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Permanent magnet generator

A generator, permanent magnet technology, applied in wind power generation, synchronous motors with static armatures and rotating magnets, electromechanical devices, etc., can solve problems such as difficult repair and maintenance of the stator

Inactive Publication Date: 2012-07-18
STELLENBOSCH UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, stators are still difficult to repair and maintain, and still require highly skilled technicians and expensive equipment to do them

Method used

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  • Permanent magnet generator
  • Permanent magnet generator
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Examples

Experimental program
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Embodiment Construction

[0036] exist figure 1 and figure 2 In the embodiment of the invention illustrated in , the generator is indicated as a whole by the reference numeral (1) and comprises a main support structure (3) in the form of a shaft, which acts as a the supporting part. The non-rotating shaft in this design is secured to the wind turbine tower or nacelle (not shown) by means of a non-permanent bolt connection through bolt holes (5) in the shaft base (7). Two similar deep groove ball bearings (9) are provided on the shaft. Bearings connect the stationary shaft (3) to the rotating rotor (11). To keep the bearings in place and spaced apart, aluminum spacers (13) slide on the shaft between the bearings. A circular clamp or snap ring (15) prevents the front bearing (17) from slipping off the end of the shaft, while a step (19) in the shaft base (7) holds the rear bearing (21) in place.

[0037] The rotor bearing hub (23) and front plate (29) are used to engage the two rotor parts with the...

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PUM

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Abstract

A new configuration for a double-sided rotor, radial flux, air-cored, permanent magnet electric generator (1 ) is disclosed. The generator (1 ) includes two radially spaced apart rotor portions (33, 35) defining an air gap between them and each having a plurality of alternating polarity permanent magnets (41 ) arranged on their inner surfaces, mounted for rotation in the air gap. A modular stator (43) is positioned in the air gap and includes a base (45) having attachment formations (60) spaced apart about its surface and a plurality of individually moulded, polymeric resin stator modules (53). Each stator module (53) has complementary attachment formations (59) for attachment to the base (45) and includes at least one non-overlapping compact wound coil (61 ) which is embedded within the resin.

Description

technical field [0001] This invention relates to generators. More specifically, the present invention relates to the design of permanent magnet generators for use with wind turbines. The invention extends to a method for manufacturing a permanent magnet generator. Background technique [0002] Generators are devices that convert mechanical energy into electrical energy and are well known. The basic principle of operation of these generators can be found in Faraday's law, which in its most basic form states that a potential difference is created between the ends of an electrical conductor passing perpendicularly through a magnetic field. More specifically, the electromotive force (EMF) induced in any closed circuit is equal to the time rate of change of the magnetic flux through the circuit. [0003] A generator in its simplest form consists of a rotor and a stator. The rotor is the rotating part of the generator and the stator is the stationary part. One particular clas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/18H02K23/58H02K16/02H02K1/04
CPCH02K7/1838Y02E10/725H02K2213/12H02K3/47H02K21/12Y10T29/49012Y02E10/72
Inventor J·A·斯泰格曼M·J·坎珀
Owner STELLENBOSCH UNIVERSITY