[75]
. However, it was found that adjacent turbines with the same
rotational direction tend to reduce the performance of the pair. On
the other hand, the performance is generally unaffected by counter-
rotating turbines.
Investigation into a single pair of H-rotors is shown in
Fig. 26
a.
The H-rotors (indicated by two counter-rotating circles) are spaced
at 1.65 rotor diameter. The red/bold line is the normalized CP at all
angle, except for some angle range which have been omitted due to
inconsistent wind
fl
ow below 15 min. The three circles surrounding
the H-rotors are normalized power indicators at 0.5, 1.0 and 1.5,
respectively from the smallest circle. The investigation showed that
at certain angle, the average power generated by both turbines is
less than that of an isolated turbine. However, at other angles the
average power of the pair is higher than that of an isolated. Overall,
the average power generated by the pair at all angles is slightly
better than an isolated turbine as shown in
Fig. 26
b. The
fi
gure
indicates that slower turbine rotation bene
fi
ts the pair in a trade-off
with more critical speed regulation. The vertical dashed-line is the
designed operating TSR of the H-rotors
[76]
.
12. Conclusion
Darrieus VAWT had experienced ups and downs since the in-
vention in 1920s. Several variations on both curved- and straight-
blades con
fi
gurations have been investigated. Current develop-
ment shows that guy-wired rotor is getting less popular due to
many disadvantages, while cantilevered-rotor using tubular or
truss structure is becoming more dominant for both curved- and
straight-blades con
fi
gurations. The reliability of cantilevered-rotor
has ignited new interest in Darrieus VAWT both in small and large
scale. Novel variations have emerged to provide better performance
and lower COE. Darrieus VAWT has produced several variations,
most notably Helical H-rotor. In addition, investigations into clus-
tered Darrieus VAWT have been currently taking place, which show
promising results over an HAWT wind farm.
Acknowledgment
The authors would like to acknowledge the Ministry of Science,
Technology and Innovation (MOSTI)
e
Malaysia, for sponsoring this
project under the PRGS/1/11/TK/UKM/03/2 grant.
References
[1]
Hau E. Wind turbines: fundamental, technologies, application, economics. 2
nd
ed. Berlin: Springer-Verlag Berlin Heidelberg; 2006
.
[2]
Brulle RV. Feasibility investigation of the giromill for generation of electrical
power. Technical discussion, vol. II. Energy Research and Development
Administration; 1977. COO/2617
e
76/1/2
.
[3]
Brulle R. McDonnell 40 kW Giromill wind system
e
phase II: fabrication and
test. McDonnell Aircraft Company; 1980. RFP-3304
.
[4]
Templin RJ. Design characteristics of the 224 kW Magdalen Islands VAWT. SEE
N80
e
16453 07-44. NASA Lewis Research Center; 1979
.
[5]
Johnson GL. Wind energy systems. Prentice-Hall; 1985
.
[6]
Price TJ. UK large-scale wind power programme from 1970 to 1990: the
carmarthen Bay experiments and the Musgrove vertical-axis turbines. Wind
Eng 2006;30:225
e
42
.
[7] Darrieus GJM. Turbine having its rotating shaft traverse to the
fl
ow of the
current, US Patent No. 1,835,018; 1931.
[8]
Sutherland HJ, Berg DE, Ashwill TD. A retrospective of VAWT technology.
SAND2012
e
0304. Sandia National Laboratories; 2012
.
[9]
Manwell J, McGowan J, Rogers A. Wind energy explained: theory, design and
application. 2nd ed. Great Britain, U.K: John Wiley
&
Sons Ltd.; 2009
.
[10] Vertical Axis Wind Turbine, Johnson System, Inc., 2013. Available from:
http://
www.johnsonsysteminc.com/green-energy/verticle-axis-wind-turbine/
[accessed 01.03.13].
[11] ISHPEMING, MICHIGAN PROTOTYPE, McKenzie Bay International, Ltd., Avail-
able
from:
http://www.mckenziebay.com/#!Ishpeming%20Turbine/c1oat
[accessed 01.03.13].
[12] Mackenzie J. Clines corners wind energy demonstration project. VAWTPower
Management, Inc.; 2005. Available from:
http://www.vawtpower.blogspot.
com/2005_05_01_archive.html
[accessed 24.02.13].
[13] Nigam DK, El-Sayed MEM. Vertical axis wind system, US Patent No. 7,948,111;
2011.
