Rail type wind driven generator
By using conductive slip rings in rail-mounted wind turbines, combined with position detection modules and stepper motor control, the problem of high current collector failure rate was solved, achieving long life and maintenance-free operation of the conductive slip rings.
Patent Information
- Application Number
- CN202410692032.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-12-02
AI Technical Summary
In existing methods of leading out power lines for rail-mounted wind turbines, the current collectors have a high failure rate, short lifespan, and require regular maintenance. Furthermore, the long sliding distance of the current collectors reduces their service life.
A conductive slip ring is used instead of a current collector. The conductive slip ring is set at the center of the circular track. The rotation of the conductive slip ring is controlled by a position detection module and a stepper motor to keep the relative position with the blade constant and reduce the sliding distance.
This improves the service life of conductive slip rings, extends the maintenance cycle of wind turbines, and achieves maintenance-free operation. The service life of conductive slip rings with a sliding distance of less than 150 meters can reach 25 years, far exceeding the 1 month of current collectors.
Smart Images
Figure CN121055700A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wind power generation equipment technology, and in particular to a rail-mounted wind turbine. Background Technology
[0002] The current problem with the power cable lead-out method for rail-mounted wind turbines is the high failure rate. Using traditional methods (sliding contact line, current collector) to lead out the generator power cable results in the current collector being a vulnerable component, leading to a high failure rate, instability, short lifespan, and requiring regular maintenance. Therefore, technically upgrading the power cable lead-out method for rail-mounted wind turbines is of great significance.
[0003] Related technologies such as Figures 4-5 As shown, the current collector needs to continuously slide and rub against the sliding line to transfer energy. The sliding distance of the current collector is very long. Currently, the product slides about 150 meters in one revolution, which greatly reduces the service life of the current collector.
[0004] Therefore, a new solution is urgently needed to address the above problems. Summary of the Invention
[0005] The purpose of this invention is to provide a rail-mounted wind turbine to solve the problems existing in the prior art and improve the service life of the device.
[0006] To achieve the above objectives, the present invention provides the following solution:
[0007] This invention provides a rail-mounted wind turbine, comprising: a circular rail, blades, a generator, a wind power inverter, and a conductive slip ring. The blades are slidably mounted on the circular rail. The generator includes a stator coil portion and a rotor portion. The rotor portion is fixed on the circular rail, and the stator coil portion is fixed on the blades. The conductive slip ring is disposed at the center of the circular rail. The input end of the stator coil and the conductive slip ring are connected via a cable, and the output end of the conductive slip ring is connected to the wind power inverter.
[0008] Preferably, it further includes a control module, a position detection module, and a stepper motor. The position detection module is used to detect the rotation angle of the blade and transmit it to the control module. The inner ring of the conductive slip ring is fixed to the shaft of the stepper motor, the outer ring of the conductive slip ring is fixedly set, and the input end of the conductive slip ring is set on the inner ring. The control module controls the stepper motor to drive the inner ring to rotate according to the rotation angle of the blade so that the input end of the conductive slip ring and the blade maintain a constant relative position.
[0009] Preferably, the device has multiple blades, and the stator coils on the multiple blades are connected together and connected to the conductive slip ring via a cable.
[0010] Preferably, the position detection module includes a plurality of proximity switches evenly distributed on the circular track.
[0011] The present invention achieves the following technical effects compared to the prior art:
[0012] This invention uses a conductive slip ring at the center of a circular track. The path traversed by the conductive slip ring in one revolution is much smaller than that of the current collector, and its service life is much longer than that of the current collector. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 A top view of a track-mounted wind turbine provided in an embodiment of the present invention;
[0015] Figure 2 for Figure 1 The front view;
[0016] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;
[0017] Figure 4 This is a top view of a track-mounted wind turbine in the relevant product category;
[0018] Figure 5 for Figure 4 The front view;
[0019] In the diagram: 1-track; 2-blade; 3-column; 4-conductive slip ring; 5-stepper motor; 6-bolt and nut assembly; 7-bolt; 9-proximity switch; 11-cable.
[0020] 101 - Track for related products; 102 - Blades for related products; 103 - Slip line; 104 - Wind power inverter for related products; 105 - Cables for related products; 106 - Current collector. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Figures 4-5 This is a structural diagram of a product using a current collector and a sliding contact line in related technologies.
[0024] This invention provides a rail-mounted wind turbine, such as Figures 1-3 As shown, it includes: a circular track 1, blades 2, a generator, a wind power inverter, and a conductive slip ring 4. The wind power inverter, also known as a grid-connected inverter, is used to connect to the power grid. The blades 2 are slidably mounted on the circular track 1. The generator includes a stator coil section and a rotor section. The rotor section is fixed on the circular track 1, and the stator coil section is fixed on the blades 2. The conductive slip ring 4 is located at the center of the circular track 1. The input end of the stator coil and the conductive slip ring 4 are connected through a cable 11, and the output end of the conductive slip ring 4 is connected to the wind power inverter.
