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

Synchronous Permanent Magnet Machines

A permanent magnet and machine technology, applied in the direction of magnetic circuit, electromechanical device, magnetic circuit shape/style/structure, etc., can solve problems such as synchronous permanent magnet machine torque ripple

Active Publication Date: 2018-05-22
SIEMENS GAMESA RENEWABLE ENERGY AS
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] figure 1 The permanent magnet poles have the disadvantage that they produce appreciable torque ripple in synchronous permanent magnet machines

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
  • Synchronous Permanent Magnet Machines
  • Synchronous Permanent Magnet Machines
  • Synchronous Permanent Magnet Machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 2 A permanent magnet pole is shown having a flat base 11, a top surface 12 and parallel opposite sides 13a, 13b. The top surface 12 includes a flat central region 14 intermediate between opposing sides 13a, 13b and curved side regions 15a, 15b on either side of the flat central region 14. The curved side regions 15a, 15b meet the flat central region 14 at locations 16a, 16b.

[0014] The curved side region 15a comprises an arc of a circle 17a having a center "O1" and a radius "r1". The center O1 is offset by a distance "d1" on one side of a line 19 that (i) intersects the central region 14 of the base 11 and top surface 12 at right angles and (ii) is midway between the opposite sides 13a, 13b. The distance d1 is equal to the distance along the central region 14 between the straight line 19 and the location 16a where the central region 14 meets the curved side region 15a. The distance between the center O1 and the position 16a is equal to the radius r1. 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

The invention relates to a synchronous permanent magnet machine comprising a permanent magnet arrangement for generating a magnetic field with an approximately sinusoidal flux density distribution, the permanent magnet arrangement comprising a base (11, 21, 51, 71), a top surface ( 12, 22, 52, 72) and permanent magnet poles on opposite sides (13a, 13b, 23a, 23b, 53a, 53b, 73a, 73b), the top surface comprising a central region (14 , 24, 54, 74) and curved side regions (15a, 15b, 25a, 25b, 65a, 65b, 75a, 75b) meeting said central region on either side of said central region, characterized in that The gradient of the top surface is continuous at the intersections (16a, 16b, 26a, 26b, 66a, 66b, 76a, 76b) of the curved side regions and the central region.

Description

technical field [0001] The present invention relates to synchronous permanent magnet machines. [0002] More specifically, the present invention relates to a synchronous permanent magnet machine comprising a permanent magnet arrangement for generating a magnetic field having an approximately sinusoidal flux density distribution, the permanent magnet arrangement comprising a permanent magnet having a base, a top surface and opposite sides A pole, the top surface including a central region intermediate between the opposite sides and curved side regions meeting the central region on either side of the central region. Background technique [0003] One such permanent magnet arrangement is disclosed in the following publication: Optimum Design of Magnet Shape in Permanent-Magnet Synchronous Motors, L. Yong, Z. Jibin and L. Yongping, IEEE Transactions on Magnetics, Nov. 2003 Vol. 39 No. Issue 6, pp. 3523-3526. [0004] The form of permanent magnet poles used in this permanent mag...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/06
CPCH02K1/278H02K29/03
Inventor J-T.陈Z-Q.朱
Owner SIEMENS GAMESA RENEWABLE ENERGY AS