53
Power is also defined as
P
T
= ω
(3.48)
Rearranging (3.48) we get
T
P
= ω
(3.49)
Using Eqs. (3.49) and (3.47) we can obtain
T
R
C
K
opt
p
opt
opt
=
=
1
2
5
3
2
2
ρπ
λ
ω
ω
max
(3.50)
Thus, this analytical value is obtained by the above equation considering the
torque of turbine which is measured directly from the calculation of wind speed to
confirm maximum power point tracking (MPPT).
Simply, the MPPT is being done by reading the current power output in order to
determine the control mechanism of the wind turbine to clarify the maximum power
obtained from wind turbine (Fig. 3.4). Thus, a functional approach is being used
where the power coefficient is expressed as the function of TSR considering the
wind turbine rotor coefficients c 1 –c 6 . The coefficients (c 1 –c 6 ) and parameter (λ i ) here
are used for the measurement of the power coefficient as c 1   =  0.53, c 2   =  151,
c 3  = 0.58, c 4  = 0.002, and c 5  = 13.2, c 6  = 18.4 and x is 2.14. Thus, the parameter (λ i )
is defined as
Fig. 3.4 The diagram of wind turbine synchronous mechanism which shows the dynamic mode of
wind energy production in the nonlinear open-circuit voltage
Results and Discussion