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    • 2. 发明授权
    • Motor controller
    • 电机控制器
    • US4761599A
    • 1988-08-02
    • US34425
    • 1987-04-24
    • Isamu YasunobuKenichi OharaNobuho ShibataShigeo Neki
    • Isamu YasunobuKenichi OharaNobuho ShibataShigeo Neki
    • H02P6/04H02P6/06H02P6/08H02P25/02H02P3/20
    • H02P6/06H02P25/03
    • This invention relates to a motor controller which is so arranged that voltage to be applied to drive windings of a synchronous motor (1) is switched by a plurality of switching elements of a power inverter circuit (4), while the current supply amount to the switching elements is controlled based on pulse width-modulated signals, and which is provided, at a distributing section for selecting energization of said switching elements, with a first logic circuit for applying the pulse width modulation only to the predetermined switching selected from among the switching elements selected during forward rotation of the motor, and a second logic circuit for applying the pulse width modulation to all of the switching elements selected during the reverse rotation of the motor, so as to thereby effect the reduction of electro-magnetic noise during the forward rotation, and to effect the suppression of current during the reverse rotation.
    • PCT No.PCT / JP86 / 00353 Sec。 371日期1987年3月16日 102(e)日期1987年4月24日PCT申请1986年7月11日PCT公布。 公开号WO87 / 00705 日期:1987年1月29日。本发明涉及一种电动机控制器,该电动机控制器被布置为通过电力逆变器电路(4)的多个开关元件来切换施加到同步电动机(1)的驱动绕组的电压, 而基于脉宽调制信号控制对开关元件的电流供给量,并且在用于选择所述开关元件的通电的分配部分设置有用于将脉冲宽度调制仅施加到第一逻辑电路的第一逻辑电路 从在电动机的正转期间选择的开关元件中选择的预定开关,以及用于对电动机的反向旋转期间选择的所有开关元件施加脉宽调制的第二逻辑电路,从而实现 正向旋转期间的电磁噪声,并且在反向旋转期间实现电流的抑制。