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Zero-Crossing Distortion in Grid-Coupled AC-DC Converters
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| Author(s) |
RYCKAERT Wouter; MELKEBEEK Jan; DE GUSSEME Koen; DE VLEESCHAUWER Vera; VAN DE SYPE David |
| Abstract |
Zero-crossing distortion in modern rectifiers and inverters may have different causes: the commutation dead time, the use of diode bridge rectifiers, discontinuities in the PWM-generation. . . In this paper another cause of zero-crossing distortion is analysed: when a security dead time is inserted between the gate signals of two switches in the same leg, some line current distortion may appear close to the zero-crossing of the line current due to errors in the sampling of that line current. An overview of the sampling requirements for a digitally controlled full-bridge ac-dc converter is given and a detailed analysis of the line current distortion is performed. The analysis is verified with experimental waveforms and a solution is proposed to decrease the linecurrent distortion. |
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| Filename: | 0560 |
| Filesize: | 405 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-05 by System |
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