三电平电路损耗分析及温升优化方法研究  

Research on Method of Three-Level Circuit Loss Analysis and Temperature Rise Optimization

作　　者：陈坤鹏 肖文勋[2] CHEN Kunpeng;XIAO Wenxun(Sineng Electric Co.,Ltd.,Wuxi 214000,China;School of Electric Power Engineering,South China University of Technology,Guangzhou 510000,China)

机构地区：[1]上能电气股份有限公司,江苏无锡214000 [2]华南理工大学电力学院,广东广州510000

出　　处：《电器与能效管理技术》2025年第2期24-28,40,共6页Electrical & Energy Management Technology

摘　　要：针对二极管中点箝位(NPC)三电平电路损耗分布不平衡的问题,采用有源中点箝位(ANPC)三电平电路,选择不同的电流通路将器件损耗分散在不同的开关管上。通过损耗的理论计算、热仿真以及实验验证,对两种电路的器件损耗和温升展开对比分析。结果表明,ANPC电路对于平衡器件损耗,降低器件温升,有显著的作用。Aiming at the problem of unbalanced loss distribution in the diode neutral-point-clamped(NPC)three-level circuit,the active neutral-point-clamped(ANPC)three-level circuit is adopted.Different current paths are selected to disperse the device losses among different switching tubes.Through theoretical calculation of losses,thermal simulation and experimental verification,the comparative analysis of the device losses and temperature rises of the two circuits is carried out.The results show that the ANPC circuit has a significant effect on balancing the device losses and reducing the device temperature rise.

关 键 词：三电平电路 损耗分析 温升优化 平衡器件 

分 类 号：TM46[电气工程—电器]