High Frequency Gap Losses in Nanocrystalline Cores

Yiren Wang; Gerardo Calderon-Lopez; Andrew Forsyth

doi:10.1109/TPEL.2016.2594083

High Frequency Gap Losses in Nanocrystalline Cores

Yiren Wang, Gerardo Calderon-Lopez, Andrew Forsyth

Research output: Contribution to journal › Article › peer-review

Abstract

Finite element analysis is used to examine the gap losses that occur in finely laminated nanocrystalline inductor cores under high-frequency operation. The losses are seen to be concentrated in the region of the air gap and the dependence of the losses on key design parameters and operating conditions is explored. The results show that gap losses can be significant in this type of core, creating hot spots around the gap, and the losses are not accurately predicted by established design equations for low-frequency laminated cores. A modified loss equation is proposed. Validation is provided by measurements on a 300-A, 60 kHz inductor.

Original language	English
Journal	IEEE Transactions on Power Electronics
Volume	32
Issue number	6
Early online date	30 Aug 2016
DOIs	https://doi.org/10.1109/TPEL.2016.2594083
Publication status	Published - Jun 2017

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title = "High Frequency Gap Losses in Nanocrystalline Cores",

abstract = "Finite element analysis is used to examine the gap losses that occur in finely laminated nanocrystalline inductor cores under high-frequency operation. The losses are seen to be concentrated in the region of the air gap and the dependence of the losses on key design parameters and operating conditions is explored. The results show that gap losses can be significant in this type of core, creating hot spots around the gap, and the losses are not accurately predicted by established design equations for low-frequency laminated cores. A modified loss equation is proposed. Validation is provided by measurements on a 300-A, 60 kHz inductor.",

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AU - Wang, Yiren

AU - Calderon-Lopez, Gerardo

AU - Forsyth, Andrew

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Y1 - 2017/6

N2 - Finite element analysis is used to examine the gap losses that occur in finely laminated nanocrystalline inductor cores under high-frequency operation. The losses are seen to be concentrated in the region of the air gap and the dependence of the losses on key design parameters and operating conditions is explored. The results show that gap losses can be significant in this type of core, creating hot spots around the gap, and the losses are not accurately predicted by established design equations for low-frequency laminated cores. A modified loss equation is proposed. Validation is provided by measurements on a 300-A, 60 kHz inductor.

AB - Finite element analysis is used to examine the gap losses that occur in finely laminated nanocrystalline inductor cores under high-frequency operation. The losses are seen to be concentrated in the region of the air gap and the dependence of the losses on key design parameters and operating conditions is explored. The results show that gap losses can be significant in this type of core, creating hot spots around the gap, and the losses are not accurately predicted by established design equations for low-frequency laminated cores. A modified loss equation is proposed. Validation is provided by measurements on a 300-A, 60 kHz inductor.

U2 - 10.1109/TPEL.2016.2594083

DO - 10.1109/TPEL.2016.2594083

M3 - Article

SN - 0885-8993

VL - 32

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

IS - 6

ER -

High Frequency Gap Losses in Nanocrystalline Cores

Abstract

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