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Efficient vertical-axis switched reluctance breeze generator

A switched reluctance and generator technology, which is applied to wind turbines, wind turbines, and combinations of wind turbines at right angles to the wind direction, can solve the problems of low wind energy utilization, complex control systems, and low operating speeds, so as to improve wind energy. Utilization rate, overall compact structure, and the effect of improving reliability

Pending Publication Date: 2022-03-18
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional vertical axis wind turbines mainly adopt two structures, one is resistance type Savonius (Savonius) wind turbine, this structure can provide a large starting torque, good starting performance, but the operating speed is low , leading to low power generation efficiency; the other is the lift-type Darrieus-φ or Darrieus-H wind turbine, the speed of the lift blades of this structure can reach 3-4 times the wind speed, and the power generation efficiency is high, but Because the angle of attack of the lift blade is too large, it is difficult to generate enough lift when the wind speed is low, resulting in poor starting performance. Generally, it needs to rely on the electric motor to start, which not only requires an additional power supply but also complicates the control system
Therefore, it is difficult to obtain practical application of the Savonius wind turbine or Darrieus wind turbine set separately. At present, the Darrieus-Savonius combined wind turbine is widely used. The Sri Lankan wind wheel provides the starting torque, and the Darrieus wind wheel is used to make up for the low efficiency. However, in the case of high wind speed, the Savonius wind wheel will generate greater wind resistance. The generator still cannot reach a high speed, and the problem of low utilization rate of wind energy is still prominent

Method used

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  • Efficient vertical-axis switched reluctance breeze generator
  • Efficient vertical-axis switched reluctance breeze generator
  • Efficient vertical-axis switched reluctance breeze generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In the initial state, the Darrieux H-type wind rotor 7 has a fixed three-blade structure, and the blades are drop-shaped, and are evenly distributed along the circumference of the main shaft at intervals of 120°; the improved Savonius-type wind rotor is in the unfolded state as figure 1 and image 3 As shown, due to the large starting torque of the improved Savonius type wind wheel, the start-up of the wind turbine can be realized when the wind speed reaches 2m / s, and the switched reluctance generator 16 begins to generate electric energy.

Embodiment 2

[0028] When the wind speed reaches more than 10m / s, the wind speed sensor 9 transmits the signal to the wind wheel shaft servo drive system controller 15, and the wind wheel shaft servo drive system controller 15 sends an electric signal and utilizes the electric energy sent by the switched reluctance generator 16 to simultaneously Drive the upper wind wheel shaft 2 and the lower wind wheel shaft 5 to rotate clockwise, as shown in Figure 5, until the Savonius wind wheel is completely closed into a cylinder as shown in Figure 5. figure 2 and Figure 4 shown. This eliminates the wind resistance brought by the traditional Savonius-type wind wheel under the condition of high wind speed, and only utilizes the Darrieus-type wind wheel 7 to efficiently generate electricity, thereby improving the power generation efficiency of the power generation system.

Embodiment 3

[0030] When the wind speed drops below 10m / s, the wind speed sensor 9 transmits the signal to the wind wheel shaft servo drive system controller 15, and the wind wheel shaft servo drive system controller 15 sends an electric signal and utilizes the electric energy sent by the switched reluctance generator 16 Simultaneously drive the upper wind wheel shaft 2 and the lower wind wheel shaft 5 to rotate counterclockwise until the improved Savonius wind wheel rotates 90° counterclockwise, which returns to the initial state as Figure 6 As shown, this state makes the windward area of ​​the improved Savonius wind rotor the largest, combined with the excellent start-up performance of the switched reluctance generator, the wind energy can be utilized to the greatest extent, and wind power generation can be realized.

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Abstract

The invention provides an efficient vertical-axis switched reluctance breeze generator which mainly comprises improved Savonius wind wheels (1, 4, 11, 12 and 13), Darrieus wind wheels (7, 8 and 9), improved Savonius wind wheel rotating shaft servo driving systems (2, 3, 5, 6, 14 and 15) and switched reluctance generators (10 and 16). Wherein the double-layer improved Savonius wind wheel can change the unfolding or closing state of the wind wheel according to the real-time wind speed, so that the excellent starting performance of the switched reluctance generator is guaranteed, the larger starting torque can be achieved, the wind resistance brought by a traditional Savonius wind wheel when the wind speed is large is greatly reduced, and the wind resistance of the switched reluctance generator is improved. And efficient breeze power generation is realized. According to the efficient vertical-axis switched reluctance breeze generator, the rotatable double-layer improved Savonius type wind wheel is provided, the structure is simple, implementation is convenient, reliability is high, and the efficient vertical-axis switched reluctance breeze generator is suitable for small and medium-sized distributed breeze power generation occasions.

Description

technical field [0001] The invention relates to an improvement of the structure of a breeze generator, in particular to a blade mechanism of a vertical axis switched reluctance wind generator. Background technique [0002] At present, wind turbines are mainly divided into two types, one is the horizontal axis wind turbine, and the other is the vertical axis wind turbine. The vertical axis wind turbine has the ability to capture wind energy in all directions in the vicinity of the city, the operating noise is small, the starting wind speed is small, and because of its structural characteristics, the central tower does not need to carry too much weight of the equipment, so the tower consumables Low cost and other advantages have attracted extensive attention from researchers at home and abroad in recent years. It is mainly used in urban public lighting, residential areas and other areas where horizontal axis wind turbines are difficult to apply. It can also be widely used in v...

Claims

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Application Information

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IPC IPC(8): F03D9/25F03D3/06F03D3/02F03D3/00F03D7/06
CPCF03D9/25F03D3/062F03D3/061F03D3/02F03D3/005F03D7/06F05B2270/32Y02E10/74Y02B10/30
Inventor 明兴莹李红伟罗华林
Owner SOUTHWEST PETROLEUM UNIV