Diese Präsentation wurde erfolgreich gemeldet.

Design of maglev wind turbine

Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Anzeige
Nächste SlideShare
Maglev windmill
×

1 von 35 Anzeige

Design of maglev wind turbine

Maglev Wind Turbine

Maglev Wind Turbine

Anzeige
Anzeige

Weitere Verwandte Inhalte

Anzeige

Design of maglev wind turbine

1. 1. Technical seminar on Experimental Study on Miniature Fabricated Model of Maglev Wind Turbine By Preetham Ds IV M.Tech ESM Dept of EEE,SJCE Guidance Dr.M.S.Shashikala Professor Dept.of E&E Engg. SJCE Mysore 6/18/2018 1
2. 2. Contents  Introduction  Problem Formulation  Objective of The Project  Methodology  Literature Survey  Design of Maglev Wind Turbine  Design of Levitation System for the Proposed Model  Design of Turbine Section  Design of Generator For The Proposed Model  Results And Discussions  Conclusions  Future Scope 6/18/2018 2
3. 3. Introduction  Maglev Wind Power Generation (MWPG) is the advanced method of harnessing the kinetic energy of wind.  In this type of generation the spinning turbine floats on the magnetic cushion, just as the high-speed train floats above the rail track.  This new model of wind turbine uses magnetic levitation to reduce the internal friction of the rotor which is considered as a revolution in the field of wind technology, producing 20% more energy than a conventional turbine, at the same time decreasing operational costs by 50% over the traditional wind turbine. 6/18/2018 3
4. 4. Magnetic levitation  Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic field.  A permanent magnet feels a force from another permanent magnet. This action at a distance is described by saying a magnetic field exists created by one of the bodies at the location of the other body. The magnetic field is the medium by which the force is transferred 6/18/2018 4
5. 5. Maglev Turbine Concept 6/18/2018 5
6. 6. Problem Formulation  Conventional Horizontal Axis Wind Turbine (HAWT) being usage of gears , bearings and Synchronous generators which are inefficient and the construction and material cost are 70% total cost of wind turbines which is significantly high.  Friction between rotor blades and base causes frictional losses thus reduces power output  Vibration loss accounted for 37.5%.  Power losses are more and Efficiency is less.  It Requires lubrication, vast spaces and More maintenance 6/18/2018 6
7. 7. Objective of the Project  Design and Fabrication of Miniature Fabricated model of wind turbine.  A thorough Experimental Investigation is carried out and validating the design calculations.  Results of Fabricated model will be compared with the conventional model available in the literature 6/18/2018 7
8. 8. Methodology Following are the methods carried out while designing and fabricating Magnetically Levitated Wind Turbine  Procurement of materials such as Neodymium permanent magnets ,PVC pipes, MS collar , Base support etc.  Fabricating the rotor blades, plywood circular disc with using soldering, Drilling, Riveting, and Cutting techniques mentioned in the Appendix.  Assemble of miniature model with Levitation System  Placement of windings and magnet arrangement  Testing of Final model using the Blower  To check the speed of the , Maglev Wind Turbine using Digital Anemometer and Tachometer.  To check the Voltage , Current , Resistance of the coils using the Multimeter  Results obtained from the Maglev Turbine are compared with standard Conventional Wind Turbine available in the literature survey. 6/18/2018 8
9. 9. Literature survey  “Regenedyne Maglev wind power generation” by Vishal D Dharappagol, the paper describes design and implementation of magnetically levitated vertical axis wind turbine system that has the ability to operate in both low and high (1.5m/s to 40m/s) wind speed conditions.  “Vertical Axis Wind Turbine with Maglev Technology” by Amit D. Patil1. A vertical axis wind turbine is introduced by magnetic levitation technology to optimize the performance. The system utilize nature of permanent magnet as a replacement for ball bearings to levitate the turbine component and thus minimize energy losses while rotating, which is the major problem that faced by conventional wind turbine 6/18/2018 9
10. 10. Overview of Maglev Wind Turbine Generally wind turbine consists of three sections. In this project for implementation of levitation technology to Vertical Axis Wind Turbine. It is divided into three sections namely 1. Wind Turbine Section 2. Magnetic Levitation section 3. Axial Flux Generator 6/18/2018 10
11. 11. Wind Turbine Section  Major components of wind turbine  Types of wind turbine  Types of vertical axis wind turbine  Wind Turbine Design Parameters 6/18/2018 11
12. 12. Magnetic Levitation Section  Selection of Magnets for Proposed Model  B-H Curve  Magnetic Force Required to Levitate 6/18/2018 12
13. 13. Axial Flux Generator • Coil Design • Coil Polarity • Flux • Voltage Induced in a coil 6/18/2018 13
14. 14. Design of Levitation System for the Proposed Model Selection of Magnet for the Proposed Levitation System 6/18/2018 14
15. 15.  Nd-Fe-B Neodymium permanent magnet at room temperature exhibits highest properties of all of the magnetic materials, Has a very attractive magnetic characteristic which offers high flux density operation and the ability to resist demagnetization. 6/18/2018 15
16. 16. Magnetic Force Calculations 6/18/2018 16
17. 17. Reluctance Flux Magnetic Flux Density Magnetic Force Required to Levitate 6/18/2018 17
18. 18. Magnetic Levitation System Design Parameters Details 6/18/2018 18
19. 19. Design of Turbine Section and Axial Flux Generator for the Proposed Model Design of Turbine Section • Compared to standard design model of the Darrieus, we took a bit of a different approach in our design by modifying it with a curvature design of bladesBlades are fabricated keeping the volume of air strikes the blades in a given area. Length of • blade is 9cms. Blade angle of 450 maintained between two blades for optimal wind capture. 6/18/2018 19
20. 20. Fabricated Model of Turbine Blades 6/18/2018 20 Blades are fabricated keeping the volume of air strikes the blades in a given area. Length of blade is 9cms. Blade angle of 45deg maintained between two blades for optimal wind capture.
