基于TMS320F28335的恒流型馈能式电子负载的设计  

Design of a kind of constant-current energy-feedback electric load based on TMS320F28335

作　　者：张胜高[1] 张庆范[1] 王思尧[1] 侯典立[1] 

机构地区：[1]山东大学,山东济南250061

出　　处：《电子设计工程》2012年第10期103-105,109,共4页Electronic Design Engineering

基　　金：山东省科技发展项目(2011GGX10126)

摘　　要：针对电源设备出厂老化测试电能浪费问题,设计了一种基于TMS320F28335DSP的恒流型馈能式电子负载。描述了一种原边带箝位二极管的ZVS移相全桥变换器的工作特点,采用了一种简便易行的移相波形数字控制方法 ;基于DC/DC电压前馈、DC/AC电压电流双环控制方法,研制出一台3.5 kW试验样机。实验结果表明:该系统性能稳定、调节速度快,能很好地满足测试老化及馈网要求。In order to solve the energy-wasting problem of power devices in the process of burn-in test, a kind of constant- current energy-feedback electric load based on TMS320F28335DSP is designed. It describes the operating feathers of a phase shifting full bridge ZVS PWM converter with clamping diodes in the primary side of transformer; and a feasible phase shifting PWM wave digital control method is adopted. Based on the method of voltage feed-forward in DC/DC, and current-voltage dual loop control in DC/AC, a 3.5 kW electric load is made. The test results show that this device has stable performance, fast corresponding speed, and can meet the requirements of burn-in test and grid feedback.

关 键 词：电子负载 移相全桥ZVS 箝位二极管 TMS320F28335 

分 类 号：TM46[电气工程—电器]