LLC谐振变换器的滑模混合控制方法  

Sliding Mode Hybrid Control Strategy of LLC Resonant Converter

作　　者：殷帆 李先允[1] 王书征[1] 卢乙 YIN Fan;LI Xianyun;WANG Shuzheng;LU Yi(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,Jiangsu,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211167

出　　处：《电气传动》2022年第3期17-23,共7页Electric Drive

基　　金：江苏省重点研发计划项目(BE2018130);江苏省研究生科研与实践创新计划项目(SJCX19_0534)。

摘　　要：为了解决LLC变换器在变频控制下电压增益范围较窄的问题,提出了一种基于滑模控制的混合控制策略。该控制策略结合了脉冲频率调制和移相控制的优点,在混合控制策略下,LLC谐振变换器能够根据增益大小切换模式。详细分析了LLC谐振变换器的工作原理以及工作特性,并给出滑模混合控制策略的具体实现方案。仿真结果证明了所提控制方法的可行性和优越性。In order to solve the problem of narrow voltage gain range of LLC converter under frequency conversion control,a hybrid control strategy based on sliding mode control was proposed,in which the advantages of pulse frequency modulation and phase shift control were combined. Under the hybrid control strategy,the mode of LLC resonant converter could be switched according to the gain. The working principle and characteristics of LLC resonant converter were analyzed in detail,and the concrete realization scheme of hybrid control strategy based on sliding mode control was given. The feasibility and superiority of the proposed control method were proved by the simulation results.

关 键 词：LLC变换器 滑模控制 脉冲频率调制 移相控制 

分 类 号：TM46[电气工程—电器]