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公开(公告)号：US3855512A
公开(公告)日：1974-12-17
申请号：US36897373
申请日：1973-06-11
申请人： GEN ELECTRIC
发明人： KONRAD C
CPC分类号： B60L11/1805 , H02P3/08 , H02P7/29 , Y02T10/646 , Y02T10/648 , Y02T10/7005
摘要： Means for detecting operation of a direct-current motor in the reversed or braking mode. Means are provided for receiving signals representative of armature current and of the mark-space conduction ratio of a motor control thyristor A rise in motor current above a predetermined value, coupled with a decline in mark-space ratio below a predetermined value, causes the disclosed circuit to produce an output signal which is utilized to temporarily limit conduction of the motor control thyristor and procure controlled deceleration.
摘要翻译： 用于在反转或制动模式下检测直流电动机的操作的装置。 提供了用于接收代表电枢电流的信号和电动机控制晶闸管A的标记空间导通比的电动机电流高于预定值的上升，加上标记空间比的下降超过预定值，导致所公开的 产生用于临时限制电动机控制晶闸管的传导并获得受控减速度的输出信号的电路。
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公开(公告)号：US3727103A
公开(公告)日：1973-04-10
申请号：US3727103D
申请日：1972-06-30
申请人： GEN ELECTRIC
CPC分类号： H02H11/004 , H02H3/021 , H02H3/34 , Y10T307/839
摘要： A three-phase system monitoring and control circuit wherein the control circuit has a thyristor in series with a fuse and a relay having contacts in the three-phase system. The thyristor is controlled by a gating circuit having a unijunction transistor oscillator with an RC charging network. A system voltage monitor supplies a charging voltage to the network. If the voltage monitor detects system voltages exceeding a predetermined minimum, the oscillator is triggered. The system current monitor supplies a discharging voltage during improper phase sequence to prevent triggering. Triggering of the oscillator and the subsequent gating of the thyristor indicate there are no lost or reversed phases in the three-phase system.
摘要翻译： 一种三相系统监视和控制电路，其中控制电路具有与保险丝串联的晶闸管和在三相系统中具有触点的继电器。 晶闸管由具有RC充电网络的单结晶体管振荡器的门控电路控制。 系统电压监视器向网络提供充电电压。 如果电压监视器检测到超过预定最小值的系统电压，则触发振荡器。 系统电流监视器在不正确的相序期间提供放电电压，以防触发。 振荡器的触发和晶闸管的后续选通指示三相系统中没有丢失或反相。
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公开(公告)号：US3820109A
公开(公告)日：1974-06-25
申请号：US21896772
申请日：1972-01-19
申请人： GEN ELECTRIC
IPC分类号： G01R19/18 , G01R19/252 , H03K7/06 , H03K19/173 , H03M1/00 , H03K13/20 , G06G7/18
CPC分类号： H03K19/173 , G01R19/18 , G01R19/252 , H03K7/06
摘要： A conversion circuit having polarity sensing wherein an input signal is converted into two signals each of which is the inverse of the other. A pair of switches, arranged to conduct these signals selectively, are connected to an integrator which accumulates the voltage of these signals within predetermined limits set by a pair of comparators. Control logic between the comparators and the switches, together with a third comparator producing a binary signal in response to polarity changes of the input signal, cause alternate conduction of the signals and produce a square wave pulse train having a pulse rate proportional to the absolute magnitude of the input signal.
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公开(公告)号：US3803472A
公开(公告)日：1974-04-09
申请号：US31952672
申请日：1972-12-29
申请人： GEN ELECTRIC
发明人： KONRAD C
CPC分类号： H03K7/08 , Y10S388/917 , Y10S388/92
摘要： An oscillator circuit having a variable mark-space ratio is provided through the selective variation of both the pulse width and the interpulse spacing. This oscillator circuit is particularly suited to the control of d.c. chopper circuits employing semiconductor switching devices for the controlled application of variable power to a load, for example a motor.
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公开(公告)号：US3801796A
公开(公告)日：1974-04-02
申请号：US3801796D
申请日：1972-10-30
申请人： GEN ELECTRIC
发明人： KONRAD C
CPC分类号： H02J3/42 , Y10T307/735
摘要： In a control system for automatically synchronizing and effecting connection of a power generator to an operating power line, means are provided for sensing differences in certain frequency and phase parameters existing between the output signal of the power generator and the signal on the operating power line and thereafter generating control signals for affecting the speed of the power generator to cause any differences existing between those frequency and phase parameters to fall within defined tolerable limits. When those defined tolerable limits are achieved, means are provided for generating and transmitting a control signal to effect connection of the power generator to the operating power line.
摘要翻译： 在用于自动同步和实现发电机与工作电源线的连接的控制系统中，提供了用于感测存在于发电机的输出信号与工作电源线上的信号之间的某些频率和相位参数的差异的装置，以及 然后产生用于影响发电机的速度的控制信号，以使这些频率和相位参数之间存在的任何差异落入规定的可容许极限内。 当实现了这些规定的可容许限制时，提供了用于产生和发送控制信号以实现发电机与工作电力线的连接的装置。
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公开(公告)号：US3753077A
公开(公告)日：1973-08-14
申请号：US3753077D
申请日：1971-08-31
申请人： GEN ELECTRIC
发明人： ANDERSON A , KONRAD C
CPC分类号： H02M1/06 , H02M3/135 , Y10S388/917
摘要： A control circuit for controlling the effective power to a load from a power source of substantially constant direct current voltage including a first solid state switching device for placing the load and the power source in series. Circuitry including a commutating capacitor chargeable in a first direction, provides that capacitor discharge, initiated by the gating of a second solid state switching device, will terminate conduction of the first switching device. An inductance is provided in series with the load to develop a capacitor voltage in a second direction, related to load current, upon the termination of the conduction period. A series loop is provided including the capacitor, the inductor, and a third solid state switching device to reverse the polarity of the capacitor voltage to the first direction.
摘要翻译： 一种控制电路，用于从基本恒定的直流电压的电源控制对负载的有效功率，包括用于串联放置负载和电源的第一固态开关装置。 包括可在第一方向充电的换向电容器的电路提供由第二固态开关器件的选通引起的电容器放电将终止第一开关器件的导通。 提供与负载串联的电感，以在导通周期结束时在与负载电流相关的第二方向上产生电容器电压。 提供了包括电容器，电感器和第三固态开关器件的串联回路，以将电容器电压的极性反转到第一方向。
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