Megawatt semi-direct driving wind-power generator group

A wind turbine and direct drive technology, applied in the direction of wind motor combination, wind engine, wind engine control, etc., can solve the problems of complex vector decoupling calculation, complex control implementation, and inconspicuous control target effect, and achieve system control High precision, good running stability and light weight effect

Inactive Publication Date: 2007-08-15
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current wind turbines all use the stator field-oriented vector control method to achieve rotor speed regulation, which has complex vector decoupling calculations, complex control implementation, and the control target effect is not obvious

Method used

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  • Megawatt semi-direct driving wind-power generator group
  • Megawatt semi-direct driving wind-power generator group
  • Megawatt semi-direct driving wind-power generator group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0044]Embodiment: As shown in Figure 1, the speed-up gearbox 1 of this example adopts a one-stage planetary speed-up gearbox structure, the speed ratio is 1:8, and the motor uses a low-speed permanent magnet three-phase synchronous generator with a power of 1 megawatt. . The present invention includes a wind wheel 19, a variable pitch device, a main shaft, a nacelle chassis 7, a yaw motor 6, a speed increaser 1, a coupling 3, a generator 4 and a control system 5, and the wind wheel 19 includes a wind wheel blade 10 and a hub 9. The wind rotor blade 10 is connected to the wheel hub 9 through the variable pitch bearing 15, the wheel hub 9 is connected to the outer ring of the variable pitch bearing 15, the wind rotor blade 10 is connected to the inner ring of the variable pitch bearing 15, and a deflector is fixed on the chassis 7 of the nacelle. Aeromotor 6, generator 4, generator 4 is connected to speed-up box 1 through coupling 3, brake 2 is installed on the output shaft of s...

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PUM

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Abstract

A megawatt-level semi-direct driving wind generator comprises a wind wheel, a distance changer, a main axle, a speed accelerating box, a coupler, a generator, a cabin chassis, a bias motor and a control system. The chassis is fixed with the bias motor and the generator, the accelerating box is fixed with the side wall of the chassis, the accelerating box is first-stage planet accelerating gear box, and the motor is low-speed permanent magnetic three-phase synchronous generator. The invention can stabilize the transmission of transmitter, reduce impact, and reduce sealing demand or the like, with adjustable installed height, simple structure, high strength and accurate angle control on distance change as 0.1 degree, to output constant power.

Description

technical field [0001] The invention belongs to the technical field of wind power generators, in particular to a megawatt-level semi-direct drive wind power generator. Background technique [0002] The low-speed permanent magnet wind turbine is a form of variable-speed constant-frequency wind turbine, which is determined by the drive structure of the wind turbine. Due to the increasingly mature power electronics technology, it allows the generator to generate electricity of different frequencies at any speed. After the power electronic device is rectified, it is then inverted and connected to the grid. Usually, in order to reduce the failure rate of the gearbox and reduce the maintenance cost, the drive chain structure adopts a low-speed permanent magnet wind turbine structure without a gearbox or a gear box speed-up, so that the structural characteristics of the unit are better, and the unit meets the long-term reliable operation of the unit. Require. Theoretically speaki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/00F03D7/04F03D9/25
CPCY02E10/723Y02E10/72
Inventor 姚兴佳潘建刘颖明王晓东李科王超
Owner SHENYANG POLYTECHNIC UNIV
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