柔性多状态开关的改进控制策略研究  

Study on Improved Control Strategy of Flexible Multi-state Switch

作　　者：范朕宁 苏强 张新民 赵长伟 徐科[2] FAN Zhenning;SU Qiang;ZHANG Xinmin;ZHAO Changwei;XU Ke(Chengdong Power Supply Branch,State Grid Tianjin Electric Power Company,Tianjin 300250,China;State Grid Tianjin Electric Power Company,Tianjin 300010,China)

机构地区：[1]国网天津市电力公司城东供电分公司,天津300250 [2]国网天津市电力公司,天津300010

出　　处：《电气传动》2022年第13期27-34,共8页Electric Drive

基　　金：天津电力公司科技项目:基于柔性开关的交直流配电系统研究(KJ20-1-09)。

摘　　要：柔性多状态开关(flexible multi-state switch,FMS)的控制策略是保证其高效可靠、灵活可控亟待解决的关键技术挑战。针对静止坐标系比例谐振调节器参数设计复杂且受电网频率扰动影响较大问题,提出了一种基于比例复数谐振(proportional complex resonant,PCR)控制器的柔性多状态开关改进控制方法。建立了静止坐标系下柔性多状态开关的数学模型,推导了静止坐标系与同步坐标系下控制策略的等效机理。为了保证柔性多状态开关实现多模式稳定运行,提出了整流侧和逆变侧变换器的灵活切换控制策略,并进行了详细分析。最终,通过Matlab/Simulink仿真软件搭建了柔性多状态开关的仿真模型,仿真结果验证了所提出控制策略可行性和有效性。The control strategy of flexible multi-state switch(FMS)is a key technical challenge to ensure its high efficiency,reliability and flexibility. In order to solve the problems that the parameter design of proportional resonant(PR)controller is complicated and is greatly affected by grid frequency disturbance in stationary reference frame,an improved control method of FMS based on proportional complex resonant(PCR)controller was proposed. The mathematical model of FMS was established in stationary reference frame,and the equivalent mechanism of control strategy in stationary reference frame and synchronization reference frame was deduced. In order to ensure the multimode stable operation of FMS,flexible switching control strategy of the rectifier side and inverter side converter were proposed and analyzed in detail. Finally,the simulation model of FMS was built by Matlab/Simulink simulation software,and the feasibility and effectiveness of the proposed control strategy are verified by the simulation results.

关 键 词：柔性多状态开关 运行模式 静止坐标系 协调控制 比例复数谐振控制器 

分 类 号：TM28[一般工业技术—材料科学与工程]