时施加有效电压矢量和零电压矢量。同时,引入降低平均开关频率控制目标项,并基于该目标函数求得有效电压矢量的最优作用时间,从而将带有最优作用时间的开关状态直接作用于功率变换器。该方法在兼顾控制性能的同时有效地降低功率器件平均开关频率,实现了低开关频率下的三电平AFEs高效运行。仿真结果表明,该方法在实际工程应用中具有一定的价值。
This paper introduces a new FCS-MPC with low switching frequency for AFEs.Both one active voltage vector and one zero voltage vector are applied during one control period.Meanwhile,the control target of low average switching frequency is introduced into a cost function.Based on the function,the selected voltage vector with the optimal action time can be obtained and the optimal voltage vector with optimal action time can be applied in threelevel AFEs.Therefore,the method not only realizes the desired control performance but also effectively reduces the average switching frequency of power devices,which can realize the efficient operation of three-level AFEs with low switching frequency.The simulation results can provide reference for its application in actual projects.
作者
杨瓅
黄正波
王虹淋
YANG Li;HUANG Zhengbo;WANG Honglin(Chongqing Electric Power College, Chongqing 400053, P.R.China;State Grid Chongqing Beibei Power Supply Company, Chongqing 400070, P.R.China;Xiangyang Training Base of Army Service University, Xiangyang Hubei 441000, P.R.China)
出处
《重庆电力高等专科学校学报》
2018年第2期30-35,共6页
Journal of Chongqing Electric Power College
