Induction motor control apparatus and method for restart when rotating
in shutdown
    2.
    发明授权
    Induction motor control apparatus and method for restart when rotating in shutdown 失效
    感应电机控制装置及关机时旋转时的重启方法

    公开(公告)号:US4684868A

    公开(公告)日:1987-08-04

    申请号:US793045

    申请日:1985-10-30

    摘要: AC induction motor energized by an inverter coupled with a DC power source. Upon shutdown of the inverter because of a fault condition or a rail gap between adjacent power sources, if the motor rotating frequency is greater than a minimum frequency then a decreased motor voltage is applied to the motor and increased as a ramp over a provided time delay period, after which the motor slip is controlled to provide a desired motor torque that is increased over a subsequent time delay period.

    摘要翻译: 交流感应电动机由与直流电源耦合的逆变器供电。 由于相邻电源之间的故障状态或轨道间隙而关闭变频器时,如果电机转速大于最小频率,则电机电压降低到电机上,并在提供的时间延迟时以斜坡增加 之后,控制电动机滑差以提供在随后的时间延迟周期内增加的期望的电动机转矩。

    Induction motor control apparatus and method
    3.
    发明授权
    Induction motor control apparatus and method 失效
    感应电动机控制装置及方法

    公开(公告)号:US4777420A

    公开(公告)日:1988-10-11

    申请号:US936928

    申请日:1986-11-28

    IPC分类号: B60L15/20 H02P27/04 H02P3/18

    摘要: An AC induction motor is energized by a voltage fed inverter coupled with a DC power source and is controlled in response to a torque request signal that is provided to accelerate or decelerate the motor as desired to maintain a desired torque output. The motor is operated to have each of a power and brake operation below the base speed of the motor and to have each of a power and brake operation above the base speed of the motor.

    摘要翻译: 交流感应电动机由与DC电源耦合的电压反相逆变器供电,并且响应于被提供以根据需要加速或减速电动机以维持期望的转矩输出的转矩请求信号来控制。 电动机的操作是使电动和制动操作中的每一个都低于电动机的基准速度,并且使电动和制动操作中的每一个高于电动机的基本速度。

    Induction motor control apparatus and method
    4.
    发明授权
    Induction motor control apparatus and method 失效
    感应电动机控制装置及方法

    公开(公告)号:US4695783A

    公开(公告)日:1987-09-22

    申请号:US790009

    申请日:1985-10-22

    IPC分类号: B60L11/18 H02P25/10 H02P5/41

    摘要: A control apparatus and method are provided for a load energized by an inverter coupled with a DC power source. The lag current angle between the current and the load voltage is utilized to determine when the output current is positive and when the output current is negative. The conduction times of the respective upper and lower gate turn off thyristors of each pole of the inverter are controlled in relation to the established current angle, with a provided modification of those conduction times being phased out in response to the desired output voltage for said load.

    摘要翻译: 提供一种用于由与DC电源耦合的逆变器供电的负载的控制装置和方法。 利用电流和负载电压之间的滞后电流角来确定输出电流何时为正,输出电流为负时。 逆变器的每个极的各个上,下栅极截止晶闸管的导通时间相对于已建立的电流角度被控制,并且响应于所述负载的期望的输出电压而逐渐淘汰导通时间的修改, 。

    Induction motor synthesis control apparatus and method
    5.
    发明授权
    Induction motor synthesis control apparatus and method 失效
    感应电动机综合控制装置及方法

    公开(公告)号:US4673859A

    公开(公告)日:1987-06-16

    申请号:US696814

    申请日:1985-01-31

    IPC分类号: B60L11/18 H02P27/04 H02P5/40

    摘要: An arrangement of interconnected timers is provided for operation with a microprocessor programmed to determine time delay counts that are fed out to these timers such that the timers can take care of the actual task of firing GTO inverter switches or not firing GTO inverter switches coupled with an AC traction motor for a vehicle. It is necessary to have correct transitions between the minus GTO switch and the plus GTO switch being ON for providing the desired motor voltage conditions with minimum electromagnetic interference in relation to the power supply. In addition the use of timer queues in complicated synthesis modes like the PWM and the quasi six-step operates to give the microprocessor adequate operating time for reasonable control signal time duration calculations. The timers are synchronized in hardware by a single crystal frequency, and they are synchronized in software such that the three phase independent waveforms stay 120.degree. apart.

    摘要翻译: 提供了互连定时器的布置,用于与被编程用于确定馈送到这些定时器的时间延迟计数的微处理器进行操作,使得定时器可以处理点火GTO逆变器开关的实际任务,或者不触发GTO逆变器开关 用于车辆的交流牵引电动机。 必须在负GTO开关和正GTO开关之间进行正确的转换,以提供与电源相关的最小电磁干扰的所需电机电压条件。 此外,在复杂的合成模式(如PWM和准六步)中使用定时器队列可以为微处理器提供合理的控制信号持续时间计算的足够的工作时间。 定时器通过单晶体频率在硬件上同步,并且它们在软件中同步,使得三相独立波形间隔120°。

    Vehicle brake control apparatus and method
    7.
    发明授权
    Vehicle brake control apparatus and method 失效
    车辆制动控制装置及方法

    公开(公告)号:US4578754A

    公开(公告)日:1986-03-25

    申请号:US596877

    申请日:1984-04-05

    IPC分类号: B61L3/00 B61L11/02

    CPC分类号: B61L3/008

    摘要: The speed of a vehicle is controlled in response to a new speed command lower than a previous speed command such that a safe brake speed profile reference is provided for increasing the average speed of the train in relation to the new speed command and before the new speed command controls the vehicle speed. A sensed vehicle acceleration is compared with a known safe acceleration to determine a speed error and a distance error to establish a critical velocity for the vehicle, which is used to provide an open loop brake control to merge the train speed in relation to a provided safe brake profile before the vehicle speed can again be controlled in relation to the new speed command.

    摘要翻译: 响应于低于先前速度命令的新的速度指令来控制车辆的速度,使得提供安全的制动速度轮廓参考以提高列车相对于新的速度命令的平均速度,并且在新速度之前 指令控制车速。 将感测到的车辆加速度与已知的安全加速度进行比较,以确定速度误差和距离误差,以建立车辆的临界速度,其用于提供开环制动控制以将列车速度相对于所提供的安全 车速之前的制动器轮廓可以再次根据新的速度指令进行控制。

    Vehicle speed control apparatus and method
    8.
    发明授权
    Vehicle speed control apparatus and method 失效
    车速控制装置及方法

    公开(公告)号:US4558415A

    公开(公告)日:1985-12-10

    申请号:US496693

    申请日:1983-05-20

    CPC分类号: B60K31/0058

    摘要: A passenger vehicle speed control apparatus operative with a track providing an input speed command having ONE and ZERO information components. Two programmed microprocessors operate through dynamic serial link apparatus for comparing a speed command signal from each information component and for comparing a speed error signal from each information component to provide a vital enablement of the vehicle propulsion motor apparatus.

    摘要翻译: 一种乘客车辆速度控制装置,其具有提供具有一个和零个信息分量的输入速度命令的轨道。 两个编程微处理器通过动态串行链路装置进行操作,用于比较来自每个信息分量的速度指令信号,并用于比较来自每个信息分量的速度误差信号,以提供车辆推进电动机装置的重要实现。