基于双不对称LLC半桥的全桥谐振变换器研究
Study of Full-bridge Resonant Converter Based on Dual Asymmetric Half-bridge LLC
张洁平1
作者信息
- 1. 闽西职业技术学院 智能制造学院, 福建 龙岩 364021
- 折叠
摘要
双不对称LLC半桥的全桥谐振变换器是一种采用定频控制的改进型LLC谐振变换器,具有很高的效率.先指出不对称 LLC 半桥谐振变换器存在的问题,再详细分析双不对称 LLC 半桥电路的工作原理、工作模态及参数选择,并根据选择的器件参数对变换器模型进行仿真试验.结果表明,该变换器能减小励磁电流叠加的环流损耗、关断损耗和零电压导通的无容性损耗,大大提高变换效率.
Abstract
The full-bridge resonant converter with dual asymmetric half-bridge LLC is an improved LLC resonant converter with fixed frequency control and a high-efficiency converter.This paper introduces the problems of asymmetric half-bridge LLC resonant converters and includes a detailed analysis of the operating principle,operating mode,and parameter selection of the dual asymmetric half-bridge LLC circuit.As well as the simulation tests of the converter model based on the selected device parameters.The results show that the converter can reduce the superimposed circulating losses of the excitation current,turn-off losses and zero-voltage conduction non-capacitance losses,greatly improving the conversion efficiency.
关键词
双不对称LLC/定频控制/谐振变换器/软开关Key words
dual asymmetric LLC/fixed frequency control/resonant converter/soft switching引用本文复制引用
基金项目
龙岩市产学研联合创新项目(2022LYF18005)
出版年
2024
NETL
NSTL
维普
万方数据