[0025] Currently, the current collector in existing products needs to continuously slide and rub against the contact line to transfer energy, with a total sliding distance of approximately 150 meters, which significantly reduces the lifespan of the current collector. However, this invention uses a conductive slip ring 4 at the center of the circular track 1. The distance the conductive slip ring 4 slides across the track 1 in one rotation is far less than 150 meters. For ease of understanding, let's assume the conductive slip ring 4 slides across the track 1 in one rotation is 0.5 meters. Therefore, the lifespan of the conductive slip ring 4 is 300 times that of the current collector. Roughly estimating the lifespan of the current collector in existing products to be one month, the lifespan of the conductive slip ring 4 in this invention is 25 years. The design lifespan of a wind turbine is generally 20 years. Therefore, the conductive slip ring 4 in the track-mounted wind turbine provided by this invention can be maintenance-free.
[0026] Specifically, it also includes a column 3, which is located at the center of the circular track 1 and is fixedly connected to the circular track 1. The column 3 provides support for the circular track 1. The wind power inverter and the conductive slip ring 4 are both located on the top of the column 3.
[0027] In some embodiments, the present invention further includes a control module, a position detection module, and a stepper motor 5. The position detection module is used to detect the rotation angle of the blade 2 and transmit it to the control module. The inner ring of the conductive slip ring 4 is fixed to the shaft of the stepper motor 5, the outer ring of the conductive slip ring 4 is fixedly set, and the input end of the conductive slip ring 4 is set in the inner ring. The control module controls the stepper motor 5 to drive the inner ring to rotate according to the rotation angle of the blade 2 so that the input end of the conductive slip ring 4 and the blade 2 maintain a constant relative position.
[0028] Specifically, the position of blade 2 is monitored in real time by proximity switch 9. After processing and calculation by the control module, the control module controls the operating speed and angular displacement of stepper motor 5 according to the calculation results, so that the relative position of the inner ring of conductive slip ring 4 and blade 2 remains unchanged. This results in a more stable transmission of electrical energy.
[0029] Preferably, the position detection module includes multiple proximity switches 9 evenly distributed on the circular track 1, specifically three, and the proximity switches 9 are model E2B-M18KN10-WZ-B12M, brand Omron.
[0030] In some embodiments, the stepper motor 5 is fixedly mounted on the column 3, and the conductive slip ring 4 is sleeved on the rotating shaft of the stepper motor 5. The outer ring of the conductive slip ring 4 is fixedly connected to the housing of the stepper motor 5 by a connector, a bolt 7, and a bolt and nut assembly 6. One end of the connector is connected to the outer ring by the bolt and nut assembly 6, and the other end is connected to the housing by the bolt 7.
[0031] In some embodiments, the present invention is provided with a plurality of blades 2, and the stator coils on the plurality of blades 2 are connected to each other and connected to a conductive slip ring 4 via a cable 11.
[0032] Specifically, the generators on blade 2 are connected by three-phase cables, which eventually converge into a single cable 11, which is connected to the inner ring of the conductive slip ring 4.
[0033] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.
Claims
1. A rail-mounted wind turbine, characterized in that: include: The system comprises a circular track, blades, a generator, a wind power inverter, and a conductive slip ring. The blades are slidably mounted on the circular track. The generator includes a stator coil section and a rotor section. The rotor section is fixed on the circular track, and the stator coil section is fixed on the blades. The conductive slip ring is located at the center of the circular track. The input end of the stator coil and the conductive slip ring are connected via a cable, and the output end of the conductive slip ring is connected to the wind power inverter.
2. The rail-mounted wind turbine generator according to claim 1, characterized in that: It also includes a control module, a position detection module, and a stepper motor. The position detection module is used to detect the rotation angle of the blade and transmit it to the control module. The inner ring of the conductive slip ring is fixed to the shaft of the stepper motor, and the outer ring of the conductive slip ring is fixedly set. The input end of the conductive slip ring is set on the inner ring. The control module controls the stepper motor to drive the inner ring to rotate according to the rotation angle of the blade so that the input end of the conductive slip ring and the blade maintain a constant relative position.
3. The rail-mounted wind turbine according to claim 1, characterized in that: The device has multiple blades, and the stator coils on the multiple blades are connected to each other and connected to the conductive slip ring via a cable.
4. The rail-mounted wind turbine according to claim 2, characterized in that: The position detection module includes multiple proximity switches evenly distributed on the circular track.