Wind turbine and its stator core and core module of the stator

A wind turbine and stator core technology, applied in the field of core modules, can solve the problems of weakening the content of the 5th and 7th harmonic magnetic field, increasing the volume and size of the generator, and exceeding the standard of vibration and noise of the generator, so as to improve the space Load back EMF wave, reduce no-load and load torque ripple, reduce vibration and noise

Active Publication Date: 2017-07-07
XINJIANG GOLDWIND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the capacity of large permanent magnet generators increases, the volume and size of the generator increase accordingly, resulting in an increase in the cost of manufacturing and transportation of the generator stator
The stator core splitting technology can well solve the manufacturing and transportation problems caused by the increase in the size of the stator. The single-layer winding structure can realize the splitting of the stator core, but because the single-layer winding adopts a full-pitch design, it cannot effectively Weakening the content of the 5th and 7th harmonic magnetic field will bring about a large torque ripple problem, causing the vibration and noise of the generator to exceed the standard

Method used

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  • Wind turbine and its stator core and core module of the stator

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Embodiment 1

[0038] Such as figure 1 As shown in FIG. 1 , it is a schematic structural diagram of the core module of the stator according to Embodiment 1 of the present invention. The iron core module of the stator of the wind power generating set in the embodiment of the present invention, the overall size of the iron core module conforms to the principle that the number of slots per pole and each phase is q=1, and the iron core module is provided with two three-phase winding units, two three-phase winding units The electrical angle difference between them is 30 degrees.

[0039] Further, the core module 4 can have a plurality of slots for accommodating coils, each coil can be nested in two slots, and the slots can be divided into the first slot 41 for accommodating one coil side and the first slot for accommodating two coil sides The second alveolar 42. The number of the second slot 42 may be one, and may be arranged in the middle of the slot, and the number of the first slots 41 on th...

Embodiment 2

[0047] The present embodiment relates to a stator core composed of the core modules of the above embodiments and a wind power generator including the core.

[0048] After a certain number of the above-mentioned core modules are combined, the stator core of the embodiment of the present invention can be formed. Specifically, corresponding to the number of slots of the above-mentioned core modules, on the premise of adopting the design scheme of 432 slots on the circumference of the entire iron core, the number of core modules constituting the entire iron core can be 36, 18, 12, 9, 6, 4. Such as Figure 4 As shown, it is one of the structural schematic diagrams of the rotor poles of the embodiment of the present invention, and the entire stator core includes 36 such as figure 1 The core module 4 shown.

[0049] After the stator and the rotor including the above-mentioned stator core are assembled, the wind power generator according to the embodiment of the present invention i...

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Abstract

The present invention provides a wind power generator and its stator core and stator core module. The overall size of the core module conforms to the principle that the number of slots per pole and phase is q=1. Two three-phase winding units are arranged in the core module , the electrical angle difference between the two three-phase winding units is 30 degrees. In the wind power generator, its stator core, and the core module of the stator in the embodiment of the present invention, by changing the arrangement of the windings in the stator core module, the electrical angle difference between the two three-phase winding units is 30 degrees, thereby effectively Weaken the 5th and 7th winding harmonic magnetomotive force.

Description

technical field [0001] The invention relates to a wind power generator, its stator core and a stator core module, and belongs to the technical field of wind power generation. Background technique [0002] As the capacity of large permanent magnet generators increases, the volume and size of the generators also increase accordingly, resulting in an increase in the cost of manufacturing and transporting the stator of the generator. The stator core splitting technology can well solve the manufacturing and transportation problems caused by the increase in the size of the stator. The single-layer winding structure can realize the splitting of the stator core, but because the single-layer winding adopts a full-pitch design, it cannot effectively Weakening the content of the 5th and 7th harmonic magnetic field will bring about a large torque ripple problem, causing the vibration and noise of the generator to exceed the standard. [0003] Therefore, in view of the problem that the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/16H02K3/12H02K3/28
CPCH02K1/165H02K3/12H02K3/28H02K1/278H02K1/16H02K29/03H02K15/03H02K2213/03H02K2213/12H02P25/22H02K1/148H02K7/183H02K2201/06Y02E10/72
Inventor 高亚州夏静赵祥
Owner XINJIANG GOLDWIND SCI & TECH
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