摘要
为解决用于大功率电机传动系统的逆变器并联控制问题,就如何改变各逆变器瞬时参考电压的控制方法进行研究。在建立电机电流和并联逆变器环流等效电路模型的基础上,分析电机电流和环流的控制原理,继而提出基于改变逆变器瞬时参考电压的主从式矢量控制策略,并给出系统均流控制具体的实现方法,最后对控制系统性能进行仿真分析。结果表明该控制方法实现了电机电流和并联逆变器环流的独立控制,不仅能有效减小并联逆变器之间的环流,而且电机的动态控制性能仍能达到单个逆变器供电的电机传动系统的性能水平。
In order to solve the control problem of parallel inverters for large-capacity motor drive system,a controlling means is studied which can change the instantaneous reference voltage of parallel inverters.Based on the circuit models and the control principles of motor current and circulating current,the master-slave control system of changing the instantaneous reference voltage of parallel inverters was developed,and the concrete realization of current balancing control was also developed.The simulation results show that the motor current can be shared and has good dynamic characteristics as a single inverter system.
出处
《电机与控制学报》
EI
CSCD
北大核心
2011年第2期84-88,共5页
Electric Machines and Control
基金
国家自然科学基金委员会创新研究群体科学基金资助项目(50721063)
海军工程大学自然科学基金项目(20100702000044)
关键词
并联逆变器
电机传动
环流
主从控制
参考电压调节
parallel inverters
motor drive
circulating current
master-slave control
reference voltage regulation
