Auxiliary Power Supply for Medium-Voltage Power Converters: Topology and Control

Auxiliary Power Supply for Medium-Voltage Power Converters: Topology and Control
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中压电源转换器的辅助电源:拓扑和控制

DOI:
10.1109/tia.2019.2915511
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发表时间:
2019
影响因子:
4.4
通讯作者:
Lukic, Srdjan M.
Lukic, Srdjan M.
中科院分区:
工程技术2区
文献类型:
--
作者:
Won, Jehyuk;Jalali, Gholamreza;Liang, Xinyu;Zhang, Chi;Srdic, Srdjan;Lukic, Srdjan M.

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本文提出了一种用于中压电力电子系统的隔离辅助电源。所提出的转换器包括两级:直接连接到中压线路的非隔离式交流/直流级,以及隔离式直流/直流级,在 24V 电压下提供 100W 输出功率,隔离电压为 10kV。所提出的模块化交流/直流级每个模块仅使用一个有源半导体器件,具有内部电容器电压平衡,并通过采用预测电流控制实现功率因数校正。与传统的基于低频变压器的方法相比,两个转换器级的高开关频率操作可以减小系统尺寸和重量。对所提出的转换器进行了仿真,并在 100W 原型上通过实验验证了其运行情况。
This paper presents an isolated auxiliary power supply for medium-voltage power electronics systems. The proposed converter comprises two stages: a non-isolated ac/dc stage that connects directly to the medium-voltage line, and an isolated dc/dc stage that provides 100-W output power at 24 V, with 10 kV isolation. The proposed modular ac/dc stage uses just one active semiconductor device per module, features an internal capacitor voltage balancing, and achieves power factor correction by employing predictive current control. High switching frequency operation of both converter stages enable a reduction in system size and weight when compared to traditional low-frequency transformer-based approach. The proposed converter is simulated and its operation is validated experimentally on a 100-W prototype.
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DOI: --
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