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Analysis, design, and minimum phase selection of high power interleaved DC–DC converter
International Journal of Circuit Theory and Applications ( IF 2.3 ) Pub Date : 2022-09-06 , DOI: 10.1002/cta.3409
Guttula Yedukondalu 1 , Susovon Samanta 2 , Mahendra Joshi 1
Affiliation  

The primary use of interleaved bidirectional DC–DC converters (IBC) is for high current applications due to the inherent property of ripple cancellation, high redundancy, and improved efficiency. Proper analysis and design are required to improve the power density and reduce the cost of the N-phase IBC. Ripple current analysis plays a vital role in choosing the inductor and filter capacitors to minimize the size of an IBC. This paper presents the simple and generalized formulas for the current ripple minimization of N-phase IBC. Also, the inductor is designed with two different core materials, namely, Ferrite and Sendust. It is observed that the area product and weight of the magnetics have been reduced by 22% and 23%, respectively, for Sendust core in comparison with the Ferrite core. Furthermore, a discussion regarding the thermal analysis of IGBT modules to select an appropriate heat sink is stated. Moreover, the minimum phase selection has been proposed by considering several constraints such as area product of the core, discrete components size based on ripple analysis, cost of all components, and converter efficiency. The prototype of the selected minimum phase IBC has been developed and tested for a 7.5 kW power level using TMS320F28335.

中文翻译:

大功率交错式DC-DC变换器分析、设计及最小相位选择

交错式双向 DC-DC 转换器 (IBC) 的主要用途是用于大电流应用,因为它具有消除纹波、高冗余和提高效率的固有特性。需要适当的分析和设计来提高功率密度和降低成本-相 IBC。纹波电流分析在选择电感器和滤波电容器以最小化 IBC 的尺寸方面起着至关重要的作用。本文介绍了电流纹波最小化的简单通用公式-相 IBC。此外,电感器设计有两种不同的磁芯材料,即铁氧体和铁硅铝。据观察,与铁氧体磁芯相比,铁硅铝磁芯的面积积和磁体重量分别减少了 22% 和 23%。此外,还讨论了有关 IGBT 模块的热分析以选择合适的散热器。此外,通过考虑多个约束条件(例如核心面积积、基于纹波分析的分立元件尺寸、所有元件的成本和转换器效率),提出了最小相位选择。已使用 TMS320F28335 针对 7.5 kW 功率级别开发并测试了所选最小相位 IBC 的原型。
更新日期:2022-09-06
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