Protection system and method for an electrical variable speed doubly fed induction machine

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United States of America Patent

PATENT NO 9768609
APP PUB NO 20160013632A1
SERIAL NO

14771367

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Abstract

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A protection system for an electrical variable speed doubly fed induction machine having a stator and a rotor, comprising:

    instrument transformers capable of measuring low frequency signals from the rotor and stator, in particular low frequency signals in the range of 0.1 Hz to 6 Hz;a protection relay which is configured to receive measurement values from the instrument transformers and to sample said measurements values at a constant sampling rate.

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Patent Owner(s)

  • ALSTOM TECHNOLOGY LTD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
An, Chang Stafford, GB 1 15
Lloyd, Graeme Stafford, GB 1 15
Zou, Li Stafford, GB 43 567

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