一种改进的谐振型通信电源设计方法——基于时域限制条件的LLC谐振变换器设计  

An improved design method of resonant communication power supply: Design of LLC resonant converter based on time domain analysis

作　　者：郭稳涛[1] 何怡刚[2] 

机构地区：[1]湖南机电职业技术学院,湖南长沙410151 [2]湖南大学,湖南长沙410082

出　　处：《电源技术》2012年第12期1925-1927,1937,共4页Chinese Journal of Power Sources

基　　金：国家杰出青年科学基金(50925727);国家自然科学基金项目(6087602);湖南省高等学校科学研究项目(12c1068)

摘　　要：通信电源在控制系统中占据十分重要的位置,由于通信电源输入直流电压在360 V以上,同时还要满足一定的掉电保持需要,因此业界普遍采用LLC串并联谐振变换器作为谐振型通信电源的功率拓扑。针对LLC谐振变换器设计方法中存在的不足之处,提出了一种改进的基于时域限制条件的设计方法,首先通过时域分析,分别得到励磁电感和品质因数的限制条件,并在此限制条件的基础上通过仿真实验进行参数扫描以获得符合条件的谐振腔参数,最后通过300W样机实验验证了该设计方法的有效性和准确性。Communication power supply is very important for control system. Because the input voltage of communication power supply system is above 300 V, meanwhile the power supply should meet the requirement of hold up time, and LLC resonant converter is widely used in industry as the power topology of resonant communication power supply. According to the shortcomings of present design method of LLC resonant converter, an improved design method based on time domain analysis was proposed. Firstly, the limitation of magnetizing inductance and quality factor by time domain analysis was gotten. And then the parameter sweep by simulation was done to get appropriate parameters of the resonant tank based on the time domain limitation. Finally, a three-hundred-watt prototype was build to verify the effectiveness and accuracy of the proposed design method.

关 键 词：通信电源 LLC谐振变换器 时域分析 谐振腔设计 

分 类 号：TM131.4[电气工程—电工理论与新技术]