Digital Hysteresis Control Strategy for LLC Resonant Converter Suitable for Battery Charging

doi:10.16628/j.cnki.2095-8188.2022.05.013

Abstract

Abstract:

LLC resonant converter has low switching loss and high working frequency,which can meet the requirements of high power density and high efficiency.In practical battery charging applications,it is often necessary to face the problem of wide changes in output voltage and current.In order to keep the output stable,the hysteresis control strategy of LLC resonant converter suitable for battery charging is proposed.It has the advantages of simple implementation method,rapid response and wide output variation.The experimental results show that the hysteresis control has a good ability to adapt to a wide range of the output.

Key words: LLC resonant converter, hysteresis control, battery charging, control strategy

CLC Number:

TM46

JI Shengzhi, JIANG Haoran, LIU Shengyu. Digital Hysteresis Control Strategy for LLC Resonant Converter Suitable for Battery Charging[J]. LOW VOLTAGE APPARATUS, 2022, 0(5): 83-87.

Figures/Tables 9

References 7

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参数	数值
交流输入电压范围/V	176~264
电池额定电压/V	36
电池容量/Ah	80
开关频率/kHz	85~400

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