共高频母线电能路由器局部模块闭锁研究  

Study on Partial Module Blocking in High-frequency-bus Electric Energy Router

作　　者：袁立强[1] 戴宇轩 牟迪[1] 郑名皓 张凯华 陈凯楠[1] 赵争鸣[1] YUAN Liqiang;DAI Yuxuan;MOU Di;ZHENG Minghao;ZHANG Kaihua;CHEN Kainan;ZHAO Zhengming(State Key Laboratory of Control and Simulation of Power System and Generation Equipment(Department of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China)

机构地区：[1]电力系统及发电设备安全控制和仿真国家重点实验室(清华大学电机系),北京市海淀区100084

出　　处：《中国电机工程学报》2023年第20期8005-8014,共10页Proceedings of the CSEE

基　　金：混合直流电力电子变压器全工作域高效率调制及设计方法研究(52207210)。

摘　　要：以模块化多有源桥电路为基础的新型共高频母线结构的电能路由器由于具有变换环节少、功率密度高等特点,在交直流混合系统应用中具有显著优势。实际应用中,局部模块因故障保护或冗余控制等原因需封锁器件脉冲停运,但在杂散参数引发的高频振荡影响下仍能传输功率,可能造成系统安全问题。为保证装置的稳定运行,文中建立高频母线结构下的闭锁模块高频振荡模型,可快速计算不同工况下的电路稳态波形,由此分析局部模块闭锁后的系统振荡特性和模块功率传输行为,并提出于模块交流侧安装隔离开关的措施,分析隔离开关杂散参数对振荡特性和闭锁模块传递功率行为的影响。最后,在实际功率单元模块进行实验,仿真和实验对比验证了所提模型的准确性和隔离开关措施的可行性。The high-frequency-bus electric energy router based on the modular-multiactive-bridge(MMAB)circuit has significant advantages in hybrid AC-DC system applications due to fewer conversion units and higher power density.In practice,partial module will shut down switch pulses due to circuit fault or redundancy control.However,the blocked module will transmit power because of high frequency oscillation resulted from parasitic parameters,which may cause system safety problems.In order to ensure the stable operation of the equipment,this paper proposes the oscillation model of high-frequency bus structure with blocked module,which can quickly calculate the steady-state waveforms of circuit under different operation conditions.And then the system oscillation characteristics and the module power transmission behavior after partial module blocking are analyzed.The scheme to install disconnect switches on the AC side of module is proposed to solve the problems,and the effect of disconnect switch parasitic parameters on oscillation characteristics and blocked module power transmission behavior is analyzed.Finally,experiments are carried out on the practical power unit modules.The simulation and experimental results verify the accuracy of the proposed model and the feasibility of the disconnect switches.

关 键 词：高频母线结构 局部模块闭锁 功率传输 高频振荡 

分 类 号：TM46[电气工程—电器]