MDWT is a wind turbine.which has a very good efficiency.

1. MULTI DIRECTIONAL WIND TURBINE
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2. Introduction
• Wind power is the conversion of wind energy into electricity or mechanical
energy using wind turbines.
• Wind power generation capacity in India is 49,130 MW (as per 2010 Wind
Atlas).
• This project presents a new multi directional wind turbine can capture wind
energy on building rooftops.
• Our aim is to harvest turbulent urban/ industrial wind at low speed from
any direction.
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3. Literature Review
3
SL NO TITLE AUTHORS NAME YEAR
1 Electricity generation
from Windmill and
performance analysis
Amit Roy,
Md. Rokunuzzaman
JMEST
Vol 2 issue 6
2015 june
2 Innovative Multi
Directional Wind
Turbine
Sevvel p,
Santhosh p
IJIRSET
Vol 3 issue 3
2014 march
3 Wind Turbine Blade
Efficiency and Power
Calculation with
Elecrical Analogy
Asis Sarkar,
Dhiren kumar Behera
ISSN
Vol 2 issue 2
2012 feb

4. Methodology
Data
Collection
Material
Selection
Design of
Components
Analyzing
using Software
Fabrication of
Components
AssemblyTesting
Results and
Conclusion
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5. Working Principle
• The energy in the wind turns the propeller like blades around a rotor.
• The rotor is connected to the main shaft, which spins a generator to create
electricity.
• Wind turbines can be used to produce electricity for a single home or
building.
• They can be connected to an electricity grid for more widespread electricity
distribution.
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6. 6

7. Construction
• Aerodynamic modeling is used to determine
optimum height, number of blades and blade
shape.
• Multi Directional Wind Turbine (MDWT) can be
divided into three components:
 Rotor component
 General component
 Structural support component
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8. Aerodynamics
• Shape and dimensions of the blades are determined by the aerodynamic
performance required to efficiently extract energy from the wind.
• The air flow at the blades is not the same as the airflow far away from the
turbine.
• The aerodynamics of a wind turbine at the rotor surface exhibit phenomena
that are rarely seen in other aerodynamic fields.
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9. Aerodynamics (Cont…)
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Aerofoil vertical support wall with
air bleed channels
Toroid blade with air bleed channels

10. Power Control
• All wind turbines are designed for a maximum wind speed, called the
survival speed.
• Survival speed of commercial wind turbines:144km/h to 259 km/h.
• If the rated wind speed is exceeded, the power has to be limited.
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11. Design Calculations
• Tip Speed Ratio: TSR = Tip speed of blade / Wind speed
Typical TSR for slow running is 1 to 4 and for fast running 5 to 7.
• Number of Blades: In vertical wind mills, best number is 15 or more for
smooth and steady rotation. In MDWT, we use 17 blades for proper design.
• Angle of Attack (Blade Angle): Typical blade angle is 4º with flight
direction. Sometimes 30º or 45º blade angles are used.
• Wind Speed: Based on the criteria with the power, rpm, blade chord of the
windmill, the wind velocity is 7 m/s 11

12. Design Calculations (Cont…)
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13. Design Calculations (Cont…)
• The rotor, blades and casing with toroid blades are constructed according to
the dimensions.
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Designated front view and top view of rotor and casing

14. Computational Study
• Computational Fluid Dynamics (CFD): Analyzing the aerodynamics in the
study of wind turbines.
• Steps required to CFD Analysis:
• Defining the Modeling Goals
• Creating Model Geometry
• Defining and Creating Mesh
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• Setting up the Solver and Physics
• Monitoring the Solution
• Evaluating the Solution through Results
• Revising the Model
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15. Computational Study (Cont…)
 Creating Model Geometry
15Model geometry

16. Computational Study (Cont…)
 Defining and Creating Mesh
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Model geometry after meshing
*

17. Fabrication
• Turbine Size: To minimize costs, wind farm turbines are basically limited by
the strength of materials, and sitting requirements.
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• Nacelle: It is housing the gearbox and generator connecting the tower and
rotor.
• Gear Box: It converts the turning speed
of the blades into 15 to 20 rpm.

18. Fabrication (Cont…)
• Center Shaft: It consists of a single 56cm length and 2.5cm in diameter. A
solid shaft rotating at 75 rpm is assumed to be made of copper.
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Rotor blade and shaft
• Bearing: For the smooth operation of
Shaft, bearing mechanism is used. Bearing
has diameter of 2.5cm.

19. Fabrication (Cont…)
• Generator: For reducing the cost and
weight, gearbox is inserted between
the rotor hub and the generator.
• Blade Design: Use of aluminum and
composite materials lower rotational
inertia. Number of blades are
selected for aerodynamic efficiency.
• Blade material: Smaller blades can
be made from light metals such as
aluminium.
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20. Fabrication (Cont…)
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Mechanical components of wind turbine Electrical components of wind turbine

21. Result
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Graph showing Speed v/s Wind speed Graph showing output power v/s Wind speed

22. Result (Cont…)
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Graph showing Turbine efficiency vs Speed

23. Result (Cont…)
• The figure below shows the result obtained by performing Computational
Fluid Dynamics analysis using Ansys 15.0 Fluent computer software.
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24. Result (Cont…)
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Velocity stream line with pressure

25. Result (Cont…)
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Velocity stream line

26. Cost Analysis
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27. Conclusion
• This project has approach to a new model of multi directional wind turbine
that enables the wind from any direction.
• The theoretical and practical ideas presented in this project have been
applied to real world eliminating the present environmental issues.
• This work differs from existing approaches will become a big success in
future generation.
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28. Reference
• A Review: Aerodynamic Analysis On Vertical Axis WindTurbine Blade. Girish M
Prajapati Abrarkhan Pathan Mr. B J Patel. Volume 1, Issue 12, December -2014.
• Comparison of Horizontal Axis Wind Turbines and Vertical Axis Wind Turbines
Muthu Manokar Vol. 04, Issue 08 (August. 2014).
• Design and analysis of highway windmill electric generation Norzelawati Asmuin
volume-03, Issue-07, pp-28-32 (2014).
• Design and Analysis of Vertical Axis Wind Turbine F.Farooq Vol. 4, Issue, 2, pp.
313-315, February (2014).
• Design, Development and Testing of a Combined Savonius and Darrieus Vertical
Axis Wind Turbine M. Abid, K. S. Karimov, H. A. Wajid, F. Farooq, H. Ahmed, O.
H. Khan (2015).
• www.energy.gov/eere
• www.indianwindpower.com
• www.explainthatstuff.com/windturbine 28

29. Thank You
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