摘要
双有源桥(DAB)DC-DC变换器的磁平衡通常由变压器原副边串联隔直电容来实现,这种方法增加了电路体积和损耗,尤其在大电流输入或输出场合。通过对DAB变换器工作原理的分析,提出了一种应用滞环控制的微调变压器原边开关管占空比的主动控制方法来实现变压器和电感的磁平衡,克服实际电路中寄生参数及偏差引起的磁偏问题。仿真和试验验证了该方案的有效性,可用于DAB变换器在无隔直电容情况下的磁平衡控制。
The magnetic balance of bidirectional dual active bridge（DAB）DC-DC converter is usually achieved by series the DC blocking capacitors on both sides of the transformer.But this method increases both the converter′s volume and power losses,especially in conditions of high current inputs or outputs.Based on the analysis of the operating principle of DAB converter,a hysteresis control method is proposed to achieve magnetic balance by changing the duty cycle of switches in the primary side slightly.The simulation and experiment results verify the effectiveness of the method.It can be used for the magnetic balance control of DAB converter in the absence of DC blocking capacitors.
作者
王天威
邵帅
张军明
WANG Tianwei;SHAO Shuai;ZHANG Junming(Zhejiang University,Hangzhou 310027,China)
出处
《电工技术》
2018年第11期37-39,42,共4页
Electric Engineering
基金
光宝电力电子技术科研基金
