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    • 97. 发明申请
    • Speed-control drive circuit for a D.C. brushless fan motor
    • 直流无刷风扇电机的调速驱动电路
    • US20030198464A1
    • 2003-10-23
    • US10123280
    • 2002-04-17
    • Sunonwealth Electric Machine Industry Co., Ltd.
    • Alex HorngYing-Ya LuMing-Shen Wang
    • H02P007/29
    • H02P6/14H02P6/08H02P25/024
    • A speed-control drive circuit for a D.C. brushless fan motor comprises a pulse width modulation input end for receiving a pulse width modulation signal and a motor winding drive circuit. The motor winding drive circuit and the pulse width modulation input end are connected to a set of motor winding. The pulse width modulation signal controls the motor winding drive circuit to cause excitation/unexcitation of the set of motor winding and to alternately change a direction of current such that the set of motor winding adjusts a speed of the fan motor in response to excitation of the set of motor winding responsive to the pulse width modulation signal. The speed of said fan motor increases when an operational period of the pulse width modulation signal increases, and the speed of the fan motor decreases when the operational period of the pulse width modulation signal decreases.
    • 用于直流无刷风扇电动机的速度控制驱动电路包括用于接收脉宽调制信号的脉宽调制输入端和电动机绕组驱动电路。 电机绕组驱动电路和脉宽调制输入端连接一组电机绕组。 脉冲宽度调制信号控制电动机绕组驱动电路,引起电动机绕组组的激励/不激励,并且交替地改变电流方向,使得该组电动机绕组响应于所述电动机绕组的激励来调节风扇电动机的转速 响应于脉宽调制信号的电机绕组组。 当脉冲宽度调制信号的操作周期增加时,所述风扇电动机的速度增加,并且当脉宽调制信号的操作周期减小时,风扇电动机的速度降低。