Motor control method, motor module and cooling device using same

Abstract

The present invention provides a motor control method and a motor module and heat dissipation device using the same. The motor control method includes the following steps: providing a motor module; adjusting the control voltage to a driving voltage by a regulator, including the following steps: a voltage controller Judging whether the specific speed is greater than the preset speed; when the specific speed is equal to or greater than the preset speed, the motor controller adjusts the DC voltage to the first corresponding DC voltage corresponding to the specific speed to the motor; when the specific speed is lower than the preset speed, the motor control The regulator adjusts the DC voltage to a second corresponding DC voltage corresponding to the specific rotational speed, and outputs a modulation signal corresponding to the specific rotational speed to the modulator, and the modulator modulates the second corresponding DC voltage with the modulation signal, and outputs The drive voltage is given to the motor, wherein the duty cycle of the modulated signal is less than 100%. The modulation design of the embodiment of the present invention can make the motor module run at a low speed, so as to reduce the starting noise of the fan.

Description

technical field [0001] The present invention relates to a motor control method, a motor module and a cooling device using the same, and in particular to a motor control method using a modulation signal and a motor module and a cooling device using the same. Background technique [0002] In order to solve the heat dissipation problem, traditional technologies use fans to reduce the temperature of hot spots. Generally speaking, the fan is usually started at a high speed, although this can quickly cool down, but it causes the problem of excessive operating noise. [0003] In terms of fan operation modes, it can generally be divided into DC mode and pulse width modulation mode (PWM mode). The common disadvantage of both is that the speed cannot be reduced to a low speed. Therefore, a method common to both modes was created. [0004] For example, Taiwan Patent Publication No. TW201134083A1 discloses a speed regulation method for DC motors powered by dual power sources. In this...

AI Technical Summary

Problems solved by technology

Generally speaking, the fan is usually started at a high speed, although this can quickly cool down, but it causes the problem of excessive operating noise

[0003] In terms of fan operation modes, it can generally be divided into DC voltage mode (DC mode) and pulse width modulation mode (PWM mode). The common disadvantage of both is that the speed cannot be reduced to a low speed.

Images