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Coupled Inductor Characterization for a High Performance Interleaved Boost Converter

机译：高性能交错式Boost转换器的耦合电感特性

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摘要

Interleaved power converter topologies have received increasing attention in recent years for high power and high performance applications. The advantages of interleaved boost converters include increased efficiency, reduced size, reduced electromagnetic emission, faster transient response, and improved reliability. The front end inductors in an interleaved boost converter are magnetically coupled to improve electrical performance and reduce size and weight. Compared to a direct coupled configuration, inverse coupling provides the advantages of lower inductor ripple current and negligible dc flux levels in the core. In this paper, we explore the possible advantages of core geometry on core losses and converter efficiency. Analysis of FEA simulation and empirical characterization data indicates a potential superiority of a square core, with symmetric 45$^{circ}$ energy storage corner gaps, for providing both ac flux balance and maximum dc flux cancellation when wound in an inverse coupled configuration.
机译：近年来，对于高功率和高性能应用，交错式功率转换器的拓扑结构越来越受到关注。交错式升压转换器的优点包括效率提高，尺寸减小，电磁辐射减小，瞬态响应更快以及可靠性提高。交错式升压转换器中的前端电感器磁耦合以改善电气性能并减小尺寸和重量。与直接耦合配置相比，反向耦合具有较低的电感纹波电流和可忽略的铁心直流磁通水平的优势。在本文中，我们探索了磁芯几何形状对磁芯损耗和转换器效率的可能优势。对FEA仿真和经验表征数据的分析表明，方形铁芯具有对称的45°^储能角间隙，在以反耦合配置缠绕时，既可以提供交流磁通量平衡又可以消除最大直流磁通量，具有潜在的优越性。

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