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    • 50. 发明公开
    • VERFAHREN ZUM ANFAHREN EINES SENSOR- UND BÜRSTENLOSEN GLEICHSTROMMOTORS
    • 方法用于启动传感器无刷直流电机
    • EP1232561A1
    • 2002-08-21
    • EP00988615.1
    • 2000-11-15
    • ROBERT BOSCH GMBH
    • KRAUTH, WolfgangSCHWENK, Wolfgang
    • H02P6/22
    • H02P6/22
    • The invention relates to a method for starting a sensor- and brushless d.c. motor, the stator windings (22 to 27) of which are fed by a multi-phase d.c. voltage changer (12 to 17). To start the motor, it is first turned to a defined initial or starting position by way of an alignment method by simultaneously supplying it with a current of at least two phases (/W, V). In a second phase, a current supply state of the stator windings is initiated that has the desired current direction and that provides sufficient engine torque. The other current supply states of the corresponding phases (/U, W, /V, U, /W, V) are cyclically obtained and the rotor is set to rotate in synchronicity with the applied rotary field of the rotor. The motor can be used in a motor vehicle and is fed by the battery voltage (UBat) via the input ports (10 and 11). In a preferred embodiment of the invention, the current supplied during the alignment step can be adjusted corresponding to the value of the battery voltage and can be increased according to a predetermined curve shape. The invention provides a method for safely and rapidly set the rotor into rotation without producing overswings to the start position.