一种用于高压电力电子开关的新型多路输出隔离供电系统

A Novel Multi-Output Isolation Power Supply System for High Voltage Power Electronic Switch

为了改善目前电力电子开关在高电压等级下隔离变压器数量过多、传统多路供电系统过于庞大的问题,提出了一种新型的多路输出隔离供电系统。采用变压器松耦合技术,为该多路隔离供电系统设计了一种新型电路拓扑结构,推导了其参数计算公式,对关键参数进行了选值与优化,并在需要20路输出供电的串联IGBT电力电子开关电路中进行了实验验证。实验结果表明:在满载情况下,供电电路的输出电压稳定在18V,可以为20路电力电子开关稳定供电;系统在缩小体积和空间的基础上实现了高电压隔离,隔离直流电压高达30kV,并且此系统能够拓展至更多电力电子开关串联应用中。实验证明了该供电系统的实用性和设计方法的可行性。

To solve the problem electronic switch at high voltage that too many isolation transformers are requlreo for power level, leading to excessive scale of traditional multi-channel power supply system, a new type of multiple output isolation power supply system is proposed, in which a novel circuit topology is designed based on transformer loose coupling technology. The calculation formula of the parameters is derived, and the key parameters are selected and optimized. The experimental verification is carried out on a series IGBT power electronic switching circuit which needs 20-way output power supplies. The experimental results show that： in the case of full load, the output voltage of the power supply circuit is stable at 18 V, and the system can stably supply power for the 20-way power electronic switches. The system realizes the high voltage isolation in reduced volume and space, and the isolated voltage reaches DC 30 kV. The system can be extended to more power electronic switches in series.