[14] Mackenzie J. Operational testing nears completion. VAWTPower Manage-
ment, Inc.; 2007. Available from:
http://www.vawtpower.blogspot.com/
2007_07_01_archive.html
[accessed 03.12.13].
[15]
Holdsworth B. Options for micro-wind generation: part two. Renew Energy
Focus 2009;10:42
e
5
.
[16] 6 kW vertical axis wind-power turbine (VAWT), Shanghai Muce wind power
equipment Co., Ltd., Available from:
http://www.vawtmuce.com/picture.asp?
ClassName
¼
Wind-Power%20Type
[accessed 30.06.14].
[17] UGE-9M,
Urban
Green
Energy,
Inc.,
Available
from:
http://www.
urbangreenenergy.com/products/UGE-9M
[accessed 30.06.14].
[18]
Deglaire P, Engblom S, Agren O, Bernhoff H. Analytical solutions for a single
blade in vertical axis turbine motion in two-dimensions. Eur J Mech B Fluids
2009;28:506
e
20
.
[19]
Blackwell BF, Sheldahl RE, Feltz LV. Geometrical aspects of the troposkien as
applied to the darrieus vertical-axis wind turbine. In: ASME des. eng. tech.
conf., Washington, D.C.; 1975
.
[20]
Berg DE. Customized airfoils and their impact on VAWT cost of energy. In:
Windpower '90, Washington, D.C; September 1990. p. 24
e
8
.
[21]
Klimas PC. Tailored airfoils for vertical axis wind turbines. SAND84
e
1062.
Sandia National Laboratories; 1984
.
[22]
Mohamed MH. Performance investigation of H-rotor Darrieus turbine with
new airfoil shapes. Energy 2012;47:522
e
30
.
[23]
Paraschivoiu I. Wind turbine design
e
with emphasis on darrieus concept.
Quebec: Presses Internationales Polytechnique; 2002
.
[24]
Steward H. Eggs that stay
fi
rm, fences that bounce and a new look in wind-
mills. The Gazette Saturday Edition 07 October 1972. Montreal
.
[25]
Biswas S, Sreedhard BN, Singh YP. Dynamic analysis of a vertical axis wind
turbine using a new windload estimation technique. Comput Struct 1997;65:
903
e
16
.
[26]
Wilson RE, Lissaman PBS. Applied aerodynamics of wind power machines.
Oregon State University; 1974
.
Fig. 26.
Performance of two-closely spaced H-rotors. Normalized
C
P
is showed in respect to: (a) incoming angle of the wind and (b) TSR
[76]
.
W. Tjiu et al. / Renewable Energy 75 (2015) 50
e
67
66
[27]
Strickland JH. The darrieus turbine: a performance prediction model using
multiple streamtubes. SAND75
e
0431. Sandia Laboratories; 1975
.
[28]
Templin RJ. Aerodynamic performance theory for the NRC vertical-axis wind
turbine. LTR-LA-160. National Research Council; 1974
.
[29]
Loth JL, McCoy H. Optimization of darrieus turbines with an upwind and
downwind momentum model. J Energy 1983;7:313
e
8
.
[30]
Wilson RE, Walker SN. Fixed wake analysis of a Darrieus rotor. SAND81
e
7026.
Sandia Laboratories; 1981
.
[31]
Shankar PN. Development of vertical axis wind turbines. Proc Indian Acad Sci
1979;C2:49
e
66
.
[32]
Rajagopalan RG, Fanucci JB. Finite difference model for vertical axis wind
turbines. J Propuls 1985;1:432
e
6
.
[33]
Paraschivoiu I. Double-multiple streamtube model for studying vertical-axis
wind turbines. J Propuls 1988;4:370
e
7
.
[34]
Holme O. A contribution to the aerodynamic theory of the vertical-axis wind
turbine. In: Int. Symp. Wind energy syst; 1976. C4
.
[35]
Strickland JH, Webster BT, Nguyen T. A vortex model of the darrieus turbine:
an analytical and experimental study. J Fluids Eng 1979;101:500
e
5
.
[36]
Swamy NVC, Fritzsche AA. Aerodynamic studies on vertical-axis wind turbine.
In: Int. symp. wind energy syst., Cambridge, England; 1976. p. 73
e
80
.
[37]
Worstell MH. Aerodynamic performance of the DOE/Sandia 17-m-diameter
vertical-axis wind turbine. J Energy 1981;5:39
e
42
.
[38]
Castelli MR, Englaro A, Benini E. The Darrieus wind turbine: proposal for a
new performance prediction model based on CFD. Energy 2011;36:4919
e
34
.
