摘要
随着工业电源功率不断增大,电源效率已成为一个主要指标。针对电镀行业大功率电源稳定、可靠、灵活的要求,设计了一种全桥移相控制软开关DC/DC数字化电源。通过Matlab/simulink建立了主电路仿真模型,仿真分析了超前桥臂和滞后桥臂实现零电压开关的设计原理,并对其进行了验证,同时采用TMS320F2812作为主控芯片,IGBT作为主开关,试制了一台24kW/20kHz的样机,实现了数字移相控制及全桥变换零电压软开关,实验波形验证控制方案的正确性与有效性。
As the power of industrial power supplies increases, power efficiency becomes a major indicator. According to the stable, reliable and efficient requirements on high electroplating power supplies, a soft switch DC/DC converter based on full-bridge phase-shifted control is designed; a simulation model of main circuit is established via the simulation software of Matlab/simulink; and the design principle of realizing ZVS in ahead bridge and lagging bridge is analyzed by simulation and proved. At the same time,with TMS320F2812 as main control chip and IGBT as main switch, a 24 kW/20 kHz prototype is developed, realizing digital phase-shifted control and full-bridge zero voltage converting soft switch. The experimental waveforms have proved the correctness and validity of the control scheme.
出处
《电镀与环保》
CAS
CSCD
北大核心
2013年第1期36-39,共4页
Electroplating & Pollution Control
关键词
移相控制
软开关
数字控制
电镀电源
phase-shifted control
soft switch
digital control
electroplating power supply
