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Line start permanent magnet electric motor

A magnet and riveting technology, applied in the field of direct start permanent magnet motor, can solve the problem of increasing rotor impedance

Inactive Publication Date: 2012-10-03
ARCELIK AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conductor bars manufactured elsewhere can only be placed with clearance into the slanted and helical rotor slots thus increasing the resistance of the rotor

Method used

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  • Line start permanent magnet electric motor
  • Line start permanent magnet electric motor
  • Line start permanent magnet electric motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] A direct start permanent magnet motor (1) includes a stator (2) and a rotor (3).

[0040] The rotor (3) includes a cylindrical iron core (4) with a shaft hole (D) in its center, which is composed of magnetic copper laminates (L) stacked on top of each other, by embedding in the axial direction One or more magnets (5) set in the iron core (4) to provide synchronous operation, set the magnet insertion hole (6) to embed the magnet (5) around the shaft hole (D), and close the iron core (4 ) more than one rotor slot (7) in the area of ​​the outer periphery, extending in the axial direction in such a way that the skew angle is equal to zero or not zero, that is, along the same direction as the axis of the core (4) shaft hole (D) Or extending in a direction inclined relative to the shaft hole (D), more than one conductive strip (8) generated by injecting aluminum into the rotor slot (7) in the injection molding (K), located in the iron core (4) 1st surface (9) on the side of ...

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Abstract

The present invention relates to a line start permanent magnet motor (1) having asynchronous properties at start-up and synchronous features in continuous operation, the rotor (3) of which comprises a core (4) formed of magnetic steel rotor laminations (L), more than one magnet (5) embedded in the core (4), more than one conductor bar (8) and end ring (10, 110) formed by injecting aluminum into the rotor slots (7) and at least one end ring (10, 110) produced separately to be mounted on the core (4) afterwards and wherein the displacement of the magnets (5) is prevented.

Description

technical field [0001] The present invention relates to direct start permanent magnet motors which operate asynchronously at start and synchronously after start. Background technique [0002] Especially in machines where high starting torque and high operating efficiency are important, e.g. in compressors of cooling plants, hybrid motors are used which have the characteristics of an asynchronous motor during starting and a synchronous motor during continuous operation characteristic. Hybrid motors are often referred to as "direct start permanent magnet motors". In the rotor of a hybrid motor, in addition to using rotor bars in the rotor slots that have conductive and easily formable properties such as aluminum, and end turns for mechanically and electrically connecting the terminals of these rotor bars on both surfaces of the rotor In addition to the cage (squirrel cage) structure, permanent magnets embedded in the rotor are also used. Hybrid motors are started asynchrono...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/22H02K1/27H02K21/46
CPCH02K17/165H02K1/276H02K21/46H02K17/20
Inventor G·阿巴斯西尔潘利C·艾瓦佐格鲁O·迪里F·比罗塞塞里克
Owner ARCELIK AS