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Analysis and Design of Snubber Circuit for Z-source Inverter
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| Author(s) |
Shuai DONG, Qianfan ZHANG, Chaowei ZHOU, Shukang CHENG |
| Abstract |
The Z-Source Inverter (ZSI) is a novel and attractive topology for an power electronic interface. Shoot-through states are utilized to boost the DC bus voltage, which also differentiates the working process of the snubber circuit from that of a Voltage Source Inverter (VSI). It was found that there would be a distortion in the DC link voltage of four traditional snubber circuits, and that this voltage would increase more than it would have without the snubber circuit. Compared with a VSI, larger energy losses would be generated in this situation due to the shoot-through state. This paper presents an improved RCD snubber circuit for ZSI applications, which resolves the problems of voltage distor-tion and large energy losses. These theoretical findings and design guidelines for snubber circuits with a ZSI were then verified by computer simulation and experiment. |
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| Filename: | 0283-epe2014-full-10442475.pdf |
| Filesize: | 388.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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