一种混合滞环控制的LLC控制器应用研究  

Research on the application of LLC controller with hybrid hysteresis control

作　　者：王博[1] WANG Bo(School of Traction Power,Xi′an Railway Vocational&Technical Institute,Shaanxi Xi′an 710026,China)

机构地区：[1]西安铁路职业技术学院牵引动力学院,陕西西安710026

出　　处：《工业仪表与自动化装置》2024年第3期100-104,134,共6页Industrial Instrumentation & Automation

基　　金：西安铁路职业技术学院2023年度院级课题(XTZY23K13)。

摘　　要：为优化LLC变换器的瞬态性能、间歇工作特性及轻载效率,提出了一种LLC的混合滞环控制方法及变换器实现方案。在深入分析混合滞环控制原理、对称半桥LLC变换器设计方法的基础上,给出基于混合滞环控制的模拟控制器应用方法及200 W对称半桥LLC变换器的关键参数设计,包括控制器外围电路设计,对称半桥电路设计,驱动电路设计,LLC谐振腔各项参数设计等,并通过实验样机进行详细验证。实验结果表明,所提出的混合滞环控制方法及控制器的应用设计科学可行。To optimize the transient performance,burst mode characteristics,and light load efficiency of LLC converter,a hybrid hysteresis control method and converter implementation scheme for LLC are proposed.On the basis of in-depth analysis of the principle of hybrid hysteresis control and the design method of symmetrical half bridge LLC converter,the application method of analog controller based on hybrid hysteresis control and the key parameter design of 200W symmetrical half bridge LLC converter are proposed,including peripheral circuit design of the controller,symmetrical half bridge circuit design,switcher driving circuit design,LLC resonant parameter design,and they are detailed verified through the experimental prototype.The experimental results indicate that the proposed hybrid hysteresis control method and the application design of the controller are scientifically feasible.

关 键 词：混合滞环控制 LLC谐振变换器 UCC25640x 脉冲频率控制 

分 类 号：TM464[电气工程—电器]