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A Four-level pi-type Converter for Low-voltage Applications
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| Author(s) |
XIBO YUAN |
| Abstract |
This paper has introduced a four-level p-type converter for low-voltage applications which has a simple structure with six switches per phase leg. The line output voltage has seven levels and the output harmonics is much lower than the conventional two-level converter. The switching states and their associated output voltage levels have been analyzed. A simple carrier-based modulation method with zero-sequence signal injection has been devised to modulate the converter and regulate dc-link neutral points' voltages. The two neutral points' voltages can be well controlled with a back to back configuration even under high modulation index and high power factor. Simulation and experimental results have validated the topology, modulation and control strategy for the four-level p-type converter. |
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| Filename: | 0237-epe2015-full-11161618.pdf |
| Filesize: | 371.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-06-08 by System |
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