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    • 72. 发明公开
    • Method for starting a switched reluctance motor
    • Verfahren zum Anlauf eines Schrittschaltreluktanzmotors
    • EP1391980A2
    • 2004-02-25
    • EP02028881.7
    • 2002-12-23
    • LG Electronics, Inc.
    • Sang Young KIMLee, Yo HanLim, Jun YoungChoi, Yong Won
    • H02K19/10H02K19/36
    • H02K19/103B60L15/2072B60L2210/40B60L2240/12B60L2240/32B60L2240/421B60L2240/423H02K11/00H02K19/36H02K29/08H02P25/0925H02P25/098Y02T10/641Y02T10/644Y02T10/645Y02T10/7241Y02T10/7275
    • A switched reluctance motor and an initial activating method thereof in which an aligning pulse is applied to a stator in order to make a rotor wait at a normal torque generating region to be driven, thereby preventing the rotor from rotating in a direction reverse to a target rotating direction. The standby position of the rotor in the switched reluctance motor is sensed. When the standby position of the rotor corresponds to a reverse torque generating region where a torque causing rotation in a direction reverse to a target rotating direction is generated, an aligning pulse is applied to the stator, thereby causing the rotor to rotate to a normal torque generating region where a torque causing rotation in a normal direction corresponding to the target rotating direction is generated. A driving pulse is then to the stator, thereby causing the rotor waiting at the normal torque generating region to rotate in the normal direction. Accordingly, it is possible to stably and reliably control the rotating direction of the motor. In addition, there is an advantage in that the durability and reliability of the appliance using the motor according to the present invention can be improved.
    • 开关磁阻电动机及其初始激活方法,其中对定子施加定向脉冲以使转子在正常转矩产生区域等待驱动,从而防止转子在与靶相反的方向上旋转 旋转方向。 感测开关磁阻电动机中转子的待机位置。 当转子的待机位置对应于产生沿与目标旋转方向相反的方向旋转的转矩的反向转矩产生区域时,对定子施加对准脉冲,从而使转子旋转到正常转矩 产生在与目标旋转方向对应的法线方向产生旋转的转矩的发生区域。 然后向定子施加驱动脉冲,从而使转子等待在正常转矩产生区域沿正常方向旋转。 因此,可以稳定可靠地控制电动机的旋转方向。 此外,具有能够提高使用本发明的电动机的器具的耐久性和可靠性的优点。
    • 75. 发明公开
    • ELECTRICAL MACHINES
    • 控制一磁阻电机
    • EP1208643A1
    • 2002-05-29
    • EP00958761.9
    • 2000-08-17
    • Black & Decker Inc.UNIVERSITY OF WARWICK
    • Pollock, CharlesPollock, Helen, Geraldine, Phyllis
    • H02P7/05
    • H02P1/163H02P1/16H02P25/08H02P25/0925
    • 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), each control signal being produced in response to detection of a respective one of the output signals from the position sensor and being maintained for a length of time determined by the duration of the output signal. Such an arrangement enables control of acceleration, no-load speed and loaded torque-speed characteristics (and braking of the machine) to be achieved with simple on/off control of armature and field switching devices (if present), so that the control circuitry can be produced at relatively low cost. Simplification of the control circuitry is further ensured by the fact that such control can be effected without current sensing.
    • 80. 发明公开
    • Energization controller of electric motor
    • 电动机通电控制器
    • EP0887916A3
    • 1999-01-20
    • EP98305153.3
    • 1998-06-29
    • Aisin Seiki Kabushiki Kaisha
    • Sugiyama, Masanori
    • H02P7/00
    • H02P25/0925
    • An energization controller (10) of an electric motor (30) which enables a desired chopping frequency to be maintained without an increase in current amplitude. The energization controller (10) is provided wi-th a chopping control means which turns off both of the first and second switching elements (20a and 20b) when the value of the current flowing through the phase winding (26) of the motor (30) exceeds a reference current value, the turns on the second switching element (20b) after a predetermined period of time has elapsed or when the energization current falls below the reference current value, and then turns on both of the switching elements (20a and 20b) when the next clock pulse of a synchronizing signal (CLK15K) occurs after the energization signal falls below the reference current value.
    • 一种电动机(30)的通电控制器(10),其能够在不增加电流幅度的情况下保持期望的斩波频率。 通电控制装置(10)具备斩波控制单元,该斩波控制单元在流过电动机(30)的相绕组(26)的电流值与第一开关元件 )超过基准电流值时,在经过规定时间后,或者通电电流低于基准电流值时,第2开关元件(20b)的匝数成为导通状态,然后导通开关元件(20a,20b) )在通电信号下降到参考电流值以下时发生同步信号(CLK15K)的下一个时钟脉冲时发生。