基于级联双管反激拓扑的HVDC供电电路研究  

Research on a Power Supply Circuit for HVDC Based on Dual-tube Flyback Topology

作　　者：李灵鑫 焦玉屏 孙家程 邓富金 张琦[3] 任碧莹[3] LI Lingxin;JIAO Yuping;SUN Jiacheng;DENG Fujin;ZHANG Qi;REN Biying(Xi'an Megmeet Electric Co.,Ltd.,Xi'an 710065,Shaanxi,China;The 165th Institute of the Sixth Research Institute of China Aerospace Science and Technology Corporation,Xi'an 710100,Shaanxi,China;School of Electrical Engineering,Xi'an University of Technology,Xi'an 710054,Shaanxi,China;School of Electrical Engineering,Southeast University,Nanjing 211189,Jiangsu,China)

机构地区：[1]西安麦格米特电气有限公司,陕西西安710065 [2]中国航天科技集团公司第六研究院165所,陕西西安710100 [3]西安理工大学电气工程学院,陕西西安710054 [4]东南大学电气工程学院,江苏南京211189

出　　处：《电气传动》2023年第3期7-14,共8页Electric Drive

基　　金：陕西省自然科学基金(2020JM-449)。

摘　　要：高压直流(HVDC)输电系统常采用高压变换器进行高电位就近控制取电。然而模块内的高母线电压及其大范围波动对取电电源的高可靠性设计形成挑战。针对该问题,基于串联双管反激拓扑电路提出了一种高压模块取电系统。该系统以多输入、单输出形式的直流变压器为变压载体,并利用在同步控制信号下的各级联单元的自均压特征实现了输入各串联电路的动态自均压控制,主动降低了各模块中半导体开关的电压应力;另外,该方法具有漏感能量回馈效率高、开关管最大电压应力钳位到输入电压优点。最后,借助系统仿真与半实物仿真平台实验验证了所提自供电电路系统的可行性以及理论分析的正确性。High voltage converter is often used in high voltage direct current(HVDC)transmission system to control power supply nearby at high potential.However,the high bus voltage and its wide range fluctuation in the module pose a challenge to the high reliability design of power supply.To solve this problem,a high voltage module power supply system was proposed based on the series dual-tube flyback topology.The multi-input and single-output DC transformer was used as the transformer carrier of the system.Using the self balancing characteristics of all levels of connected units under the synchronous control signal,the dynamic self balancing control of each series circuit was realized,and the voltage stress of semiconductor switches in each module was actively reduced.In addition,this method has the advantages of high leakage inductance energy feedback efficiency and clamping the maximum voltage stress of the switch to the input voltage.Finally,with the help of system simulation and hardware in the loop simulation platform,the feasibility of the proposed self powered circuit system and the correctness of theoretical analysis were verified.

关 键 词：高位能取电电路 双管反激拓扑 动态均压 

分 类 号：TM46[电气工程—电器]