High frequency loss measurement apparatus and methods for inductors and transformers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8823370
APP PUB NO 20130049744A1
SERIAL NO

13222235

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Abstract

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Core loss in an inductor is measured with reduced sensitivity to phase measurement error by connecting a reactive component to resonate with the inductor and thus cancel a portion of the reactive voltage on the inductor; reducing the phase difference between the inductor voltage and current and making the observed power more resistive. The reactive component may be a capacitor for sinusoidal excitation or an inductance such as an air core transformer for arbitrary excitation.

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Patent Owner(s)

  • VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Fred C Blacksburg, US 124 4621
Mu, Mingkai Blacksburg, US 10 51

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