Page 93 - Renewable Energy Devices and System with Simulations in MATLAB and ANSYS

80 Renewable Energy Devices and Systems with Simulations in MATLAB and ANSYS ®
®

ω΄
+
FLL

ω i Z –1

+

Ts

–γ

x

V β
b2q Digital implementation scheme for the OSG and the FLL where a1 and a2 are the denominator parameters; b0d, b1d, and b2d are the numerators of the
+ SOGI

+ b1q

b0q

V α

+ b2d a2

Z –1
– direct path parameters; while b0q, b1q, and b2q are the quadrature parameters of the SOGI transfer functions.
+ b1d a1 +
–
Z –1
b0d
+

k osg

V e OSG
Z –1 +
–
FIGURE 4.10
V i