单相组合式同相供电系统直接功率控制研究

Research on Direct Power Control of Single-phase Combined Co-phase Power Supply System

文章针对基于级联H桥结构的单相组合式同相供电系统,重点研究同相补偿器的控制策略。首先基于瞬时无功理论和延时构造法,给出同相供电系统的功率检测方法。然后以此为基础,推导了直接功率控制下的端口指令电压。最后,通过仿真对比了基于直接功率控制的单相组合式同相供电系统和基于直接电流控制的单相组合式同相供电系统,验证直接功率控制的优越性。

For the single-phase combined co-phase power supply system based on cascaded H-bridge structure,the control strategy of co-phase compensation device was mainly studied.Firstly,based on the instantaneous reactive power theory and the delay construction method,the power detection method of the co-phase power supply system was given.Then,based on this,the port command voltage under direct power control was derived.Finally,through simulation,the single-phase combined co-phase power supply system based on direct power control and the single-phase combined co-phase power supply system based on direct current control were compared to verify the superiority of direct power control.