Methods and apparatus for soft operation of transformers using auxiliary winding excitation

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10135372
APP PUB NO 20170149366A1
SERIAL NO

15421819

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An apparatus includes a magnetizing circuit configured to be coupled to a transformer and to selectively provide a magnetizing current to the transformer and a control circuit configured to cause the magnetizing circuit to provide the magnetizing current following disconnection of the primary winding of the transformer from the power source. The magnetizing circuit may be configured to provide the magnetizing current from a first source following disconnection of the primary winding from a second source. The transformer may include a first transformer and the apparatus may further include a second, higher impedance transformer coupled between the second source and the first transformer. In further embodiments, the magnetizing circuit may include a solid-state converter.

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First Claim

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Patent Owner(s)

  • EATON INTELLIGENT POWER LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Farr, Thomas Arthur Candler, US 11 39
Gibbs, Irving Albert Mills River, US 12 44

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