Feasibility Study of Compact High-efficiency Bidirectional 3-Level Bridgeless Totem-pole PFC/Inverter at Low Cost

2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI:10.1109/APEC39645.2020.9124152

T. T. Vu, Rytis Beinarys

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引用次数: 4

Abstract

Bidirectional converters are increasingly being used in electric vehicle chargers and self-consumption for residential/communities with energy-storage capabilities. Among existing bidirectional solutions, bridgeless totem-pole arrangement has been of great interest to both academia and industry due to its advantages of enabling ultra-high efficiency, i.e. above 99%, at low complexity. However, until now most research and development have mainly focused on AC/DC power factor correction (PFC) applications of the bridgeless totem-pole topology with very little effort to understand the practicality and performance of the converter in generation mode, i.e. DC/AC power inversion. Therefore, this article discusses the feasibility of the 3-level bridgeless totem-pole arrangement used as a DC/AC inverter in either islanded or grid-tied operation. This work is experimentally validated by a 3kW bidirectional PFC/Inverter prototype in a compact format of 41mm x 302mm x 1U with peak efficiency exceeding 99% at 230V for all operating modes.

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小型高效双向低成本3级无桥图腾杆PFC/逆变器可行性研究

双向转换器越来越多地用于电动汽车充电器和具有储能能力的住宅/社区的自消费。在现有的双向解决方案中，无桥图腾柱排列由于其在低复杂性下实现超高效率(即99%以上)的优势而引起了学术界和工业界的极大兴趣。然而，到目前为止，大多数研究和开发主要集中在无桥图腾极拓扑的AC/DC功率因数校正(PFC)应用上，很少努力了解变换器在发电模式下的实用性和性能，即DC/AC功率反转。因此，本文讨论了在孤岛或并网运行中作为直流/交流逆变器的3级无桥图腾柱布置的可行性。这项工作通过3kW双向PFC/逆变器原型机进行了实验验证，该原型机的紧凑格式为41mm x 302mm x 1U，在所有工作模式下，在230V下的峰值效率超过99%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

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