发明名称 |
Automatic flashover protection for locomotive traction motors |
摘要 |
Flashover protection is provided for a locomotive propulsion system including a plurality of d-c traction motors each having a commutator subject to flashovers, a traction alternator having armature and field windings and a rotor driven by a prime mover, a controllable source of excitation current connected to the alternator field, and means including an electric power rectifier for connecting the alternator to the motor commutators. It comprises means for producing a fault signal whenever a flashover occurs in any motor, a solid-state controllable electric valve connected between the excitation current source and the alternator field and having alternative conducting and non-conducting states, and means for changing the valve from conducting to non-conducting states in response to a fault signal being produced, whereupon the magnitude of excitation current in the alternator field is rapidly reduced toward zero and the alternator's output current is correspondingly decreased whenever a flashover occurs.
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申请公布号 |
US5245495(A) |
申请公布日期 |
1993.09.14 |
申请号 |
US19920983499 |
申请日期 |
1992.11.30 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
BAILEY, RONALD B.;BROWN, HERBERT J.;SMITH, MYRON L.;BALCH, EDGAR T.;HUCZKO, ROGER D.;LAUKAITIS, JOSEPH A. |
分类号 |
B60L3/00;H02H7/08 |
主分类号 |
B60L3/00 |
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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