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首页> 外文期刊>Industrial Electronics, IEEE Transactions on >Robust Circuit Parameters Design for the CLLC-Type DC Transformer in the Hybrid AC–DC Microgrid
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Robust Circuit Parameters Design for the CLLC-Type DC Transformer in the Hybrid AC–DC Microgrid

机译:交直流微电网中CLLC型直流变压器的稳健电路参数设计

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摘要

CLLC-type dc transformer (CLLC-DCT) is very popular in the hybrid ac-dc microgrid thanks to its high-power density advantage and good bidirectional power transfer capacity. In the hybrid ac/dc microgrid, the open-loop control is always utilized by the CLLC-DCT to cooperate with the bidirectional interlinking converter to realize the power and voltage conversion between the ac and dc bus. This paper first studies the circuit parameters design of the open-loop controlled CLLC-DCT with consideration of such a realistic problem: The real inductors/capacitors values are actually different with their theoretically designed values due to the operation power and temperature variation. To solve this problem, a robust circuit parameters design scheme is proposed for the CLLC-DCT in this paper. With the proposed scheme, the designed CLLC-DCT exhibits good power transmission and voltage regulation ability in the hybrid ac/dc microgrid even when its actual inductors/capacitors values vary with the practical power and temperature. The robust design method is experimentally verified in a hybrid ac/dc microgrid prototype.
机译:由于具有高功率密度优势和良好的双向电力传输能力,CLLC型直流变压器(CLLC-DCT)在混合型ac-dc微电网中非常受欢迎。在交流/直流混合微电网中,CLLC-DCT始终利用开环控制与双向互连转换器配合使用,以实现交流和直流总线之间的功率和电压转换。本文首先考虑了这样一个现实的问题,研究了开环控制CLLC-DCT的电路参数设计:由于工作功率和温度变化,实际的电感器/电容器值实际上与理论设计值有所不同。为了解决这个问题,本文提出了一种健壮的CLLC-DCT电路参数设计方案。通过提出的方案,即使当其实际电感器/电容器值随实际功率和温度而变化时,所设计的CLLC-DCT在交流/直流混合微电网中仍具有良好的功率传输和电压调节能力。鲁棒的设计方法已在交流/直流微电网原型中经过实验验证。

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