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1. 发明授权

US06815916B2 Speed-control drive circuit for a D.C. brushless fan motor 失效
标题翻译：直流无刷风扇电机的调速驱动电路
公开(公告)号：US06815916B2
公开(公告)日：2004-11-09
申请号：US10123280
申请日：2002-04-17
申请人： Alex Horng , Ying-Ya Lu , Ming-Shen Wang
发明人： Alex Horng , Ying-Ya Lu , Ming-Shen Wang
IPC分类号： H02P500
CPC分类号： H02P6/14 , H02P6/08 , H02P25/024
摘要： A speed-control drive circuit for a D.C. brushless fan motor includes a pulse width modulation input end for receiving an external pulse width modulation signal for controlling (and changing) the motor speed, 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 windings. The pulse width modulation signal controls the motor winding drive circuit to cause excitation/unexcitation of the set of motor windings and to alternately changes a direction of current such that the set of motor windings adjusts a speed of the fan motor in response to excitation of the set of motor windings responsive to the pulse width modulation signal. The speed of the 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.
摘要翻译：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用于控制（和改变）电动机速度的外部脉宽调制信号的脉宽调制输入端和电动机绕组驱动电路。电动机绕组驱动电路和脉宽调制输入端连接到一组电动机绕组。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风力发电机的激励来调节风扇电动机的转速响应于脉宽调制信号的一组电动机绕组。当脉冲宽度调制信号的操作周期增加时，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。

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