CN102570748A

CN102570748A - Self-starting synchronous motor with permanent magnet with magnetic declination

Info

Publication number: CN102570748A
Application number: CN2010106036390A
Authority: CN
Inventors: 刘显海
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2012-07-11

Abstract

The invention relates to a self-starting synchronous motor with a permanent magnet with magnetic declination. A stator of the self-starting synchronous motor is fixed and consists of a rotating shaft (1), two groups of iron cores (2) and two groups of coils (3); the rotating shaft (1) and the iron cores (2) are relatively fixed; the coils (3) are wound on two iron cores (2) respectively; a rotor can rotate around the rotating shaft (1) of the stator and consists of a motor shell (5) and a permanent magnet (4); the motor shell (5) and the permanent magnet (4) are fixed; the permanent magnet (4) is a permanent magnet which is magnetized in the radial direction; the number of magnetic poles is equal to that after the coils (3) are electrified; and two groups of permanent magnets with equal magnetic poles are distributed in the circumferential space; the space difference is 360/(4*n) degrees; and n is the number of pairs of magnetic poles. The self-starting synchronous motor has the beneficial effects of self-starting the motor, reducing the cost, reducing the size, increasing the efficiency and guaranteeing higher reliability.

Description

A kind of permanent magnet has the self-starting synchronous motor of magnetic declination

Affiliated technical field

The present invention relates to a kind of permanent magnet has the self-starting synchronous motor of magnetic declination, and being characterized in has magnetic declination on two groups of permanent magnet spaces, and two groups of independently coils are arranged, and passes to the electric current that differs 90 °, but self-starting.

Background technology

At present, traditional permagnetic synchronous motor starts very difficulty, needs additional starting drive, but additional starting drive makes the manufacturing cost of whole motor increase, volume increases, weight increases, efficient reduces, reliability decrease.

Summary of the invention

In order to overcome the deficiency of existing permagnetic synchronous motor, the present invention provides the self-starting of a kind of ability, need not add the motor of starting drive, can make that manufacturing cost reduction, volume-diminished, weight saving, the efficient of whole motor improves, reliability is higher.

The technical solution adopted for the present invention to solve the technical problems is: motor stator partly adopts the permagnetic synchronous motor of twin coil drive, is two groups of independently armature coils in its stator; Rotor is the multipole permanent magnet of radial magnetizing, and number of magnetic poles equates with stator core groove number, differs 360/ (4*n) ° angle on the magnetic pole space, and n is the magnetic pole logarithm.

The invention has the beneficial effects as follows: can start voluntarily, can reduce cost, reduced volume, raise the efficiency, reliability is higher.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is front view of the present invention and cutaway view.

Fig. 2 is the front view and the cutaway view of stator of the present invention.

Fig. 3 is the front view and the cutaway view of rotor of the present invention.

Among the figure, 1. rotating shaft, 2. iron core, 3. coil, 4. permanent magnet, 5. shell

Embodiment

In Fig. 1, Fig. 2 and Fig. 3, the present invention is an external-rotor motor, and promptly rotor is in the stator external rotating; Its stator is fixed; Be made up of rotating shaft (1), two groups of iron cores (2) and two groups of coils (3), rotating shaft (1) and iron core (2) relative fixed are wound with one or more groups coil (3) respectively on two iron cores (2); Rotor can rotate around the rotating shaft (1) of stator, is made up of motor housing (5) and permanent magnet (4), and motor housing (5) and permanent magnet (4) are fixing; Permanent magnet (4) is the permanent magnet of radial magnetizing; Number of magnetic poles after the energising of number of magnetic poles and coil (3) equates, and on circuferential spacing, is distributed with the equal permanent magnet of two groups of number of magnetic poles; Its space differs 360/ (4*n) ° angle, and n is the magnetic pole logarithm.

The present invention can also be an inner rotor type motor, and promptly rotor rotates in stator interior.

Claims

1. a permanent magnet has the self-starting synchronous motor of magnetic declination, mainly is made up of stator and rotor.Its stator is fixed, and is made up of rotating shaft (1), two groups of iron cores (2) and two groups of coils (3), and rotating shaft (1) and iron core (2) are fixing, on iron core (2), are wound with coil (3); Rotor can rotate around the rotating shaft (1) of stator, is made up of motor housing (5) and permanent magnet (4), and motor housing (5) and permanent magnet (4) are fixing; Permanent magnet (4) radial magnetizing, the number of magnetic poles after the energising of number of magnetic poles and coil (3) equate, and on circuferential spacing, be distributed with the equal permanent magnet of two groups of number of magnetic poles, and its space differs 360/ (4*n) ° angle, and n is the magnetic pole logarithm.

2. a kind of permanent magnet according to claim 1 has the self-starting synchronous motor of magnetic declination, and its stator is an internal stator, and rotor is an external rotor;

3. a kind of permanent magnet according to claim 1 has the self-starting synchronous motor of magnetic declination, and its stator is an external stator, and rotor is an internal rotor.