稀土电解电源DC/DC变换器的研究  

Research on DC/DC Converter for Rare Earth Electrolysis Power

作　　者：姚建红[1] 高原[1] 张秋月 冯兴海 

机构地区：[1]东北石油大学,黑龙江大庆163318 [2]哈尔滨电工仪表研究所,黑龙江哈尔滨150028 [3]哈尔滨中兴自动化设备有限公司,黑龙江哈尔滨150090

出　　处：《电力电子技术》2013年第9期96-97,100,共3页Power Electronics

摘　　要：针对传统稀土电解电源DC/DC变换器滞后桥臂不易实现零电流开关(ZCS)的缺点,提出了一种变压器初级串联饱和电感和阻断电容,次级采用无源箝位电路的改进型移相全桥零电压零电流开关(PS-FB-ZVZCS)DC/DC变换器,并对该变换器的工作原理及各工作模态进行了详细分析。理论分析表明,该电路拓扑结构可在宽范围内实现PS-FB-ZVZCS,并有效降低了次级整流二极管的电压应力及辅助电路的损耗。研制了一台12V/1.7 kA的稀土电解电源工程样机,通过实验验证了该变换器滞后桥臂能在较宽的负载范围内实现ZCS。Lagging-leg for conventional rare earth electrolysis power DC/DC converter is difficult for achieving zero current switching （ZCS）.A modified phase-shift full-bridge zero voltage zero current switching （PS-FB-ZVZCS） DC/DC converter is proposed by using saturation inductance, blocking-up capacitance and passive clamp circuit.The principle and operation modes of the converter are analyzed.Theoretical analysis shows that the proposed circuit topology can achieve PS-FB-ZVZCS in a wide load range and reduce the diode voltage stress in secondary side.Rare earth electrol- ysis power model machine with 12 V/1.7 kA is developed and experiment proves that lagging-leg of the converter achieves ZCS in a wide load range.

关 键 词：电源 移相全桥变换器 零电流开关 

分 类 号：TN86[电子电信—信息与通信工程]