Unlock instant, AI-driven research and patent intelligence for your innovation.

Rotor for rotary electric machine

A technology of rotating electrical machines and rotors, which is applied in the field of rotors of rotating electrical machines and can solve problems such as increasing costs

Inactive Publication Date: 2006-04-05
NISSAN MOTOR CO LTD +1
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the necessity of these improvements, there will inevitably be a huge increase in cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotor for rotary electric machine
  • Rotor for rotary electric machine
  • Rotor for rotary electric machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] figure 1 A rotor 10 for a rotating electric machine according to a first embodiment of the present invention is shown. Such as figure 1 As shown, a rotor 10 of a rotating electric machine includes a rotor core 11 in the form of a disk, a shaft 12 as a rotation axis of the rotating core 11 , a plurality of N-pole permanent magnets 13 , and a plurality of S-pole permanent magnets 14 . The rotor core 11 is made of a magnetic material such as laminated magnetic steel sheets. The rotor core 11 includes a plurality of magnet groups, and each group includes a pair of N-pole permanent magnets 13 or a pair of S-pole permanent magnets 14 . A plurality of magnet pairs (or magnet groups) of N-pole permanent magnets 13 and a plurality of magnet pairs (or magnet groups) of S-pole permanent magnets 14 are disposed near the outer circumference of rotor core 11 . Each pair of N-pole permanent magnets 13 and each pair of S-pole permanent magnets 14 are arranged alternately along the c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A rotor for a rotary electric machine includes a rotor core made of magnetic material, and being in the form of a disk, and a plurality of magnet sets each including a pair of permanent magnets whose polarities are identical to each other. The magnet sets are arranged circumferentially in the rotor core so that the polarities of the magnet sets change alternately. The rotor core includes nonmagnetic portions each formed between adjacent two of the magnet sets.

Description

technical field [0001] The present invention relates to a rotor for a rotating electrical machine, and more particularly to a rotor for a rotating electrical machine such as a permanent magnet motor. Background technique [0002] Japanese Patent Application Laid-Open No. 2004-96868 shows a rotary electric machine as an IPM (Inner Permanent Magnet) motor, including a rotor, and a plurality of permanent magnets embedded in the rotor. The motor has a lower reluctance in a direction between an N pole of each permanent magnet and an S pole of one permanent magnet than in a direction along an N pole of one permanent magnet. The motor generates reluctance torque through the reluctance difference between the d-axis and q-axis. [0003] However, conventional IPM motors use NeFeBr permanent magnets with high BHmax. The NeFeBr permanent magnet is demagnetized in a state of high temperature or in a state of being applied with a high reverse magnetic field, and thus cannot generate ori...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02K1/27
Inventor 有满稔赤津观
Owner NISSAN MOTOR CO LTD