A brushless DC motor that saves the debugging process of the Hall position sensor

A brushless DC motor, Hall position technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of complex process, interference and heat generation

Active Publication Date: 2020-04-28
XIAN AEROSPACE PROPULSION TESTING TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can save space, but it is easily affected by the interference and heat generation of the stator armature reaction magnetic field change, and the manufacturability is relatively complicated

Method used

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  • A brushless DC motor that saves the debugging process of the Hall position sensor
  • A brushless DC motor that saves the debugging process of the Hall position sensor
  • A brushless DC motor that saves the debugging process of the Hall position sensor

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0028] In this embodiment, a brushless DC motor with 4 poles and 12 slots is taken as an example to describe in detail, and the driving control mode adopts a common three-phase full-wave six-state working mode.

[0029] In order to obtain the largest possible motor torque output, the back EMF of the same phase and the current are in the same direction. Therefore, under the guidance of this theory, for a certain phase of the motor such as A phase, 30° after the A opposite EMF zero crossing point The electrical angle moment should be the moment when the upper jump edge of the phase A Hall circuit output HA appears. For this example, the three-phase windings of the motor are Figure 4 The distribution shown is in the form of double-layer windings with full pole ...

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Abstract

The invention provides a direct current brushless motor which saves the debugging process of a Hall position sensor, comprising a motor body and a Hall position sensor. The motor body comprises a housing, an end cover, a stator assembly, a rotor assembly for converting electrical performance into axial output power, and a rotor shaft arranged in the rotor assembly. A Hall position sensor includesa sensor stator and a sensor rotor; The position magnet of the position sensor and the rotor magnet of the motor body realize the axial projection of the polarity of the magnet. A stationary portion of that motor body in the present invention has a definite relative position with reference to the house, Therefore, the relative position of the motor phase winding and the Hall position sensor statorcan be planned in advance by this structure design, and the distribution position of the position sensor can be optimized efficiently by means of simulation design, and finally the position sensor stator position can be fixed precisely by this structure design of the motor.

Description

technical field [0001] The invention relates to the technical field of DC brushless motors, in particular to a DC brushless motor which saves the debugging process of a Hall position sensor. Background technique [0002] With the continuous progress of computer technology, electronic technology, control technology, permanent magnet materials and power electronic devices, permanent magnet brushless motor products are more and more widely used. The permanent magnet brushless motor is composed of a motor body and a drive controller. Usually, a Hall element for commutation position detection is installed in the motor body. [0003] There are generally two installation methods for Hall sensors. One is the installation method that is separated from the motor body. The Hall sensor that adopts this installation method is composed of a stationary part and a rotating part, namely the position sensor stator and the sensor rotor. The sensor rotor can directly use the magnet steel of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K29/08H02K11/215
CPCH02K11/215H02K29/08
Inventor 杨凡高俊丽杨光侯果文惠旋胡昊邓南权艳娜郭炳岐吴连波
Owner XIAN AEROSPACE PROPULSION TESTING TECH RES INST
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