Doubly-fed induction generator system and the self-test method for the active crowbar circuit thereof
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United States of America Patent
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Sep 22, 2015
Grant Date -
Jan 31, 2013
app pub date -
May 15, 2012
filing date -
Jul 29, 2011
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Abstract
Provided is a doubly-fed induction generator system and a self-test method for the active crowbar circuit of the doubly-fed induction generator system. The invention is featured by using the controller of the doubly-fed induction generator system to carry out a self-test procedure to detect the loop current of the active crowbar circuit for determining if the active crowbar circuit can be turned on and off normally. Also, the rotor-side converter and the active crowbar circuit of the doubly-fed induction generator system are forbidden to turn on simultaneously during the execution of the self-test procedure.
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