Perforated-plate magnetics. II. Mode-2 inductor/transformer

• Published in: IEEE transactions on aerospace and electronic systems Vol. 31; no. 3; pp. 977 - 986
• Main Authors: Kirli, S., Ngo, K.D.T., Polivka, W.M., Walters, M.M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.07.1995; Institute of Electrical and Electronics Engineers
• Subjects: Analytical models; Applied sciences; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; Finite element methods; Guidelines; Inductance; Inductors; Magnetic analysis; Magnetic devices; Magnetic materials; Matrix converters; Switching converters; Power converters; Operation study; System architecture; Experimental test; Perforated plate; Theoretical study; Performance analysis; Power transformer; Modeling; Electrical characteristic; Matrix circuit; Method study
• ISSN: 0018-9251; 1557-9603
• DOI: 10.1109/7.395242

As the Mode-1 perforated-plate matrix transformer/inductor (M1PPMT), the Mode-2 perforated-plate matrix inductor/transformer (M2PPMI) is attractive for the construction of low-profile inductors and transformers for switched-mode power converters. Finite-element simulation suggests that the M2PPMI may be approximated as weakly coupled "U-cores". Conventional inductance formulae for U-cores, however, can underestimate the inductance of the M2PPMI by as much as 50%, the error source being the magnetic material in the winding windows. An analytical approach to model the inductance of the M2PPMI is presented here. The approach is guided by finite-element simulation, and has been verified experimentally. It suggests design guidelines for practical applications of perforated-plate magnetic devices.< >