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The primary purpose of altering the angular speed is to enable the extraction of
optimum power levels, a technique commonly known as maximum power point
tracking (MPPT). In scenarios where the blade pitch is at a zero angle, the optimum
TRS is obtained by maximizing the power coefficients:
ω
λ
opt
opt
wn
= R
V
(11.9)
This results in
V
R
wn
opt
opt
=
ω
λ
(11.10)
with
ω opt as the optimum speed of the rotor angle measured in rad/s
λ opt representing the ratio of optimum tip speed
R denoting the turbine radius (m)
V indicating the speed of wind (m/s)
Figure 11.3 indicates the changes in the rates of wind speed and power when the
car is active [3, 4]. From the analysis of the figure, it is clear that quality results in
the car’s performance can only be achieved in steady winds. On the other hand, a
rapid increment in the speed of wind results in the rise in energy levels.
Fig. 11.3 Correlation between turbine speed and generated power
11 Flying Transportation Technology
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