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公开(公告)号：US5528445A
公开(公告)日：1996-06-18
申请号：US311338
申请日：1994-09-23
CPC分类号： B60L3/003 , B60L11/1805 , B60L3/0061 , B60L3/0069 , B60L2200/26 , B60L2220/14 , Y02T10/7005
摘要： A fault current protection system for a traction vehicle propulsion system including a synchronous generator having armature and field windings and power conditioning circuitry connecting the generator armature windings to a traction motor employs a normally charged capacitor which, in response to a fault signal resulting from excess current in the generator armature windings, is electrically switched into parallel with the excitation current source connected to the generator field windings so as to discharge through the generator field windings and commutate the excitation current source.
摘要翻译： 用于牵引车辆推进系统的故障电流保护系统包括具有电枢和励磁绕组的同步发电机和将发电机电枢绕组连接到牵引电动机的功率调节电路采用正常充电的电容器，其响应于由过电流产生的故障信号 在发电机电枢绕组中，电连接到与发电机励磁绕组连接的励磁电流源并联，以便通过发电机励磁绕组放电并使励磁电流源换向。
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2.发明授权Automatic overvoltage protection for an alternator in a locomotive propulsion system 失效机车推进系统中交流发电机的自动过电压保护
公开(公告)号：US5528444A
公开(公告)日：1996-06-18
申请号：US311337
申请日：1994-09-23
CPC分类号： H02H7/06 , B60L11/1805 , B60L3/003 , B60L3/0061 , B60L3/0069 , B60L2200/26 , B60L2220/14 , Y02T10/7005
摘要： A shorted diode protection system for a traction vehicle propulsion system including a synchronous generator having armature and field windings and a bridge rectifier circuit coupling the generator armature windings to a traction motor employs a normally non-conducting solid-state controllable electric valve in parallel with the generator field windings. When a rectifier diode of the bridge rectifier circuit fails short, an a-c current is reflected into the generator field winding circuit. Upon detection of this reflected current, the valve is switched into a conducting state, thereby limiting the voltage on the generator field windings.
摘要翻译： 一种用于牵引车辆推进系统的短路二极管保护系统，包括具有电枢和励磁绕组的同步发电机和将发电机电枢绕组耦合到牵引电动机的桥式整流器电路采用正常不导电的固态可控电动阀，与 发电机励磁绕组。 当桥式整流电路的整流二极管短路时，a-c电流被反射到发电机励磁绕组电路中。 在检测到这种反射电流时，阀被切换到导通状态，从而限制发电机励磁绕组上的电压。
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公开(公告)号：US5168416A
公开(公告)日：1992-12-01
申请号：US584566
申请日：1990-09-18
申请人： Ronald B. Bailey , Herbert J. Brown , Myron L. Smith , Edgar T. Balch , Roger D. Huczko , Joseph A. Laukaitis
发明人： Ronald B. Bailey , Herbert J. Brown , Myron L. Smith , Edgar T. Balch , Roger D. Huczko , Joseph A. Laukaitis
CPC分类号： B60L11/123 , B60L3/0061 , B60L3/0069 , B60L3/0092 , B60L3/06 , H02H7/0811 , B60L2200/26 , B60L2250/16 , Y02T10/6217 , Y02T10/646 , Y02T10/648 , Y02T10/7077
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.
摘要翻译： 提供了用于机车推进系统的闪络保护，该机车推进系统包括多个直流牵引电动机，每个直流牵引电动机具有经受闪络的换向器，具有电枢和励磁绕组的牵引交流发电机和由原动机驱动的转子，可控的励磁电流源连接到 交流发电机场，以及包括用于将交流发电机连接到电动机换向器的电力整流器的装置。 其包括用于在任何电动机中发生闪络时产生故障信号的装置，连接在励磁电流源和交流发电机电场之间并且具有替代的导通和非导通状态的固态可控电动阀，以及用于将阀从 响应于产生的故障信号而导通到非导通状态，于是交流发电机电场中的励磁电流的大小迅速地向零减小，并且每当发生闪络时交流发电机的输出电流相应地减小。
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公开(公告)号：US4143280A
公开(公告)日：1979-03-06
申请号：US811921
申请日：1977-07-01
IPC分类号： B60L50/10 , B60K6/46 , B60K6/52 , B60L50/12 , B60W10/08 , B60W20/00 , B66B11/04 , B66D1/02 , B66D1/14 , H02P9/04 , H02P9/30 , B60L11/06
CPC分类号： B60W10/08 , B60K6/46 , B60K6/52 , B60L11/06 , H02P9/30 , Y02T10/6217 , Y02T10/6265 , Y02T10/642 , Y02T10/70 , Y02T10/7077 , Y02T10/7258 , Y10S903/903 , Y10S903/916
摘要： A control system for a self-excited alternator which includes an auxiliary winding adapted to supply excitation to the alternator field winding incorporates a circuit for supplementing field excitation when the available energy from the auxiliary winding is less than the desired magnitude of field excitation. The self-exciting a-c current from the auxiliary winding is coupled through a phase-controlled rectifier circuit to the alternator field winding. A secondary excitation source such as a battery is coupled to the alternator field winding through a chopper circuit. A regulating circuit is responsive to a field current reference signal for controlling the conduction of the phase controlled rectifier circuit and the chopper circuit in a manner to regulate the alternator field excitation to the desired value. The regulating circuit is adapted to supplement the excitation supplied by the auxiliary winding with excitation from the secondary source until the excitation available from the auxiliary winding is sufficient to supply the desired magnitude of alternator field excitation.
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公开(公告)号：US5245495A
公开(公告)日：1993-09-14
申请号：US983499
申请日：1992-11-30
申请人： Ronald B. Bailey , Herbert J. Brown , Myron L. Smith , Edgar T. Balch , Roger D. Huczko , Joseph A. Laukaitis
发明人： Ronald B. Bailey , Herbert J. Brown , Myron L. Smith , Edgar T. Balch , Roger D. Huczko , Joseph A. Laukaitis
CPC分类号： B60L3/0069 , B60L3/0023 , H02H7/0811 , B60L2200/26 , Y02T10/646 , Y02T10/648
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.
摘要翻译： 提供了用于机车推进系统的闪络保护，该机车推进系统包括多个直流牵引电动机，每个直流牵引电动机具有经受闪络的换向器，具有电枢和励磁绕组的牵引交流发电机和由原动机驱动的转子，可控的励磁电流源连接到 交流发电机场，以及包括用于将交流发电机连接到电动机换向器的电力整流器的装置。 其包括用于在任何电动机中发生闪络时产生故障信号的装置，连接在励磁电流源和交流发电机电场之间并且具有替代的导通和非导通状态的固态可控电动阀，以及用于将阀从 响应于产生的故障信号而导通到非导通状态，于是交流发电机电场中的励磁电流的大小迅速地向零减小，并且每当发生闪络时交流发电机的输出电流相应地减小。
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