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Starting apparatus and method for DC brushless motor

A DC brushless, motor technology, applied in the direction of starting device, electronic commutation motor control, motor generator/starter, etc., can solve the problem of increasing the difficulty of control

Active Publication Date: 2009-08-05
ADVANCED ANALOG TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technology needs complicated operation steps to start the motor, which increases the difficulty of control

Method used

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  • Starting apparatus and method for DC brushless motor
  • Starting apparatus and method for DC brushless motor
  • Starting apparatus and method for DC brushless motor

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Embodiment Construction

[0026] The content of the present invention will be explained through the following examples, which are related to a starting device and method for a brushless DC motor. According to the change of the counter electromotive force generated by the oscillation when the motor rotates to a stable equilibrium point, the current is provided to the other two. The coil can make the motor run smoothly. However, the embodiments of the present invention are not intended to limit the present invention to be implemented in any specific environment, application or special method as described in the embodiments. Therefore, the descriptions about the embodiments are only for the purpose of explaining the present invention rather than limiting the present invention. It should be noted that in the following embodiments and drawings, elements not directly related to the present invention have been omitted and not shown; and for the sake of easy understanding, the dimensional relationship among th...

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Abstract

The invention provides a starting device of a direct-current (DC) brushless motor and a method thereof, wherein, the DC brushless motor comprises a plurality of coils which are arranged in a common connection state by a common junction; the starting device provides the current for any two coils so as to lead the DC brushless motor to rotate, thus obtaining back electromotive force at a suspended joint coil; subsequently, the starting device provides the current to another two coils according to the change of the back electromotive force generated due to oscillation when the motor rotates to a stable balanced point, thus leading the motor to rotate successfully.

Description

technical field [0001] The invention relates to a starting device and method for a DC brushless motor, in particular to a starting device and method for starting a DC brushless motor without an inductor. Background technique [0002] In order to detect the correct position of the rotor in the motor when starting the brushless DC motor, the existing technology places sensors, such as Halls sensors, inside the motor to sense the rotor and sensor when the motor is running. Changes in the magnetic field between the rotors to obtain information about the rotor position. However, to use the Hall sensor, the sensor must be placed in the motor module, and the sensor has a problem of placement and positioning, so the assembly of the small motor is equivalent to increasing the difficulty and manufacturing cost. [0003] Sensorless DC brushless motor technology has been widely used in various products that require driving force. Generally speaking, most motors can have good speed cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/16H02P6/00H02P6/20
Inventor 苏文荣陈炫全
Owner ADVANCED ANALOG TECH INC