Bi-frequency control for LLC resonant converter with fast transient response

被引：2

作者：

Zhong, Shu ^{[1
]}

Xu, Jianping ^{[1
]}

Zhao, Sheng ^{[2
]}

Zhou, Xiang ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 610031, Sichuan, Peoples R China

[2] China Elect Technol Grp Corp, Res Inst 47, Shenyang 110032, Liaoning, Peoples R China

来源：

ELECTRONICS LETTERS | 2016年 / 52卷 / 20期

关键词：

transient response; frequency control; resonant power convertors; voltage control; control system synthesis; bi-frequency control; LLC resonant converter; fast transient response; output voltage regulation; control pulse frequency; BF control; controller design;

D O I：

10.1049/el.2016.2638

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Bi-frequency (BF) control for LLC resonant converter is proposed and studied. Compared with conventional voltage mode control of LLC resonant converter, which realises output voltage regulation by adjusting control pulse frequency cycle by cycle, BF control of LLC resonant converter realises its output voltage regulation by adjusting the combination of two preset control pulses with 50% duty ratio and different switching frequencies. BF controlled LLC resonant converter benefits from simple controller design and fast transient response. A 130 W prototype is presented to verify the analysis results of BF control method.

引用

页码：1710 / U57

页数：2