Program controlled brushless DC motor

A technology of DC motors and electric motors, applied in the direction of single motor speed/torque control, torque ripple control, electrical components, etc., can solve the problem of low average value

Inactive Publication Date: 2005-08-17
王汝新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this scheme is that when the brushless DC motor is close to stalling, that is, when the electromagnetic vector resultant force F that interacts with the fixed magnetic pole after the moving magnetic pole rotates is connected to the zero position, the armature coil winding is forced to commutate through the detection and control system. , the operating state of its electromagnetic torque is 0-Tem-0, the fluctuation period is 60°, the output torque is a fluctuation curve, and the average value is low, see image 3

Method used

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Embodiment Construction

[0025] Embodiments of the present invention will be described below with reference to the drawings. Such as Figure 5a , Figure 5b , Figure 5c As shown, a program-controlled brushless DC motor includes an outer rotor, an inner stator and a motor operating circuit, and is characterized in that NS rotor permanent magnets 2 are evenly distributed on the inner cylindrical surface of the outer shell 1 of the outer rotor, and the outer rotor Trigger permanent magnets 4 are evenly distributed on the circumference of the circular plane in the middle part of the end cover 6; the inner stator is provided with stator electromagnetic coil windings 7, and the stator electromagnetic coil windings are connected in series by every adjacent three groups of coils. The triangular load electromagnetic coils are connected in parallel between the triangular load electromagnetic coils; the opposite inner stator end of the trigger permanent magnet 4 is fixed with a circular Hall sensor mounting p...

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Abstract

This invention relates to program controlled brushless direct current motor, which comprises outer rotor, inner stator and motor running circuit and is characterized by the following: the outer rotor shell inner column surface is evenly distributed with NS rotor permanent magnetism and the outer rotor end cover inside wall middle is evenly distributed with triggering permanent magnetism; the inner stator is located with stator electromagnetic coil set with one triangle load electromagnetic coil with each three sets of coils; the inner stator end is located with round Hall sensor fixing board with six Hall sensor; the six Hall sensors output ends are connected to the input ends of the motor running circuit and the triangle load electromagnetic coil each connection end is separately connected to the motor running circuit switch element output ends.

Description

1. Technical field [0001] The invention relates to a direct-current motor, in particular to a program-controlled brushless direct-current motor operated by a preset fixed electromechanical program. 2. Background technology [0002] As we all know, the basic conditions for the normal operation of brushless DC motors are: 1. After the power is turned on, the fixed magnetic poles and moving magnetic poles (permanent magnet magnetic poles and electromagnetic coil magnetic poles) of the motor are in any mutual position in the circumferential air gap magnetic field, and the interaction The electromagnetic vector resultant force F is greater than zero, otherwise the motor will have a dead point when starting; 2. Before the electromagnetic torque T interacting with the fixed magnetic pole after the moving magnetic pole rotates and approaches the zero position, the electromagnetic coil magnetic pole must be reversed, otherwise the motor efficiency will be low. [0003] Deduce from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/08H02P6/10
Inventor 王汝新黄菊明
Owner 王汝新
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