移相全桥原边箝位二极管的损耗分析  

Analysis Loss of Phase-shifting Full Bridge Primary Clamping Diode

作　　者：李志雨 LI Zhiyu(Shenzhen Dade Aviation Technology Co.,Ltd.,Guangdong 518100,China)

机构地区：[1]深圳市达德航空科技有限公司,广东518100

出　　处：《电子技术（上海）》2024年第9期1-3,共3页Electronic Technology

摘　　要：阐述针对移相全桥变换器的整流二极管的电压尖峰问题,常用的初级侧二极管箝位抑制方法存在损耗不可忽略且和多种因素有关。为此,基于移相全桥变换器的结构特点建立仿真模型,分析箝位二极管的工作原理及产生损耗的机制,提出增大谐振电感和减小滤波电感可以降低箝位二极管损耗的方法,并经过仿真试验验证该方法的有效性。This paper describes the voltage spike problem of rectifier diodes in phase-shifting full bridge converters. The commonly used primary side diode clamping suppression methods have losses that cannot be ignored and are related to multiple factors. It establishes a simulation model based on the structural characteristics of phase-shifting full bridge converters, analyzes the working principle of clamping diodes and the mechanism of loss generation, proposes methods to reduce clamping diode losses by increasing resonant inductance and reducing filtering inductance, and verifies the effectiveness of this method through simulation experiments.

关 键 词：器件设计 移相全桥 箝位二极管 损耗谐振 

分 类 号：TN391.9[电子电信—物理电子学] TM46[电气工程—电器]