基于MMC的隔离型直流变换器参数优化设计  

Optimization Design of Power Element Parameters of Isolated DC/DC Converter Based on MMC

作　　者：谷重阳 胡光福 李培蕾 吴凤江[2] GU Chong-yang;HU Guang-fu;LI Pei-lei;WU Feng-jiang(China Aerospace Components Engineering Center,Bejing 100094,China;不详)

机构地区：[1]中国航天宇航元器件工程中心,北京100094 [2]哈尔滨工业大学,电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电力电子技术》2024年第1期96-99,共4页Power Electronics

摘　　要：以面向中压直流互联系统的基于MMC的双向隔离型DC/DC变换器为研究对象,以准两电平调制策略为基础分析了其稳态功率特性,详细推导了各模块电容电压和电感电流瞬时表达式,进而提出子模块电容和桥臂电感的优化设计方法,在满足预定电容电压和电感电流纹波约束的前提下,显著降低电容和电感值,从而降低系统成本和体积。实验验证了所提变换器参数设计方法的正确性和可行性。Taking the bidirectional isolation DC/DC converter based on MMC for the medium DC interlink system as the research object,the steady-state power and instantaneous characteristics of capacitor voltages and inductor currents are analyzed in detail.The optimized design methods of submodule capacitors and arm inductors are accordingly proposed.Under the constraint conditions of the fluctuation of submodule capacitor voltages and arm currents,the capacitances and inductances are reduced by the proposed parameter design method,and the volume and cost of the system are reduced.The correctness and feasibility of the proposed method are verified by the detailed experiments.

关 键 词：变换器 模块化多电平 参数设计 

分 类 号：TM46[电气工程—电器]