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Starting device for vertical axis wind turbine (VAWT)

A technology of wind generators and starting devices, which is applied in the direction of wind generator components, wind motors, wind motor combinations, etc., which can solve the problems of unsatisfactory low-speed start-up performance of generators, low wind energy utilization efficiency, and poor self-starting performance, etc., to achieve Optimize self-starting performance, improve wind energy utilization efficiency, and facilitate maintenance and use

Inactive Publication Date: 2014-04-02
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the objective limitations of the material and structure of the blades of the vertical axis wind turbine, its rated speed is lower than that of the wind rotor of the horizontal axis wind turbine, resulting in low wind energy utilization efficiency.
Secondly, when the wind speed is low, the self-starting performance of the vertical axis wind turbine is worse than that of the horizontal axis wind turbine, resulting in low power generation efficiency at low wind speed, which leads to the unsatisfactory low-speed start-up performance of the generator

Method used

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  • Starting device for vertical axis wind turbine (VAWT)
  • Starting device for vertical axis wind turbine (VAWT)
  • Starting device for vertical axis wind turbine (VAWT)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] see figure 1 , a starting device for a vertical-axis wind-driven generator, comprising a wind rotor main shaft 17 and a wind rotor, the wind rotor main shaft 17 is coaxially fixedly connected to the generator main shaft 14 through a coupling 13, and the wind wheel drives the wind rotor main shaft 17 to rotate, so that the generator Start, the wind rotor includes at least two generator blades 15, and evenly distributed around the wind rotor main shaft 17, the generator blades 15 are fixedly connected with the outer end of the blade support plate 16, when the generator blade 15 rotates, the blade support plate 16 The inner end transmits torque to the wind rotor main shaft 17, and then drives the wind rotor main shaft 17 to rotate. It is characterized in that: the inner end of the blade support plate 16 is fixed on the empty bearing seat 1, and the empty sleeve bearing seat 1 is installed through at least one bearing 4 On the wind wheel main shaft 17, the empty sleeve bea...

Embodiment 2

[0038] The technical solution of this embodiment is basically the same as that of Embodiment 1, especially in that:

[0039] In this embodiment, the connection between the outer friction discs 7, 11 and the wind wheel main shaft 17 is a spline. The splines have good guidance, can realize the dynamic connection between the mutually matched external friction discs 7, 11 and the wind wheel main shaft 17, and have the advantages of small stress concentration and strong load bearing capacity.

Embodiment 3

[0041] The technical solution of this embodiment is basically the same as that of Embodiment 1, especially in that:

[0042] In this example, see figure 2 and image 3 , In the present embodiment, there are 4 generator blades 15, and the slider mechanism of the pressing mechanism also includes 4 groups. Four generator blades 15 and four sets of slider mechanisms are used to form a vertical-axis wind turbine starting device, so that the device can capture wind energy as much as possible and at the same time optimize the structure of the device.

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Abstract

The invention discloses a starting device for a vertical axis wind turbine (VAWT). The device comprises a wind wheel main shaft and a wind wheel, wherein turbine blades are fixedly connected with the outer ends of blade support plates; when the turbine blades rotate, the inner ends of the blade support plates transmit torque to the wind wheel main shaft, and the wind wheel main shaft is driven to rotate; the inner ends of the blade support plates are fixed on a hollow sleeve bearing seat; the hollow sleeve bearing seat is arranged on the wind wheel main shaft through bearings; a wind speed adaptive clutch controls the hollow sleeve bearing seat to transmit power to the wind wheel main shaft; a driving part of the wind speed adaptive clutch is fixedly connected with the hollow sleeve bearing seat, and a driven part of the wind speed adaptive clutch synchronously rotates with the wind wheel main shaft and can move along the axial direction of the wind wheel main shaft, so that the driving part and the driven part of the wind speed adaptive clutch are engaged and disengaged; and when the driving part and the driven part are combined and synchronously rotate, the torque is transmitted to the wind wheel main shaft, a turbine main shaft is driven to rotate, and the VAWT is started. By the device, wind power utilization efficiency is improved, and the self-starting performance of the VAWT is optimized.

Description

technical field [0001] The invention relates to a starting device for a generator, which is particularly suitable for being installed on a lift-type vertical axis wind power generator with poor self-starting performance, and is used for improving the low-speed starting performance of the generator. Background technique [0002] A wind turbine is an energy conversion device that converts wind energy into mechanical energy, electrical energy or thermal energy. According to the position of the wind rotor shaft in the space direction, it can be divided into two types: horizontal axis wind turbines and vertical axis wind turbines. [0003] Vertical axis wind turbine (VAWT vertical axis wind turbine) is mainly divided into lift type and drag type from the structural principle. The drag type vertical axis wind turbine mainly uses the resistance generated by the air flowing through the blades as the driving force, while the lift type uses the lift generated by the air flowing throug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D11/02F03D3/06F03D9/00F16D43/08F16D43/18F03D9/25F03D15/20
CPCY02E10/74
Inventor 翟宇毅张宇锋万镭周宇曾德才刘树林周晓君刘吉成
Owner SHANGHAI UNIV
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