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Three-port bidirectional converter for electric vehicles: focus on high-frequency coaxial transformer

机译：电动汽车三端口双向转换器：专注于高频同轴变压器

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摘要

A bidirectional multi-port converter can accommodate various energy storages and sources. Therefore, a multiport converter will be a good candidate for application as a future universal converter for (hybrid) electrical vehicles or local distribution systems. The main design challenge of the multiport converter analyzed in this paper is the design of its three-phase symmetrical transformer. In this converter symmetry of the leakage inductances is essential to ensure balanced three-phase currents (transferred power). These currents are interconnected by three-phase bridges which are linked together by a three-phase, three-port, transformer. To realize the equality of the leakage inductances a specific transformer design is necessary. Since conventionally wound three-phase transformer core shapes suitable for high-frequency are expensive and difficult to build, a coaxial wound transformer will be designed in this paper.
机译：双向多端口转换器可容纳各种能量存储和能源。因此，多端口转换器将成为未来（混合动力）电动汽车或本地配电系统通用转换器的理想选择。本文分析的多端口转换器的主要设计挑战是其三相对称变压器的设计。在此转换器中，泄漏电感的对称性对于确保平衡的三相电流（转移的功率）至关重要。这些电流通过三相桥互连，该三相桥通过三相三端口变压器连接在一起。为了实现漏感的相等，必须使用特定的变压器设计。由于传统上适合于高频的绕线式三相变压器铁心形状昂贵且难以制造，因此本文将设计同轴绕线式变压器。

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