Preliminary Investigation on Generation of Electricity Using Micro Wind Turbines Placed on A Car
Wind energy is one of the prominent resources for renewable energy and it is traditionally extracted using stationary wind turbines. However, it can also be extracted using mini or micro wind turbines on a moving body, such as an automobile, while cruising at high speeds on freeways. If the electricity is produced using air flowing around the vehicle without affecting aerodynamic performance of the vehicle, it can be used to charge up the battery or power up additional accessories of the vehicle. For the first time, in the present work, a preliminary investigation was carried out to generate electricity by utilizing air flow on a moving car. Initially, a correlation between the car speed and wind velocity was established using an anemometer. Placing a set of two micro wind turbines along with two micro generators on the rear end of the car trunk, the present study investigated the feasibility of generating electricity from these micro wind turbines while evaluating the effect of drag force on the performance of the car through the experimental approach and computational fluid dynamics (CFD) simulations. Both approaches confirmed negligible effect of drag force on the vehicle performance in terms of gas mileage and changes in drag coefficient values. Following these studies, the micro wind turbines were also tested for electricity generation at various cruising speeds of the car ranging from 50 to 80 mph on the freeways. The voltage and power generated always showed an increasing trend with increasing the car speed, however they saturated when a cut off limit was setup with the voltage controllers. A maximum voltage of 3.5 V and a maximum current of 0.8 A were generated by each micro wind turbine when a cut off limit was used along with a load consisting of four LED bulbs in parallel with 3.5 V and 0.2 A rating each. On the other hand, when the tests were repeated without using the cut-off limit, a maximum voltage of 18.91 V and a maximum current of 0.65 A were recorded with a load of six flash bulbs in series (flash bulb rating – 4.8 V and 0.5 A each). These studies clearly demonstrate the flexibility to vary the voltage and current outputs from the micro wind turbines indicating a possibility for utilizing the wind energy on the cars at high speeds.
Keywords: automobile, renewable energy; wind energy
Article History: Received Sept 5th 2016; Received in revised form Dec 6th 2016 ; Accepted January 4th 2017; Available online
How to Cite This Article: Bangi, V.K.T., Chaudhary, Y., Guduru, R.K., Aung, K.T and Reddy, G.N. (2017) Preliminary investigation on generation of electricity using micro wind turbines placed on a car. Int. Journal of Renewable Energy Development, 6(1), 75-81.
Amick, J.L (1978) US patent Wind-powered car
Autodesk Flow Design Help http://help.autodesk.com/view/ADSKFD/ENU/?guid=GUID-774D23EE-4278-4E02-B176-55ADDC81C508 Accessed on 15th August 2016
Boodman, L., and Malone, J.P (1980) US patent, Wind turbine generator for electrical powered vehicles
Cakir, M (2012) CFD Study on Aerodynamic Effects of a Rear Wing/spoiler on a Passenger Vehicle, Santa Clara University, School of Engineering, 3-9.
CAR Blueprints http://carblueprints.narod.ru/honda.html Accessed on 10th August 2016
CoolTerm Software, http://freeware.the-meiers.org/ Accessed on 15th August 2016
DeCicco, J. and Fung, F. (2006), Global Warming in the Road, The Climate Impact of America’s Automobiles, Environmental Defense 1-4
Gadesmann, K. and Kuhnert, F. (2007), The automotive industry and climate change, Framework and dynamics of the CO2 (r)evolution, 27-3
Global Trends in Renewable Energy Investment 2016,http://www.fs-unep-centre.org (Frankfurt am Main) Accessed on 3rd August 2016
Hall effect sensing and application http://sensing.honeywell.com/hallbook.pdf Accessed on 14th August 2016
Kassakian, J.G., Wolf, H.C., Miller, J.M., Hurton, C.J. (1996) Automotive electrical systems circa 2005, IEEE Spectrum,3(8 ), 22-27
Kiernan, M.J. (2008), Investing in a Sustainable World, AMACOM Div American Mgmt Assn, 1-7
Ramsden, E (2006). Hall Effect Sensors - Theory and Applications, 2nd ed.; Elsevier: Amsterdam, The Netherlands.
Renewable energy policy network for the 21st century- The First Decade 2004-2014, http://www.ren21.net/Portals/0/documents/activities/Topical%20Reports/REN21_10yr.pdf Accessed on 10th August 2016
Selvaraju, P.N., Parammasivam, K.M., Shankar,S., Devaradjane, D. (2015) Analysis of Drag and Lift performance in sedan car model using CFD, JCHPS Special Issue, 7, 429-434
Sioshansi, R and Denholm, P (2009) Emissions Impacts and Benefits of Plug-in Hybrid Electric Vehicles and Vehicle to Grid Services, Environmental Science and Technology, 43(4),1199-1204
The Mathematical Collage, Math and the Automobile http://www2.ohlone.edu/people2/bbradshaw/math155/excursions/m155_excursions_automobile.pdf Accessed on 12th August 2016
Transportation http://www.ems.psu.edu/~radovic/Chapter20.pdf Accessed on 12th August 2016
U.S. Transportation Sector Greenhouse Gas Emissions (2013), Office of Transportation and Air Quality, EPA-420-F-13-033a, 1-4
Vu, T.H (2005) US patent Wind energy capturing device for moving vehicles
World Economics, Vol. 7, No. 2, April–June 2006 Pages 1-10
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