Scholarlink

Three-phase AC-AC converters, for power conversion from a three-phase mains system to a three-phase load with an arbitrary voltage amplitude and frequency, have been widely used in many fields such as ASDs, marine electric propulsion, WECS, FACTS, and so on. Desirable features in such systems mainly include simple and compact structure, sinusoidal input and output currents, bidirectional power flow, operation with unity power factor for any load, long-term reliability, and regeneration capability. Different from traditional back-to-back converters, MCs, as an array of controlled semiconductor switches, can inherently satisfy the above characteristics. Thereby, the emerging topology that achieves direct AC-AC power conversion without DC-link energy storage elements has gradually gained prominence.

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Introduction

  • 章节

  • 发表日期：

    2025年

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  • Hui Wang

摘要

Three-phase AC-AC converters, for power conversion from a three-phase mains system to a three-phase load with an arbitrary voltage amplitude and frequency, have been widely used in many fields such as ASDs, marine electric propulsion, WECS, FACTS, and so on. Desirable features in such systems mainly include simple and compact structure, sinusoidal input and output currents, bidirectional power flow, operation with unity power factor for any load, long-term reliability, and regeneration capability. Different from traditional back-to-back converters, MCs, as an array of controlled semiconductor switches, can inherently satisfy the above characteristics. Thereby, the emerging topology that achieves direct AC-AC power conversion without DC-link energy storage elements has gradually gained prominence.