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首页> 外文会议>International Conference on Power Electronics and ECCE Asia >Voltage Unbalance Compensation Method with Zero Voltage Switching for Series Connected Switching Devices
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Voltage Unbalance Compensation Method with Zero Voltage Switching for Series Connected Switching Devices

机译：用于串联连接的开关装置的零电压切换的电压不平衡补偿方法

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摘要

This paper proposes a voltage unbalance compensation method of series-connected switching devices for high voltage application such as DC distribution systems. In the series connection, a turn-off voltage unbalance occurs in switching devices due to a parasitic parameter mismatch and a switching timing mismatch among switching devices. In this paper, a capacitor snubber and Zero Voltage Switching (ZVS)operation are utilized to reduce voltage unbalance. In particular, the proposed method reduces the parasitic capacitor (collector-emitter capacitance)mismatch among series-connected devices by a capacitor snubber circuit, whereas the switching losses are effectively reduced by ZVS. As the simulation results, it is confirmed that the collector-emitter voltage unbalance is reduced by 88% by the proposed method in comparison with a snubber-less configuration. Finally, in order to confirm the effectiveness of the proposed method, experiments with a test circuit applied with the proposed method are conducted. According to the experimental results, the voltage unbalance is reduced by 86.0% due to the application of the proposed method.
机译：本文提出了用于高压应用的串联连接装置的电压不平衡补偿方法，例如DC分配系统。在串联连接中，由于寄生参数错配和开关装置之间的切换定时不匹配，在开关装置中发生关闭电压不平衡。在本文中，利用电容器缓冲器和零电压切换（ZVS）操作来减少电压不平衡。特别地，所提出的方法通过电容器缓冲电路减少串联连接设备之间的寄生电容（集电极发射器电容）不匹配，而通过ZVS有效地减少了开关损耗。随着仿真结果，通过与缓冲器的配置相比，通过所提出的方法确认收集器 - 发射极电压不平衡减少了88％。最后，为了确认所提出的方法的有效性，进行了用所提出的方法施加的测试电路的实验。根据实验结果，由于应用方法，电压不平衡降低了86.0％。

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