[39]
Ashwill TD. Measured data for the Sandia 34-meter vertical axis wind turbine.
SAND91
e
2228. Sandia National Laboratories; 1992
.
[40]
Spera DA. Wind turbine technology: fundamental concepts of wind turbine
engineering. 2nd ed. New York: ASME Press; 2009
.
[41]
Cooper P. Development and analysis of vertical-axis wind turbines. In:
Tong W, editor. Wind power generation and wind turbine design. South-
ampton: WIT Press; 2010
.
[42]
Reuter RC, Worstell MH. Torque ripple in a vertical axis wind turbine.
SAND78
e
0577. Sandia National Laboratories; 1978
.
[43]
Polinder H, Pijl FFAvd, Vilder GJd, Tavner P. Comparison of direct-drive and
geared generator concepts for wind turbines. IEEE Trans Energy Convers
2006;21:725
e
33
.
[44] WIND-e20: Overview. 2013. Available from:
http://winde20turbine.com/
component/allvideoshare/video/latest/wind-e20-overview.html
[accessed
03.12.13].
[45]
Blackwell BF, Reis GE. Blade shape for a troposkien type of vertical-axis wind
turbine. SLA-74
e
154. Sandia National Laboratories; 1974
.
[46]
Owens BC, Hurtado JE, Paquette JA, Grif
fi
th DT, Barone M. Aeroelastic
modeling of large offshore Vertical-axis wind turbines: development of the
offshore wind Energy simulation toolkit. SAND2013-2203. Texas A
&
M Uni-
versity in collaboration with Sandia National Laboratories; 2013
.
[47]
Ashwill TD. Initial structural response measurements and model validation for
the Sandia 34-meter VAWT test bed. SAND88
e
0633. Sandia National Labo-
ratories; 1990
.
[48]
Popelka D. Aeroelastic stability analysis of a darrieus wind turbine.
SAND82
e
0672. Sandia National Laboratories; 1982
.
[49]
Musgrove PJ. The variable geometry vertical axis windmill. In: Int. symp. wind
energy syst., Cambridge, England; 1976. p. 87
e
100
.
[50]
Vaahedi E, Barnes R. Dynamic behaviour of a 25m variable-geometry vertical-
axis wind-turbine generator, generation, transmission and distribution. IEE
Proc C 1982;129:249
e
59
.
[51]
Anderson MB, Groechel KM, Powles SJ. Analysis of data from the 25 m variable
geometry vertical axis wind turbine. In: Proc. ninth British wind energy assoc.
wind energy conf., Edinburgh; 1987. p. 333
e
9
.
[52]
McConnell RD. Giromill overview. In: The wind energy innovative syst. conf.,
Colorado Springs, 23
e
25 May; 1979
.
[53]
Moran WA. Giromill wind tunnel test and analysis. COO/2617
e
4/2. Technical
discussion, vol. 2. McDonnell Aircraft Company; 1977
.
[54]
Anderson JW, Brulle RV, Birch
fi
eld EB, Duwe WD. McDonnell 40 kW Giromill
wind system
e
phase I: design and analysis. RFP-3032/1. McDonnell Aircraft
Company; 1979
.
[55]
Meir R, Page LD, Bedford LA. The UK department of energy wind energy
programme. In: Proc. tenth British wind energy assoc. wind energy conf.,
London; 1988. p. 5
e
8
.
[56]
Prestage M. Dream of power has gone with the wind. London: The Inde-
pendent; 1991. p. 3
.
[57]
Eriksson S, Solum A, Leijon M, Bernhoff H. Simulations and experiments on a
12 kW direct driven PM synchronous generator for wind power. Renew En-
ergy 2008;33:674
e
81
.
[58]
Sjokvist S, Eriksson S. Study of demagnetization risk for a 12 kW direct driven
permanent magnet synchronous generator for wind power. Energy Sci Eng
2013;1:128
e
34
.
[59]
Eriksson S, Semberg T, Bernhoff H, Leijon M. A 225 kW Direct driven PM
generator for a vertical axis wind turbine. In: European wind energy conf.
&
exhib. 2010, Warsaw, Poland, 20
e
23 april; 2010
.
[60] Ottermo F, Bernhoff H. An upper size of vertical axis wind turbines. Wind
Energy 2013.
http://dx.doi.org/10.1002/we.1655
.
[61] Ny vindkraftteknik f
€
or framtiden, E.ON Sweden AB, 2012. Available from:
http://www.eon.se/om-eon/Om-foretaget-old/old-aktuellt/Nyheter-Privat
kund/Unikt-samarbete-skapar-framtidsutsikter-for-ny-vindkraftteknik/
[accessed 09.12.13].
