1. Design and Development of a Vertical Axis
Micro Wind Turbine
Prepared by : Murat Islam
Supervisor : Dr S O Oyadiji

2. Outline
1. Introduction of the main problem
2. Aim of current research
3. Wind energy as a source
4. Types of wind turbines
5. Main components of VAWT
6. Conclusions
7. Q&A
2

3. Introduction of the main problem
 Need of alternative source of energy
 Increasing demand in electricity consumption
 High NOx and COy emissions
 Unstable air flow directions
 Low speed winds in urban areas
3

4. Aim of current research
4
 The aim of this research is to investigate the design
and development of micro wind turbines for
integration into;
 residential,
 commercial and
 industrial complexes.

5. Wind energy as a source
 Renewable
 Low human footprint
 Usable in urban areas
 Betz limit on efficiency
5

6. Distribution of yields for installation of a swift
1.5 kW turbine
6

7. Impact of low wind speed events amongst area of UK
7

8. Illustration of the main features of flow around a
cubic building
8

9. Preferred locations for different turbine mounting
heights on a building
9

10. Types of wind turbines
Tip speed ratio;
 Low-speed
 High-speed
Axis of rotation;
 Vertical axis
 Horizontal axis
10

11. Common rotor concepts with a vertical axis of rotation
11

12. Vertical axis wind turbine with articulating rotor patent drawing
12

13. Project Nova V shaped vertical axis
wind turbine and a ship next to it
13

14. Main components of VAWT
 Blades or rotor
 Generator
 Bearings
 Gears
 Shaft
14

15. Rotors for the experimental use;
Forward curved centrifugal TABLOCK Blower Wheel
15

16. Rotors for the experimental use;
16

17. Generators for the experimental use;
17
 Bicycle dynamos

18. Generators for the experimental use;
Motorcycle alternators
18

19. Generators for the experimental use;
Axial flux permanent magnet (AFPM) generators
19

20. Connection diagram of a three-phase, nine-coil winding
of an AFPM brushless machine
20

21. Bearings for the experimental use;
Mounted radial bearings
21

22. Gears for the experimental use;
Planetary gears
22

23. Conclusions
 An ARRAY of counter rotating horizontal axis
micro wind turbines can be built and a prototype
can be tested.
 Fan blades need to be optimized regarding to tip
speed ratios
 AFPM machines should be used
 Planetary gears needs to be placed for counter
rotation and increased angular speed of AFPM
 Mounted bearings are suitable for simple fixing
 Shafts needs to be robust designed
23

24. References
1. Small-scale wind energy, in Policy insights and practical guidance (CTC738), F.a.R.A. Department
for Environment, Editor. 2008, Carbon Trust and Met Office.
2. Martin Best, A.B., Pete Clark, Dan Hollis, Doug Middleton, Gabriel Rooney, Dave Thomson and
Clive Wilson, Small-scale Wind Energy – Technical Report, in Urban Wind Energy Research Project
Part 1 – A Review of Existing Knowledge. 2008.
3. Hau, E., Wind Turbines. 2nd ed. Fundamentals, Technologies, Application, Economics. 2006,
Berlin: Springer.
4. Bruce E. Boatner, E.R.D., Eagle, ID (US) 83616, Vertical Axis Wind Turbine With Articulating Rotor.
2010: United States. p. 32.
5. Eti NOVA Project Statement. 2009 [cited 2010 20 April]; Available from: http://www.nova-
project.co.uk/.
6. Forward curved centrifugal TABLOCK Blower Wheels. [cited 2010 20 April]; Available from:
http://www.ht-blowers.com/Tablock%20Blower%20Wheels.pdf.
7. HB-NX70-QR. [cited 2010 20 April]; Available from:
http://techdocs.shimano.com/techdocs/blevel.jsp.
8. SPARX Three Phase POWER Box. [cited 2010 20 April]; Available from:
http://www.britishmotorcyclespares.com/Test_Results.htm.
9. Jacek F. Gieras, R.-J.W., Maarten J. Kamper, Axial Flux Permanent Magnet Brushless Machines.
2004: Kluwer Academic Publishers.
10. Corey, C.A., Epicyclic Gear Train Solution Techniques with Application to Tandem Bicycling, in
Mechanical Engineering. 2003, Virginia Polytechnic Institute and State University: Blacksburg, VA.
11. Childs, P.R.N., Mechanical Design. 2nd ed. 2004, Oxford: Elsevier Ltd.
24

25. Questions &
Answers
25