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33 条记录 (耗时 0.011 秒)

    CONTROL OF AN ELECTRICAL RELUCTANCE MACHINE
    1.
    发明授权
    CONTROL OF AN ELECTRICAL RELUCTANCE MACHINE 有权
    驾驶电动磁阻电机

    公开(公告)号：EP1208636B1

    公开(公告)日：2004-01-21

    申请号：EP00954730.8

    申请日：2000-08-17

    申请人： Black & Decker Inc. ,  UNIVERSITY OF WARWICK

    发明人： POLLOCK, Charles ,  POLLOCK, Helen Geraldine Phyllis

    IPC分类号： H02P1/16 ,  H02P5/05 ,  H02P7/05

    CPC分类号： H02P1/163 ,  H02P1/16 ,  H02P25/08 ,  H02P25/0925

    摘要： An electrical machine comprises a rotor without windings, a stator having an armature winding (24, 25) and a field winding (10) for generating a magnetomotive force in a direction extending transversely of the magnetomotive force generated by the armature winding. An electronic circuit (40) is provided for controlling the current in the armature winding (24, 25) such that periods in which a magnetomotive force in one direction is associated with a first current pulse alternate with periods in which a magnetomotive force in the opposite direction is associated with a second current pulse. A position sensor is provided for monitoring the rotational position of the rotor and for supplying output signals dependent on the speed of rotation of the rotor. Furthermore a control system (32) supplies control signals to the circuit (40) to control the current in the armature winding (24, 25). In order to enhance the performance at high speed, the control signals are produced in response to sensor output signals which provide an advanced indication of the rotational position of the rotor. Furthermore, in order to prevent oscillation of the rotor on start-up, the control signals supplied to the circuit (40) during an initial start-up period are each produced after a time delay as compared with the production of the control signals over subsequent cycles of rotation during acceleration of the rotor. This can be achieved with simple on/off control of armature and field switching devices, so that the control circuitry can be produced at relatively low cost.

    PROCEDE POUR ALIMENTER UN MOTEUR A RELUCTANCE VARIABLE A COMMUTATION ELECTRONIQUE ET CIRCUIT D'ALIMENTATION POUR SA MISE EN OEUVRE
    2.
    发明授权
    PROCEDE POUR ALIMENTER UN MOTEUR A RELUCTANCE VARIABLE A COMMUTATION ELECTRONIQUE ET CIRCUIT D'ALIMENTATION POUR SA MISE EN OEUVRE 失效
    程序来用于实施处理电子供应换向勉强和电路

    公开(公告)号：EP0876705B1

    公开(公告)日：2003-08-27

    申请号：EP97901127.7

    申请日：1997-01-20

    申请人： SEB S.A.

    发明人： GUINET, Michel

    IPC分类号： H02P5/05 ,  H02P3/06

    CPC分类号： H02P25/08

    摘要： A method for powering an electronically switched variable reluctance motor (100) from a single-phase AC voltage source (17) is disclosed. Each phase of the motor is sequentially subjected to a magnetising sequence, a demagnetising sequence and an energy transfer to a storage capacitor (C) common to all the phases. Feedback sequences (R) in which the energy stored in the storage capacitor (C) is returned to the rectifier stage (15) are performed by controlling a chopping switch (TH) connected in series to the storage capacitor (C). The method includes a step of monitoring the energy returned to the rectifier stage (15) in order to correct instability in the rectified power supply current (Ia) relative to a reference current wave, and modulating the cyclical chopping ratio around a substantially constant mean value. The method is useful for powering household appliances.

    Energisation control of a switched reluctance motor
    3.
    发明公开
    Energisation control of a switched reluctance motor 审中-公开
    Erregungssteuerungfüreinen geschalteten Reluktanzmotor

    公开(公告)号：EP0948125A2

    公开(公告)日：1999-10-06

    申请号：EP99302649.1

    申请日：1999-03-30

    申请人： AISIN SEIKI KABUSHIKI KAISHA

    发明人： Okawa, Akemi ,  Kitamura, Yuichiro ,  Fukushima, Tomohiro ,  Ma, Xiaoou

    IPC分类号： H02P5/05

    CPC分类号： H02P25/08

    摘要： An energisation on angle, a first energisation off angle, a second energisation off angle and a target value corresponding to an angle of rotation are determined with respect to the coil 1a on the basis of a target torque and a rotation speed. The transistors (switching element) 12a and 12b are both turned on when the energisation on angle is reached. The transistor 12a is turned off if a value of an actual current is over the target value of the current while the first energisation off angle has not been reached. The transistor 12a is turned off irrespective of the magnitude of the value of the actual current and the target value of the current when the first energisation off angle is reached. The transistors 12a and 12b are both turned off when the second energisation off angle is reached.

    摘要翻译： 基于目标转矩和转速，相对于线圈1a确定对角度的通电，第一通电关闭角度，第二激励关闭角度和对应于旋转角度的目标值。 当达到通电角度时，晶体管（开关元件）12a和12b都被接通。 如果在没有达到第一通电偏离角的情况下实际电流的值超过电流的目标值，则晶体管12a截止。 无论实际电流的值的大小和当达到第一通电切断角时的电流的目标值，晶体管12a都被截止。 当达到第二通电偏离角时，晶体管12a和12b均断开。

    Single-phase switched reluctance motor driving apparatus and method
    7.
    发明公开
    Single-phase switched reluctance motor driving apparatus and method 审中-公开
    Verfahren und Vorrichtung zum Betreiben eines einphasig geschalteten Reluktanzmotors

    公开(公告)号：EP1139555A2

    公开(公告)日：2001-10-04

    申请号：EP01300851.1

    申请日：2001-01-31

    申请人： LG ELECTRONICS INC.

