Predictive Synchronous Rectification Control Scheme for Resonant DC-DC Converters for Battery Charging and Telecom Application

被引:2
|
作者
Chitpadi, Nagesha [1 ]
Lakshminarasamma, N. [1 ]
机构
[1] Indian Inst Technol Madras, Dept Elect Engn, Chennai 600036, Tamilnadu, India
来源
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN INDUSTRIAL ELECTRONICS | 2024年 / 5卷 / 04期
关键词
LCLC Resonant Converter; predictive control; resonant capacitor voltage sense; synchronous rectification; DRIVING SCHEME; LLC; RECTIFIER;
D O I
10.1109/JESTIE.2024.3393616
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
Synchronous rectifier schemes for the resonant dc-dc converter significantly improve the power conversion efficiency. The predictive synchronous rectification scheme for an LCLC resonant converter for a battery charging and telecom application is proposed in this work. During converter operation, the resonant capacitor voltage is sensed through an analog to digital converter, and based on the discretized time domain equations, the turn-on and turn-off instances are precisely computed using computation and synchronous MOSFET on time predictor block for varying switching frequency of operation. The proposed predictive technique eliminates the need for current sensors, reducing overall system cost and conduction loss associated with it. The proposed predictive synchronous rectification method is tested in a 1 kW hardware prototype for varying line and load conditions. The proposed control scheme is able to track turn-on and turn-off instances precisely with a low timing error of 2% to 3% of the synchronous MOSFET ON time.
引用
收藏
页码:1698 / 1708
页数:11
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