基于STM32F405的低压大电流直流电源设计  

Low Voltage Large Current DC Power Supply Design Based on the STM32F405

作　　者：罗耀华[1] 李景恒 闻婷[1] 霍金秋 

机构地区：[1]哈尔滨工程大学,黑龙江哈尔滨150001 [2]哈尔滨船舶锅炉涡轮机研究所,黑龙江哈尔滨150001

出　　处：《电力电子技术》2014年第1期63-65,共3页Power Electronics

基　　金：国家海洋可再生能源专项资金项目(GHME2010GC02)~~

摘　　要：根据某地面特种车辆车载装置需要低电压大电流输出直流电源的要求,介绍了一种基于移相全桥变换器,以STM32F405为控制核心的直流电源。针对低压大电流输出直流电源在空载情况下突加负载时输出电压有较大跌落的问题,根据稳态工作时负载电流和移相角的关系,对传统的电压电流双闭环控制策略进行改进。实验结果表明改进后的控制策略加快了系统的动态响应,有效地减小了突加负载时输出电压的跌落。According to the output low voltage and high current requirements of a DC power supply which is used on the vehicle borne device of a certain special terrain-vehicle, a DC power supply based on phase-shifting full-bridge converter and controlled by chip of STM32F405 is introduced.Focus on the problem of a serious voltage drop when the load is suddenly increased from the condition of no-load, and then on the basis of the relationship between steady state load current and shift angle, an improved control strategy based on the traditional dual-loop control is proposed. Experimental results indicate that with this improved control strategy, the system dynamic response is improved, be- sides, the under-shoot voltage for load-mutation is decreased effectively.

关 键 词：直流电源 移相全桥 双环控制 

分 类 号：TN86[电子电信—信息与通信工程]