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A Passive Three-Phase Rectifier Enhanced by a DC-Side High Switching Frequency Add-On SiC-Converter Stage for Unity Power Factor Applications
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| Author(s) |
Markus MAKOSCHITZ |
| Abstract |
Recent developments showed that existing passive three-phase rectifier circuits with DC-side located smoothing inductor can be extended to a low harmonic input stage by adding an additional converter stage on the DC-side of the passive rectifier system. In this paper an implementation of this converter stage using reduced number of semiconductors (only two half-bridges) is proposed. The system shows input current distortions which can be reduced considerably to values below 1\% if switching frequencies of 72kHz or above are used. A proper design of the injection chokes is thereto required and several operating modes and optimization possibilities are discussed. Design guidelines are verified by simulation results and a laboratory prototype based on a 10kW/72kHz rectifier system using SiC-MOSFETs. |
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| Filename: | 0427-epe2015-full-19305460.pdf |
| Filesize: | 1.241 MB |
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| Type |
Members Only |
| Date |
Last modified 2016-06-08 by System |
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