S. A. KHAN ET AL.
Copyright © 2013 SciRes. EPE
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the swept area is
Table 2. Error Estimation of VAWT.
Mechanical Torque [Nm]
Swept Area
[m2] Theoretical Simulation
Error
[%]
1.6 0.68 0.7 2.9
2.4 1.557 1.7 9.18
3.2 2.76 2.84 2.9
4 4.29 4.324 0.8
4.8 6.226 6.3 1.18
5.6 8.474 8.3 2.05
6.4 11.069 11.074 0.05
Table 3. Error Estimation of PMSG.
Load Power
MechanicalTorque(Nm) Simulation Experimental Error (%)
52 148 126 14.90
68.6 284 240 15.49
83.4 416 367 11.81
100.2 586 534 8.81
116.9 817 733 10.23
132.9 1004 956 4.79
149.2 1262 1209 4.19
165.8 1878 1500 20.13
fixed at 5.2 m2 having fixed the radius and height of the
turbine to 1 m and 2.6 m respectively. For the generator
part, the simulation data is gathered for different values
of torque from the turbine; the design is built in CFD and
sent to a manufacturing company. Upon arrival, the gen-
erator is tested and load voltage and power were meas-
ured for different set of values of RPM and Torque. As it
can be seen in Table 3, there were differences while cal-
culating the error (5%- 27%) for load power. It is due to
the friction factor and stator inductance difference. This
VAWT with PMSG can make a significant impact for
low level wind situation in which Malaysia and so many
other countries stand.
6. Acknowledgements
The project is funded by the Ministry of Higher Educa-
tion (MOHE) of Malaysia under the ERGS grant.
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