Charge Current Control for LLC Resonant Converter

被引:0
作者
Choi, Hangseok [1 ]
机构
[1] Fairchild Semicond, 3030 Orchard Pkwy, San Jose, CA 95140 USA
来源
2015 THIRTIETH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2015) | 2015年
关键词
OPTIMAL TRAJECTORY CONTROL; DESIGN;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper proposes a charge current control method for LLC resonant converter where the total charge of the switch current is compared with the control voltage to modulate the switching frequency. Since the proposed control method uses resonant current for only a half switching cycle together with duty cycle balancing circuit, the circuit can be implemented easily with analog circuit. The charge control makes the system single pole system allowing easy compensation design. Since the charge of the switch current is proportional to the average input current over each switching cycle, it also allows constant power limit. The proposed method has been implemented and tested on a 225W LLC resonant converter.
引用
收藏
页码:1448 / 1452
页数:5
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