摘要
Quasi-Z源间接矩阵变换器是一种新型的电路拓扑。将Quasi-Z源间接矩阵变换器用于感应电机驱动系统,设计了按转子磁场定向的矢量控制系统,分析了感应电机的最优升压控制原理,得到了在保持电机磁通恒定的情况下,计算Quasi-Z源间接矩阵变换器直通占空比的方法。通过选择合适的直通占空比,可以提升Quasi-Z源间接矩阵变换器的输出电压,改善电机在输入电压较低情况下的动力性能,同时降低Quasi-Z源间接矩阵变换器的功率损耗,仿真和实验结果验证了该控制系统的有效性。
Quasi-Z source indirect matrix converter is a new circuit topology. Quasi-Z source indirect matrix converter was employed in induction motor drive system and the rotor filed-oriented vector control system was proposed. The optimal boost voltage control strategy of induction motor was discussed,and a method of calculating shoot-through duty cycle of Quasi-Z source indirect matrix converter when magnetic flux remains constant was given.By selected proper shoot-through duty cycle,the Quasi-Z source indirect matrix converter could produce greater AC output voltage than the line voltage,and the dynamic performance of the induction motor at low input voltage was improved,the power loss of Quasi-Z source indirect matrix converter was also reduced. The simulation and experimental results verify the effectiveness of the proposed control system.
出处
《电气传动》
北大核心
2017年第12期24-29,共6页
Electric Drive
基金
国家自然科学基金(51477008)
北京市自然科学基金(3152021)
