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Drive circuit of PWM motor

A motor drive and circuit technology, applied in the field of PWM motor drive circuit, can solve the problem of energy consumption

Active Publication Date: 2007-05-09
SUNONWEALTH ELECTRIC MACHINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, since the operating temperature of the motor has not yet reached a high temperature state when the motor is activated, the sudden increase of the motor speed to 6000 RPM (high speed state) by the driver IC assembly 10 does not meet the normal working requirements, and has the disadvantage of undue energy consumption

Method used

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  • Drive circuit of PWM motor
  • Drive circuit of PWM motor
  • Drive circuit of PWM motor

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Embodiment Construction

[0020] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be exemplified below in detail together with the attached drawings.

[0021] Please refer to FIG. 3 , in a preferred embodiment of the present invention, the PWM motor drive circuit 1 is electrically connected to a motor coil 2 , and the motor coil 2 can be a single-phase coil, a dual-phase coil or a three-phase coil. The PWM motor driving circuit 1 includes a driving IC component 10, a Hall IC component 11, a PWM conversion circuit 12 and at least one capacitor 3'. The motor coil 2 is driven and turned on by the PWM motor drive circuit 1 so that the motor coil 2 generates an alternating magnetic field.

[0022] Referring to FIG. 3 again, the driving IC assembly 10 is electrically connected to the Hall IC assembly 11 , and the driving IC assembly 10 is also electrically connected to the PWM converting cir...

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PUM

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Abstract

The circuit consists of a drive IC component, a Hall IC component, a PWM converter circuit and a capacitor. The drive IC component connects to the Hall IC component electrically. One of the pins of the drive IC component connects to the PWM converter circuit and one end of the capacitor electrically. The other end of the capacitor connects to a voltage source. During activating the motor, the capacitor prevents the pin of drive IC component from forming zero electrical levers to prevent the motor from a high rotary speed when it just activated.

Description

technical field [0001] The present invention relates to a PWM motor drive circuit, in particular to a PWM motor in which a capacitor is connected in parallel between a drive IC component and a PWM conversion circuit. When the motor is activated, the capacitor can prevent the motor from entering a high-speed mode once activated. Drive circuit. Background technique [0002] Please refer to FIG. 1, the existing PWM (Pulse Width Modulation) motor has a PWM motor drive circuit 1 connected to a motor coil 2, so as to control the motor coil 2 for alternating excitation, so that a motor can be driven The rotor produces rotation. The PWM motor driving circuit 1 includes a driving IC component 10 , a Hall IC component 11 and a PWM conversion circuit 12 . The driving IC assembly 10 is electrically connected to the Hall IC assembly 11 for receiving the rotor detection signal of the Hall IC assembly 11 . The driving IC assembly 10 has a pin Vth, and the pin Vth is electrically connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/16H02P23/00H02P6/00
Inventor 洪银树郑宗根
Owner SUNONWEALTH ELECTRIC MACHINE IND