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Simplified Carrier-Based Modulation Scheme for Three-Phase Three-Switch Rectifier
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DOI：10.1109/TIA.2018.2879298.png)
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Abstract
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The three-phase three-switch (TPTS) converter has been used as the rectifier front-end stage for telecom power supplies. The space vector (SV)-based modulation technique has been the preferred choice for the operation and control of the TPTS converter. This paper introduces a simplified carrier-based modulation scheme, which can be implemented on inexpensive digital controllers without dealing with complex trigonometric equations. A comprehensive comparison between the traditional SV modulation scheme and the proposed carrier-based technique is presented with respect to the resource utilization on a digital controller. The procedure followed to obtain the carrier wave used in the proposed modulation scheme is explained. A 1 kW hardware prototype was built to validate the modulation scheme.
Keywords:
AC-DC power converters
rectifiers
space vector pulsewidth modulation
three-phase electric power
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