发明名称 |
METHOD TO RE-ENGAGE START OF DYNAMOELECTRIC MACHINE |
摘要 |
A method of starting a gas turbine engine with a synchronous multiphase alternating current (AC) dynamoelectric machine with a rotor and a stator that allows re-engagement of a starting operation at non-zero rotor speeds comprises the steps of: applying electrical excitation to the rotor; measuring electromotive force (EMF) generated in the stator; determining rotor speed, acceleration and position from the measured EMF by sensorless means; initiating closed-loop sensorless position controlled power to the stator if the determined rotor speed is at least a pre-determined minimum closed-loop sensorless re-engagement speed; initiating open-loop position controlled power to the stator if the determined rotor speed is less than the pre-determined minimum closed-loop sensorless re-engagement speed but at least a predetermined minimum open-loop re-engagement speed and the determined rotor acceleration is no more than a pre-determined maximum open-loop re-engagement acceleration; and initiating open-loop zero-speed start power to the stator if the determined rotor speed is less than the predetermined minimum open-loop re-engagement speed.
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申请公布号 |
US2009091133(A1) |
申请公布日期 |
2009.04.09 |
申请号 |
US20070867106 |
申请日期 |
2007.10.04 |
申请人 |
HAMILTON SUNDSTRAND CORPORATION |
发明人 |
BAKER DONAL E.;MILES GARY L.;BECKMANN, JR. RAYMOND J. |
分类号 |
H02P9/08 |
主分类号 |
H02P9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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