LLC谐振恒流恒压高压充电电源技术研究  

Research on LLC Resonant Constant Current Constant Voltage High Voltage Charging Power Supply Technology

作　　者：黄毛毛[1,2,3] 李瑞 李德明 魏居魁[4] 武万锋 HUANG Maomao;LI Rui;LI Deming;WEI Jukui;WU Wanfeng(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201064,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China;Nanjing FSP-Powerland Technology Inc.,Nanjing 210014,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201064 [2]中国科学院大学,北京100049 [3]中国科学院上海高等研究院,上海201210 [4]南京博兰得电子科技有限公司,江苏南京210014

出　　处：《原子能科学技术》2019年第9期1588-1594,共7页Atomic Energy Science and Technology

基　　金：国家重点研发计划资助项目(2016YFA0401902)

摘　　要：高压充电电源输出电压的稳定性是脉冲调制器的关键技术指标,需对其进行研究,以提高其输出稳定性。基于激磁电感、谐振电感、谐振电容(LLC)谐振变换器的工作原理,根据LLC等效电路得到了LLC谐振电路的电压增益曲线,分析了LLC谐振变换器工作区间的特性,提出了平面绝缘芯变压器的选择依据和设计方法,通过测量实际变压器得到变压器的参数;根据变压器参数选择了LLC谐振变换器谐振频率和工作频率,并通过LLC谐振变换器电路的推导,详细计算了高压充电电源输出电压的纹波幅值。结果显示,计算结果优于设计指标。经实验验证,叠层磁芯LLC谐振变换器高压充电电源的稳定性能达到了设计要求。The output voltage stability of high voltage charging power supply is the key technical index of pulse modulator.It is necessary to study and improve the output stability of high voltage charging power supply.Based on the working principle of LLC resonant converter composed of magnetizing inductance,resonant inductor and resonant capacitor,the voltage gain curve of LLC resonant circuit was obtained according to LLC equivalent circuit,the characteristics of LLC resonant converter working mode were analyzed,and the selection criteria and design method of planar insulated core transformer were proposed.The inductance parameters of transformer were obtained by measuring the actual transformer.The resonant frequency and the working frequency values of LLC resonant converter were selected,and the ripple amplitude of output voltage of high voltage charging power supply was calculated in detail according to the circuit principle of LLC resonant converter.The stability result is better than the design index of high voltage charging power supply.The experimental results show that the LLC resonant converter with laminated magnetic core meets the design stability requirements.

关 键 词：高压充电电源 平面变压器 LLC谐振变换器 高稳定性 

分 类 号：TL99[核科学技术—核技术及应用]