[62] Gorlov AM. Unidirectional helical reaction turbine operable under reversible
fl
uid
fl
ow for power systems, US Patent No. 5,451,137; 1995.
[63] Gorlov AM. Unidirectional reaction turbine operable under reversible
fl
uid
from
fl
ow, US Patent No. 5,451,138; 1995.
[64] QuietRevolution
e
QR5, Quiet Revolution Ltd., Available from:
http://www.
quietrevolution.com/qr5/qr5-turbine.htm
[accessed 16 January 2013].
[65]
Bussel GJWv, Mertens S, Polinder H, Sidler HFA. The development of Turby, a
small VAWT for the built environment. In: Global wind energy conf. 2004,
Chicago, USA, 30 march; 2004
.
[66]
Bussel GJWv, Mertens S, Polinder H, Sidler HFA. TURBY: concept and real-
isation of a small VAWT for the built environment. In: EAWE/EWEA Special
topic Conf.
“
The science of making torque from wind
”
, Delft, The Netherlands;
2004. p. 509
e
16
.
[67]
Scheurich F, Fletcher TM, Brown RE. The in
fl
uence of blade curvature and
helical blade twist on the performance of a vertical-axis wind turbine. In: 29th
ASME wind energy symp., Orlando, Florida, 4
e
7 January; 2010
.
[68]
Scheurich F, Brown RE. Modelling the aerodynamics of vertical-axis wind
turbines in unsteady wind conditions. Wind Energy 2013;16:91
e
107
.
[69] Boatner B. Vertical Axis wind turbine with articulating rotor, US Patent No.
7,667,862; 2010.
[70]
Tescione G, Ragni D, He C, Ferreira CJS, Bussel GJWv. Near wake
fl
ow analysis
of a vertical axis wind turbine by stereoscopic particle image velocimetry.
Renew Energy 2014;70:47
e
61
.
[71]
Thomsen K, Sorensen P. Fatigue loads for wind turbines operating in wakes.
J Wind Eng Ind Aerodyn 1999;80:121
e
36
.
[72]
Grady SA, Hussaini MY, Abdullah MM. Placement of wind turbines using ge-
netic algorithms. Renew Energy 2005;30:259
e
70
.
[73]
Gonzalez JS, Rodriguez AGG, Mora JC, Santos JR, Payan MB. Optimization of
wind farm turbines layout using an evolutive algorithm. Renew Energy
2010;35:1671
e
81
.
[74]
Ammara I, Leclerc C, Masson C. A viscous three-dimensional differential/
actuator-disk method for the aerodynamic analysis of wind farms. J Sol En-
ergy Eng 2002;124:345
e
56
.
[75]
Whittlesey RW, Liska S, Dabiri JO. Fish schooling as a basis for vertical axis
wind turbine farm design. Bioinspir Biometics 2010;5:1
e
6
.
[76]
Dabiri JO. Potential order-of-magnitude enhancement of wind farm power
density via counter-rotating vertical-axis wind turbine arrays. J Renew Sust
Energy 2011;3:1
e
12
.
[77] Golecha K, Eldho TI, Prabhu SV. Study on the interaction between two hy-
drokinetic savonius turbines. Int J Rotating Mach 2011.
http://dx.doi.org/
10.1155/2012/581658
.
[78]
Shigetomi A, Murai Y, Tasaka Y, Takeda Y. Interactive
fl
ow
fi
eld around two
Savonius turbines. Renew Energy 2011;36:536
e
45
.
[79]
Worstell MH. Measured aerodynamic and system performance of the 17-m
research machine. In: Proc. vertical axis wind turbine (VAWT) des. tech.
semin. ind., Albuquerque, New Mexico; 1980. p. 233
e
58
.
[80] Mackenzie J. Turbine before the squall. VAWTPower Management, Inc.; 2010.
Available from:
http://www.vawtpower.blogspot.com/2010_07_01_archive.
html
[accessed 24.02.13].
[81]
Rourke FO, Boyle F, Reynolds A. Tidal energy update 2009. Appl Energy
2010;87:398
e
409
.
[82] Boatner B. A summary overview of the blackhawk wind turbine. 2010.
Available from:
http://coen.boisestate.edu/windenergy/
fi
les/2011/10/Black
hawkOverview-BruceBoatner1.pdf
[accessed 23.02.13].
W. Tjiu et al. / Renewable Energy 75 (2015) 50
e
67
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