基于DSP+CPLD的LLC谐振变换器的研究  

Research of LLC Resonant Converter Based on DSP+CPLD

作　　者：胡显玉 

机构地区：[1]湖北工业大学太阳能高效利用湖北省协同创新中心,湖北武汉430068

出　　处：《数字技术与应用》2017年第9期80-83,共4页Digital Technology & Application

摘　　要：本文介绍了一种基于DSP+CPLD配合控制的LLC谐振全桥变换器,采用移相控制和调频控制相结合的方法,使得输出电压在全范围内可调。该设计方法能有效地减小变换器的体积,提高变换器的效率。并且控制回路具有功率器件驱动、保护和外部通讯功能。最后,在一台输入为DC 620(1±2.5%)V,输出为DC 400V/2694W的原理样机上验证了该混合控制方法的可行性以及电路参数设计的正确性。This paper presents a LLC resonant lull bridge converter based on DSP ＋CPLD coordinated control. A method combining phase shift control with frequency modulation control is adopted. The output voltage is adjustable in the whole range. The design method can effectively reduce the volume of the converter and improve the efficiency of the converter. And the control loop has power device drive, protection and external communication function.This paper developed a prototype machine with the input of 620（1 ± 2.5） %V DC,and the output of 400V / 2694W DC. The resuIt of the experiments verified the feasibility of the hybrid control method and the correctness of the circuit parameters.

关 键 词：LLC谐振变换器 移相 调频 混合控制 

分 类 号：TM46[电气工程—电器]