中国电机工程学报2025，Vol.45Issue(7)：2768-2778,中插27,12.DOI:10.13334/j.0258-8013.pcsee.232800
自举驱动在大电流应用下的故障机理分析及其优化设计研究
An Optimization Method for Parameters of Bootstrap Gate Driver With Fault Mechanism Analysis in High Current Applications
摘要
Abstract
Bootstrap gate drivers are widely used in phase-leg composed converters for their advantages such as less components and low cost.In high current converters,improper parameter design of bootstrap gate driver can lead to start-up gate-source voltage oscillation and phase-leg shoot-through,increasing the risk of devices and drivers failures and driving losses.Due to the lack of sufficient theoretical guidance in the parameters design of bootstrap gate drivers for high current converters,this paper studies and constructs a detailed model of the gate driver.Based on the model,the above fault mechanisms are studied,and the safety boundary for the parameter design of the gate driver is obtained.Then,the relationship between driving loss and the parameters is analyzed,and a universal optimum design method with fault protection and efficiency improvement is proposed.Simulations and experiments verify the accuracy of the theoretical analysis and the feasibility of the proposed approach.关键词
自举栅极驱动器/故障保护/低驱动损耗/优化Key words
bootstrap gate driver/fault protection/low driving loss/optimization分类
信息技术与安全科学引用本文复制引用
林文强,宫金武,潘尚智,林子森,邹辉,查晓明,姚良忠..自举驱动在大电流应用下的故障机理分析及其优化设计研究[J].中国电机工程学报,2025,45(7):2768-2778,中插27,12.基金项目
国家自然科学基金项目(52177191).Project Supported by National Natural Science Foundation of China(52177191). （52177191）
