Study of Toroidal Core Multilimb Transformer (TCMLT) for High-Power DC Application
Study of Toroidal Core Multilimb Transformer (TCMLT) for High-Power DC Application
复制标题
大功率直流应用环形铁心多柱变压器（TCMLT）的研究
DOI：
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发表时间：
2021
影响因子：
5.5
通讯作者：
Abdar Ali
中科院分区：
文献类型：
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作者：
Yaqoob Ali;Yan Zheng;Muhammad Mansoor Khan;Liang Ji;Abdar Ali
多模块隔离型变换器具有良好的电流隔离、双向潮流、控制简单等特点，广泛应用于中压大功率dc-dc应用中。然而，在电隔离级联dc-dc变换器中，变换器的尺寸和直流链路电容电压平衡是一个重要的问题。本文提出了一种采用环形铁芯的集成变压器的新设计，称为环形铁芯多肢变压器（tmlt），用于dc-dc模块化隔离双向双有源桥（IB-DAB）谐振变换器拓扑结构。所提出的变压器的模块化设计结构可以方便地构建和实现更多的符合紧凑性约束的参与模块。此外，在TCMLT结构中实现了外部耦合绕组，以解决直流链路电压平衡问题。这种耦合绕组方法代替了昂贵的复杂控制电路，从而降低了成本，提高了可靠性。此外，还对该结构的磁阻模型进行了分析。基于磁阻模型，实现了一种共模-差模（CM-DM）电路。在此基础上，提出了一种环形多肢变压器（MLT）结构的综合方法，与传统的U、UI和EI铁芯实现方法不同。与传统u芯MLT的比较研究证实，该设计具有更小的漏感和显著的尺寸减小。最后，为了验证tmlt的有效性，在一个6kw级联IB-DAB谐振变换器拓扑结构中使用了一个三肢实验室规模的原型。
Multimodule isolated converters incorporating excellent features of galvanic isolation, bidirectional power flow, and simple control are widely adopted in medium-voltage (MV) high-power dc–dc applications. However, the converter size and dc-link capacitor voltage balancing are significant concerns in galvanically isolated cascaded dc–dc converters. This article proposes a new design of an integrated transformer implementing toroidal cores named toroidal core multilimb transformer (TCMLT), employed in a dc–dc modular isolated bidirectional dual-active-bridge (IB-DAB) resonant converter topology. The modular design structure of the proposed transformer can be conveniently constructed and implemented for more number of participating modules conforming the compactness constraint. Moreover, an external coupling winding is implemented in the TCMLT structure to resolve the dc-link voltage balancing issue. This coupling winding method substitutes the expensive complex control circuits, which consequently results in cost reduction and reliability enhancement. Besides, the reluctance model of the proposed structure is analyzed. Based on the reluctance model, a common mode–difference mode (CM-DM) electrical circuit is realized for the proposed scheme. Furthermore, unlike the conventional approach of implementing U, UI, and EI cores for multilimb transformer (MLT) structure with separate limbs, a synthesis method of TCMLT in toroidal form is proposed. The comparative study of the proposed design with the conventional U-core MLT confirms that the proposed TCMLT offers less leakage inductance with significant size reduction. Finally, to validate the efficacy of TCMLT, a three-limb laboratory-scale prototype is employed in a 6-kW cascaded IB-DAB resonant converter topology.
具有解耦控制方案的高频多端口固态变压器的设计与开发
影响因子：
4.4
作者：
Rashidi, Mohammad;Altin, Necmi N.;Ozdemir, Saban S.;Bani-Ahmed, Abedalsalam;Nasiri, Adel
通讯作者：
Nasiri, Adel
MPSST应用的多绕组高频变压器的设计与实现
DOI：
10.1109/icrera.2017.8191108
发表时间：
2017
期刊：
2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA
影响因子：
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作者：
Rashidi, Mohammad;Bani-Ahmed, Abedalsalam;Nasiri, Robabeh;Mazaheri, Azadeh;Nasiri, Adel
通讯作者：
Nasiri, Adel