    发明人： Lim, Jun-Young

    IPC分类号： H02P5/05

    CPC分类号： H02P25/092 ,  H02P6/26 ,  Y02P80/116

    摘要： Disclosed is a single-phase switched reluctance motor (SRM) driving apparatus and method which enables a high-speed and high-efficiency SRM and can minimize the switching frequency of elements for driving the SRM. The SRM driving apparatus includes a smoothing circuit section (502) for smoothing an input power supply (501), a motor driving section (503) for receiving a voltage smoothed by the smoothing circuit section and supplying the voltage to a motor (504) in accordance with a control signal, a plurality of sensors (505,506) for sensing a rotating speed and a phase of the motor, and a microcomputer (507) for receiving one selected among signals sensed by the plurality of sensors and outputting the control signal for controlling the motor driving section.

    摘要翻译： 公开了一种单相开关磁阻电动机（SRM）驱动装置和方法，其能够实现高速和高效SRM并且可以最小化用于驱动SRM的元件的开关频率。 SRM驱动装置包括用于平滑输入电源（501）的平滑电路部（502），用于接收由平滑电路部平滑的电压并将电压提供给电动机（504）的电动机驱动部（503） 根据控制信号，用于感测电动机的转速和相位的多个传感器（505,506）和用于接收由多个传感器感测到的信号之一选择的微机（507），并输出用于控制的控制信号 电动机驱动部。

    Variable load inductance compensation for motor drive circuits
    8.
    发明公开
    Variable load inductance compensation for motor drive circuits 失效
    在马达驱动电路电感补偿可变负荷的

    公开(公告)号：EP0865153A1

    公开(公告)日：1998-09-16

    申请号：EP98400549.6

    申请日：1998-03-09

    申请人： UNIVERSAL INSTRUMENTS CORPORATION

    发明人： Zalesski, Andrew

    IPC分类号： H02P5/05

    CPC分类号： H02P25/08 ,  H02P7/288 ,  H02P25/24

    摘要： The apparatus includes a motor control circuit including an amplifier with an inductance compensation circuit responsive to a motor, such as a switched reluctance motor, having inductance variations. The inductance compensation circuit includes at least two inductance compensation values and switching means for alternatingly coupling and decoupling at least one of the inductance compensation values from the inductance compensation circuit providing at least first and second inductance compensation for driving the motor in response to variations in the inductance of the motor.

    Current decay control in switched reluctance motor
    9.
    发明公开
    Current decay control in switched reluctance motor 失效
    einem geschalteten Reluktanzmotor中的Abklingkontrollefürden Strom

    公开(公告)号：EP0749202A1

    公开(公告)日：1996-12-18

    申请号：EP95630060.2

    申请日：1995-06-12

    申请人： EMERSON ELECTRIC CO.

    发明人： Horst, Gary Edward

    IPC分类号： H02P5/05 ,  H02P7/05

    CPC分类号： H02P25/0925

    摘要： A control circuit (10) for controlling the residual or tail current decay in a single phase or polyphase SRM winding when a phase is switched from active to inactive. A Hall-effect type sensor (30) senses rotor position of the SRM. Current flows through a winding (W) of the motor when the motor phase winding is active; and, current flow into the winding decays to zero when the phase becomes inactive. Semiconductor switches (22) direct current flow into the winding when the phase is active and then redirect residual energy in the winding between an energy recovery circuit and an energy dissipation circuit when the phase becomes inactive. A PWM signal generator (44) provides PWM operating signals to the switches to control current flow first into the winding and then between the recovery and dissipation circuits. A control module (42), or microprocessor (52) with a PWM output, is responsive to rotor position information for controlling operation of the PWM signal generator. The signal generator provides PWM signals having one set of signal characteristics when there is current flow to the winding and a different set of characteristics when there is not. This produces alternate intervals of zero voltage and forced commutation residual current decay while the phase is inactive. During the decay interval, both the PWM frequency and pulse duty cycle are variable produce a current decay scheme which eliminates ringing and motor noise.

    摘要翻译： 一种控制电路（10），用于当相位从有效切换到非活动状态时，控制单相或多相SRM绕组中的残余或尾电流衰减。 霍尔效应型传感器（30）感测SRM的转子位置。 当电机相绕组有效时，电流流过电机绕组（W）; 并且当相变为无效时，流入绕组的电流衰减为零。 当相位有效时，半导体开关（22）将直流电流流入绕组，然后在相位变为无效时在能量恢复电路和能量耗散电路之间的绕组中的剩余能量重定向。 PWM信号发生器（44）向开关提供PWM操作信号，以首先控制电流流入绕组，然后在恢复和耗散电路之间。 具有PWM输出的控制模块（42）或微处理器（52）响应于用于控制PWM信号发生器的操作的转子位置信息。 当存在电流流向绕组时，信号发生器提供具有一组信号特性的PWM信号，当没有电流时，信号发生器提供不同的一组特性。 这在相位无效时产生零电压和强制换向剩余电流的交替间隔。 在衰减间隔期间，PWM频率和脉冲占空比均可变，产生电流衰减方案，消除振铃和电机噪声。