21. 21. The Power of Wind The extractable power from the wind is given by: By considering turbine length of 1 ft 2.96 inch blades or 38cms , the power extracted by wind turbine is given by Designed Rotor/turbine blades in the proposed model will harness wind coming any from direction 6/18/2018 21
22. 22. Design of Axial Flux Generator • The axial flux generator designed in this project utilizes the changing magnetic field produced by the magnets to induce a voltage. • Axial flux generator consists of rotor containing permanent magnets and stator containing coils. 6/18/2018 22
23. 23. Rotor Section Rotor also a part of turbine section contains eight neodymium permanent magnets of dimension 25mmx5mm and These magnets are responsible for the useful flux that is going to be utilized by the power generation system. One circular ring shaped neodymium permanent magnet of dimension 40mmx22mmx7mm used for levitation purpose also act as a magnet bearing at the bottom of the circular disc . 6/18/2018 23 Rotor Containing Neodymium Permanent Magnets
24. 24. Coil Design  The more windings will increase the voltage produced by each coil but in turn it will also increase the size of each coil. In order to reduce the size of each coil a wire with a greater size gage can be utilized.  Four windings are used in this project each having 800 turns 30 SWG which are placed as a sandwich between two permanent magnet. Air gap of 3 cms is maintained to have proper flux leakage through the coil 6/18/2018 24
25. 25. Coil Arrangement  In our design we have chosen to sandwich the coils between two attracting magnets.  In this project coils are connected in series keeping amount of voltage required. The number of turns adds to produce a greater voltage. This design choice will increase the voltage each coil will produce. 6/18/2018 25
26. 26. Design Parameters Calculations Step by step procedure to calculate voltage induced in a coil 1. Finding Field Density (B) 2. Finding flux , MMF 3. Flux density B=φ/A 4. Reluctance 5. Voltage induced in a coil 6/18/2018 26
27. 27. Axial flux generator Generator design parameters details 6/18/2018 27
28. 28. Final Fabricated Model Concept of magnetic levitation is successfully illustrated in this project and the design of axial flux generator and levitation system is fully incorporated in the fabricated model. 6/18/2018 28
29. 29. From the experimentation, the wind turbine model with magnetic levitation starts to rotate at lower wind speed of 1.6m/s than that of conventional wind turbine, which is 3.5m/s available in the literature respectively. Speed vs. Voltage curve is listed in the below figure. 6/18/2018 29
30. 30.  This project demonstrates the utilization of the renewable resource (wind energy) in an efficient way. This type of generation can be used in remote places where conventional power supply is uneconomic  The wind turbine rotors and stator levitated properly using permanent magnets which allowed for a smooth rotation with negligible friction. At moderate wind speeds the power output of the generator satisfied the specifications needed to supply the LED load. An output ranging from 5V to 60V was obtained from the magnetic levitated vertical axis wind turbine prototype  A single large Maglev turbine can output more than conventional horizontal wind turbines. The rotor that is designed harness enough air to rotate the stator at low and high wind speeds while keeping the center of mass closer to the base yielding stability due to the effect of magnetic levitation. 6/18/2018 30
31. 31. 4. The efficiency of turbine is increased by replacing the bearings by magnets; the magnetic levitation helps the turbine to spin at much faster rate as it will eliminate the stress on the shaft of the turbine. The major components are placed at ground level. We can say the Maglev turbine can power more output with high efficiency conversion compared to traditional wind turbine. 5. The system will provide electricity at a rate lower than coal and nuclear. Thus we believe this technology has the capacity to completely is place current technology in use for wind farm 6/18/2018 31
32. 32. Features of Maglev wind turbine • A massive tower structure is not required, as VAWTs’ are mounted closer to the ground. • These are located closer to the ground and hence easier to maintain. • These have lower start up speeds than their horizontal counterparts. These can start at speeds as low as 10Kmph. • These have a lower noise signature • They don’t require yaw mechanisms. • Requires no lubrication • Capable of generating power from wind speeds as low as 1.5 m/s and reported to operate in winds reaching 40 m/s. • Producing 20% more energy than a conventional turbine, at the same time decreasing operational costs by 50% over the traditional wind turbine. 6/18/2018 32
33. 33. Conclusion  Magnetically levitated vertical axis wind turbine was experimentally tested after undergone series of experimentation during fabrication. After testing the project as an overall system we found that it functioned properly and the concept of magnetic levitation is illustrated.  The magnetically levitated vertical axis wind turbine performs better than the conventional wind turbine because, the maglev VAWT model has lower starting wind speed compare to conventional one. Therefore, the Maglev wind turbine is suitable for the application of urban areas to provide green energy and this technology is still in research stage . 6/18/2018 33
34. 34. Limitations • The generator itself had some design flaws which we feel limited the amount of power it could output. • These flaws start at the coils which were initially made too thick and limited how close the magnets attached to the stator could be positioned from each other. • Another setback was that the wire that was used to wrap the coils was 30 SWG and because of its small cross section it restricted the amount of current that could be drawn from the generator • Due to the overall structure and complexity of the of the vertical axis wind turbine, to scale it up to a size where it could provide the amount of power to satisfy an commercial/industrial park or feed into the grid would not be practical. 6/18/2018 34
35. 35. Thank you 6/18/2018 35