中国电机工程学报2024，Vol.44Issue(16)：6597-6609,13.DOI:10.13334/j.0258-8013.pcsee.231451
基于状态平面分析法的LLC谐振变换器四阶段软启动
Four-Stage Soft Startup of LLC Resonant Converter Based on State Plane Analysis
李佳昊 1陈捷 1侯俊峰 1江凌峰 1佘焱 1王勇1
作者信息
- 1. 上海交通大学电气工程系,上海市闵行区 200240
- 折叠
摘要
Abstract
The startup process of LLC resonant converters is a complex dynamic process,and existing startup schemes often struggle to simultaneously ensure that the resonant current remains below the current limit and achieve a rapid startup.To achieve a fast and stable soft startup,this paper proposes a four-stage soft startup scheme for LLC based on state plane analysis.Through analyzing the state trajectory during the LLC startup process,the LLC startup process is divided into four stages.The resonant current at each stage is calculated to ensure that its maximum value does not exceed the current limit.Different implementation methods are designed for each stage,and the digital control implementation method of the LLC four-stage soft startup scheme is introduced.A simulation model and experimental prototype were built to verify the safety,speed,and the accuracy and rationality of the calculation of the four-stage soft startup scheme for LLC.关键词
LLC谐振变换器/软启动/状态轨迹Key words
LLC resonant converter/soft start/state trajectory分类
信息技术与安全科学引用本文复制引用
李佳昊,陈捷,侯俊峰,江凌峰,佘焱,王勇..基于状态平面分析法的LLC谐振变换器四阶段软启动[J].中国电机工程学报,2024,44(16):6597-6609,13.
