Design Methodology Using Magnetic Equivalent Circuit for an Integrated Magnetics Structure
Neha Rajput (Indian Institute of Science)
Vishnu Mahadeva Iyer (Indian Institute of Science)
Gautham Ram Chandra Mouli (TU Delft - DC systems, Energy conversion & Storage)
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Abstract
The growing demand for compact, reliable, and high-efficiency power conversion systems has spurred the need for the development of power-dense magnetic solutions. This paper introduces a design algorithm utilizing an improved magnetic equivalent circuit (MEC) model for an integrated magnetic structure, which provides a more accurate and computationally efficient approach to capturing complex magnetic interactions. The proposed MEC-based design algorithm shows promising results in predicting the different reluctances, resulting in optimal magnetic design parameters. The effectiveness of the methodology is demonstrated through the design of an integrated structure for a 12.5kW, 50kHz dual-active bridge converter, wherein the energy-transfer series inductor and high-frequency transformer are seamlessly integrated into a single magnetic structure hereafter referred to as the Integrated Magnetic Transformer (IMTx).