高频逆变电阻焊电源损耗分析  

Analysis of high frequency inverter spot welding power source loss

作　　者：刘璞 杨凯[1] 黄海松[1] Liu Pu;Yang Kai;Huang Haisong(Key Laboratory of Modern Manufacturing Technology of the Ministry of Education,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学现代制造技术教育部重点实验室,贵阳550025

出　　处：《电子测量技术》2022年第3期19-24,共6页Electronic Measurement Technology

基　　金：贵州省科技计划项目(黔科合基础[2020]1Y232);贵州省普通高等学校青年科技人才成长项目(黔教合KY字[2021]096);贵州大学引进人才科研基金(贵大人基合字(2019)07号)项目资助。

摘　　要：为准确计算高频逆变式电阻焊电源电路放电能量,对电源电路中的能量损耗进行了量化分析。在精确建模的基础上,通过电路仿真验证了PSpice物理器件仿真模型的有效性;基于参数量化能耗模型,采用拟合积分法分析了电源电路主要损耗,为电源样机设计提供参考依据。仿真结果表明,采用有限双极性软开关技术能有效降低高频逆变电路的开关损耗,同步整流电路损耗占总电源损耗的69%,需重点考虑电源高频变压器-同步整流一体化设计时的结构与热回路问题。In order to accurately calculate the discharge energy of high frequency inverter resistance welding power supply,the energy loss in the power supply circuit was quantified.On the basis of precise modeling,the effectiveness of PSpice physical device simulation model is verified by circuit simulation.Based on the parametric quantified energy consumption model,the main loss of power circuit is analyzed by fitting integral method,which provides reference for the design of power prototype.The simulation results show that the finite bipolar soft switching technology can effectively reduce the switching loss of the high-frequency inverter circuit,and the synchronous rectifier circuit loss accounts for 69%of the total power loss.Therefore,the structure and thermal loop of the high-frequency transformer and synchronous rectifier integrated design of the power supply should be considered.

关 键 词：逆变电源 有限双极性 同步整流 损耗分析 

分 类 号：TM46[电气工程—电器]