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Self-starting permanent magnet synchronous machine

A permanent magnet synchronous motor, self-starting technology, applied in the direction of synchronous machine, synchronous machine parts, electrical components, etc., can solve the problems of complex manufacturing process and high production cost of self-starting permanent magnet synchronous motor

Inactive Publication Date: 2012-03-14
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of the squirrel cage, the manufacturing process of the self-starting permanent magnet synchronous motor is complicated and the production cost is high

Method used

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  • Self-starting permanent magnet synchronous machine
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  • Self-starting permanent magnet synchronous machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] like figure 2 As shown, the self-starting permanent magnet synchronous motor of the present invention includes: it comprises a rotor iron core 1 and a stator iron core 2; There is a winding 21 on it, which is divided into a main winding 22 and an auxiliary winding 23; the outer circumference of the rotor core 1 is dug inward with two rotor slots 13, and the raised part between the two rotor slots 13 forms two The rotor teeth 14, the two rotor slots 13 and the two rotor teeth 14 form two pairs of tooth structures and slot structures, the rotor slots 13 and the rotor teeth 14 are arranged alternately, and the circumferential lengths of the two are the same and are evenly distributed in the The outer circumference of the rotor core 1, and preferably the radial radius of the pair of rotor slots 13 is constant; the rotor slots 13 and the rotor teeth 14 are arranged symmetrically along the magnetic pole centerline, and the rotor teeth 14 are arranged at the magnetic pole cen...

Embodiment 2

[0022] like image 3 As shown, the difference from Embodiment 1 is that in this embodiment, the rotor core 3 and the stator core 4, preferably, the radius of the rotor slot 33 arranged on the outer periphery of the rotor core 3 changes gradually along the circumferential direction in the same direction , and the trend of gradual change is not limited, it is gradually increasing or decreasing gradually. Its working principle is the same as that of the first embodiment.

Embodiment 3

[0024] like Figure 4 As shown, in this embodiment, the rotor core 5 and the stator core 6 are provided with two short stator teeth 64 and two long stator teeth 63 alternately on the inner circumference of the stator core 6, and the two short stator teeth 64 Form two pairs of tooth structures and slot structures with the two long stator teeth 63, and the inner diameters of the short stator teeth 64 and the long stator teeth 63 are on concentric circles, and the short stator teeth 64 and the long stator teeth 63 are along the main winding The central line of 65 or the central line of secondary winding 66 are arranged symmetrically, so that there are unequal air gaps in the self-starting permanent magnet synchronous motor. Both the short stator teeth 64 and the long stator teeth 63 can be arranged at the center line of the main winding 65. Similarly, the long stator teeth 63 and the short stator teeth 64 can also be arranged at the center line of the auxiliary winding 66. This e...

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PUM

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Abstract

The invention discloses a self-starting permanent magnet synchronous machine, which comprises a rotor core and a stator core, wherein the stator core is provided with windings, the windings include a main winding and a secondary winding, the outer circumference of the rotor core or the inner circumference of the stator core is provided with at least two pairs of tooth and slot structures, and the tooth structures and the slot structures are staggered; unequal air gaps exist in the self-starting permanent magnet synchronous machine, the change of the magnetic resistance between a stator and a rotor is larger, and according to the minimum principle of the magnetic resistance, the rotor core is always maintained at a position with the minimum magnetic resistance, so the rotor core can rotate along with the rotation of a magnetic filed of the stator so as to start the self-starting permanent magnet synchronous machine.

Description

technical field [0001] The invention relates to the field of motors, in particular to a self-starting permanent magnet synchronous motor. Background technique [0002] like figure 1 As shown, the prior art self-starting permanent magnet synchronous motor includes: a stator core and a rotor core; the rotor includes magnetic isolation holes 100, several squirrel cage 200 guide bars, magnetic steel and magnetic steel slots 300; the stator is provided with There are several stator windings. The squirrel cage is only used to start the motor. After the self-starting permanent magnet synchronous motor enters synchronous operation, the magnetic field generated by the magnet steel and the magnetic field generated by the stator winding will interact to maintain the synchronous operation of the self-starting permanent magnet synchronous motor, and the squirrel cage will no longer work. However, due to the existence of the squirrel cage, the manufacturing process of the self-starting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/00H02K21/02H02K1/14H02K1/24
Inventor 黄辉胡余生陈东锁张小波刘健宁
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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