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Three-Phase Single-Stage Soft-Switching AC-DC Converter with Power Factor Correction
Three-Phase Single-Stage Soft-Switching AC-DC Converter with Power Factor Correction
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机译:具有功率因数校正的三相单级软开关AC-DC转换器
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摘要
Three-phase single-stage AC-DC converters achieve power factor correction with low phase voltage switch stress. Direct input current sensing is performed to calculate the average input current of the AC-DC converter and implement power factor correction. Embodiments feature high power factor, single stage power conversion, and soft-switching of all switches, resulting in high conversion efficiency in a cost-effective single-stage three-phase structure. The converters have low output voltage ripple without a double line frequency component, which allows non-electrolytic capacitor implementation. The converters are particularly useful in high-power applications such as electric vehicle charging.
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