Double-feed type variable speed constant frequency wind turbine generator sets

A wind turbine, variable speed and constant frequency technology, applied in wind turbine combination, wind turbine, wind turbine control and other directions, can solve the problems of complex control implementation, complex vector decoupling calculation, and insignificant control target effect.

Inactive Publication Date: 2007-08-01
SHENYANG POLYTECHNIC UNIV
View PDF0 Cites 13 Cited by
  • 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,

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
  • Double-feed type variable speed constant frequency wind turbine generator sets
  • Double-feed type variable speed constant frequency wind turbine generator sets
  • Double-feed type variable speed constant frequency wind turbine generator sets

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0093] Example 1: As shown in Figure 1, the present invention includes a front nacelle chassis 9, a rear nacelle chassis 10, a generator 8, a speed increase box 1, and a wind wheel. The wind wheel includes a hub 5 and blades, and three ports between the blades and the hub 5. Connection, the connecting surface between the front nacelle chassis 9 and the rear nacelle chassis 10 is an inclined plane, the rear nacelle chassis 10 is fixed on the tower, the generator 8 is placed on the rear nacelle chassis 10, and the speed increasing box 1 is placed on the front nacelle chassis 9 On; the generator 8 is connected to the speed increasing box 1 through the coupling 7, and the speed increasing box 1 and the hub 5 are connected through the end cover 3.

[0094] As shown in Figures 3 and 4, the inclination angle of the slope between the front cabin chassis 9 and the rear cabin chassis 10 in this example is 40°; the front cabin chassis 9 is fixed to the rear cabin chassis 10 by bolts and hook...

Example Embodiment

[0106] Embodiment 2: The present invention includes a front nacelle chassis 9, a rear nacelle chassis 10, a generator 8, a speed increase box 1, and a wind wheel. The connecting surface between the front nacelle chassis 9 and the rear nacelle chassis 10 is an inclined plane, and the rear nacelle chassis 10 is fixed On the tower, the generator 8 is placed on the rear nacelle chassis 10, and the speed-increasing box 1 is placed on the front nacelle chassis 9; the generator 8 is connected to the speed-increasing box 1 through a coupling 7, and the speed-increasing box 1 is connected to the hub 5. They are connected by end caps 3.

[0107] As shown in Figures 3 and 4, the inclination angle of the slope between the front cabin chassis 9 and the rear cabin chassis 10 in this example is 38°; the front cabin chassis 9 is fixed to the rear cabin chassis 10 by bolts and hooks on it. . Due to the action of the inclined plane and the hook, all the forces borne by the front section of the nace...

Example Embodiment

[0115] Embodiment 3: The structure of this embodiment is the same as that of Embodiment 2, as shown in Figure 2, except that the inclination angle of the inclined plane between the front nacelle chassis 9 and the rear nacelle chassis 10 is 43°;

[0116] Spindle diameter: d ≥ A 0 p / n 3 ≥ 334.2 mm

[0117] A 0 = 9550000 / 0.2 [ τ ] T 3 ,

[0118] [τ] T ——Allowable torsion shear stress, 200Mpa,

[0119] P——The power transmitted by the shaft, 1000Kw,

[0120] n——The speed of the shaft, 1600r / min.

[0121] The structure of the end cover 3 in this example is shown in Figure 2. The end cov...

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 dual-feedback variable-speed constant-frequency wind-driven generator, comprising a chassis of front cabin, a chassis of back cabin, a generator, an accelerating box, a wind wheel, and a controller. The connecting face between the chassis of front cabin and the chassis of back cabin is inclined. The chassis of back cabin is fixed on the tower support. The generator is arranged on the chassis of back cabin. The accelerating box is arranged on the chassis of front cabin. The generator via the coupler is connected with the accelerating box. The accelerating box and the hub of wind wheel are connected via the end cover. The controller is connected with the generator, the accelerating box, the blade of wind wheel, and the main axle. The invention can improve the stability of wind-driven generator. The inclined chassis of cabin can reduce the axial interference of accelerating box and the generator, and stabilize the chassis. The invention also realizes the speed adjustment of variable-speed wind-driven generator, to avoid complex vector calculation.

Description

technical field [0001] The invention belongs to the technical field of wind power generators, in particular to a double-fed variable-speed constant-frequency wind power generator. Background technique [0002] Wind energy utilization is the most mature type of renewable energy technology. Wind power generators are equipment that convert wind energy into conventional electrical energy. There are many types of such equipment. The transmission shaft of the existing horizontal-axis three-blade grid-connected wind turbine is horizontal, that is, the rotational speed of the wind wheel is transmitted to the generator through the main shaft, the gearbox and the coupling. One end of the main shaft is connected to one end of the hub in a megawatt-level wind turbine. In this way, the main shaft not only bears the torque of the wind wheel, but also receives the bending moment and axial aerodynamic thrust of the wind wheel. Due to the weight of the wind wheel It is relatively large, so ...

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
IPC IPC(8): F03D9/00F03D7/00H02P9/14H02P9/04F03D9/25
CPCY02E10/723Y02E10/72
Inventor 姚兴佳王湘明杨树人邢作霞孙传中
Owner SHENYANG POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap