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Interior magnet rotary electric machine

A technology of rotating electrical machines and magnets, applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuits, etc. Achieve high-speed rotation efficiency, suppress eddy current loss, and improve strength

Active Publication Date: 2017-08-01
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the process of winding fiber-reinforced metal wires for each rotor requires many man-hours (time), and the production of equipment and jigs is expensive.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0028] (Structure of IPM motor)

[0029] A magnet-embedded rotating electrical machine according to a first embodiment of the present invention is an IPM motor. as a sectional view figure 1 and as figure 1 Line II-II sectional view of figure 2 As shown, the IPM motor 1 has a rotor (rotator) 2 and a cylindrical stator (fixer) 3 arranged to face the rotor 2 on the radially outer side of the rotor 2 . The rotor 2 is disposed within the stator 3 so that its axis coincides with that of the stator 3 (coaxially). In addition, the rotor 2 and the stator 3 are housed in an unillustrated case.

[0030] (rotor)

[0031] The rotor 2 has a cylindrical rotor core 11 and two sets of permanent magnets 12 and 13 embedded in the rotor core 11 . Rotor 2 is able to figure 2 The C direction shown and its opposite direction of rotation.

[0032] The rotor core 11 is formed, for example, by laminating annular plate-shaped electrical steel sheets (35H300 or the like) in the axial direction....

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PUM

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Abstract

The invention provides an interior magnet rotary electric machine. This interior magnet rotary electric machine (1) is provided with a rotor (2) that has a rotor core (11) having two sets of permanent magnets (12, 13) embedded therein, a stator (3) that is disposed facing the rotor (2), and a fiber strengthened plastic tube (4) which sleeves and is fixed at the rotor core (11).

Description

technical field [0001] The present invention relates to a magnet-embedded rotating electrical machine including a rotor having a rotor core in which permanent magnets are embedded, and a stator arranged to face the rotor. Background technique [0002] Rotating electrical machines are the general term for electric motors, generators, motors and generators. When the magnet-embedded rotating electric machine of the present invention is used as an electric motor, the electric motor is called an IPM (Interior Permanent Magnet) motor. In contrast, a motor having a rotor in which permanent magnets are attached to the surface of a rotor core is called an SPM (Surface Permanent Magnet) motor. In addition, the IPM motor and the SPM motor are collectively referred to as a PM motor. [0003] The ultimate goal of the present invention is to achieve high-speed rotation of the IPM motor. As an invention related to the SPM motor rather than the IPM motor, but the subject is to solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27
CPCH02K1/276H02K1/28H02K21/14
Inventor 下田敏章笠井信吾
Owner KOBE STEEL LTD
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