Permanent magnet generator for offshore wind power and working method thereof

A permanent magnet generator and offshore wind power technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of reducing wind power generation efficiency, difficulty in maintenance and repair, and adding electric equipment, so as to avoid downtime accidents and maintenance needs , avoid ionization and electric corrosion, reduce the effect of weight

Pending Publication Date: 2022-04-29
CRRC WIND POWER(SHANDONG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Water jacket cooling, air-to-air cooling and direct air cooling are all used on a large scale on land. The maintenance of generators on land is relatively convenient, but for offshore wind power generation, there are great difficulties in maintenance and repair;
[0005] 2. Wa

Method used

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  • Permanent magnet generator for offshore wind power and working method thereof
  • Permanent magnet generator for offshore wind power and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1:

[0036] like figure 1 As shown, this embodiment provides a permanent magnet generator for offshore wind power, which at least includes a stator and a rotor 2, and a cooling cavity is provided;

[0037] The rotor 2 is located outside the cooling cavity, and the stator is located inside the cooling cavity; the cooling cavity is filled with a cooling medium 18;

[0038] In this embodiment, the cooling cavity can be set as a glass fiber reinforced plastic cavity; such as figure 1 and figure 2 As shown, the FRP cavity 1 is composed of a cavity FRP 10 and an inner cavity FRP 17 to form a closed cooling cavity except the outlet 11 and the inlet 5 .

[0039] In this embodiment, as figure 1 As shown, the stator includes a stator core 3, and one end of the stator core 3 is connected with a generator base 9; the generator base 9 is located inside the cooling cavity and is immersed in the cooling medium 18 The elastic connection between the stator iron core 3 and ...

Example Embodiment

[0049] Example 2:

[0050] This embodiment further describes the permanent magnet generator for offshore wind power in Embodiment 1; specifically:

[0051] The stator core 3 and the stator coil form a whole and are embedded in a steel cage 7 made of welded steel pipes to form the generator stator. The stator has no stator casing, which not only reduces the weight of the stator, but also facilitates the heat dissipation of the stator core and coil; the whole The stator core, stator coil and stator cage 7 are welded to the generator base through the elastic support composed of steel pipes, which can effectively reduce the high-frequency vibration generated during the operation of the generator and transmit to the base, so as to avoid damage to the glass fiber reinforced plastic cavity under the base. Damage to the lower seat.

[0052] The entire stator core 3, stator coil, stator cage 7 and generator base 9 form a whole and are placed in a closed structure composed of glass fib...

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PUM

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Abstract

The invention provides a permanent magnet generator for offshore wind power and a working method thereof. The permanent magnet generator at least comprises a stator, a rotor and a cooling cavity, the rotor is located outside the cooling cavity, and the stator is located inside the cooling cavity; the cooling cavity is filled with a cooling medium; according to the invention, the whole stator is soaked in the cooling medium, so that maintenance-free or maintenance-frequency-reduced operation of the offshore unit is realized; the cooling device is suitable for cooling offshore wind turbines.

Description

technical field [0001] The invention belongs to the technical field of generator stator cooling, and in particular relates to a permanent magnet generator for offshore wind power and a working method thereof. Background technique [0002] A wind turbine is a power device that converts wind energy into mechanical work, which drives the rotor to rotate, and finally outputs alternating current; wind turbines generally include a wind wheel, a generator (including devices), a steering device (tail), a tower, a limiter, and a wind turbine. Wind turbines generally adopt water jacket cooling, air-to-air cooling and direct air cooling. [0003] The inventors have found that the existing wind turbine cooling methods have the following disadvantages: [0004] 1. Water jacket cooling, air-to-air cooling and direct air cooling are all used on a large scale on land. The maintenance of generators on land is relatively convenient, but for offshore wind power generation, there are great dif...

Claims

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Application Information

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IPC IPC(8): H02K9/197H02K9/20H02K9/22
CPCH02K9/197H02K9/20H02K9/225
Inventor 赵磊荆中金狄振峰苗云涛吴永鹏
Owner CRRC WIND POWER(SHANDONG) CO LTD
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