VGB POWERTECH 10 (2019)

Analysis of a grid integrated wind energy conversion system VGB PowerTech 10 l 2019
Tab. 2. Implementation parameters of the
proposed method.
Fig. 7. Matlab/Simulink model of the proposed method with cascaded H-bridge multilevel
inverter.
anticipated process is depicted in the subsequent
segment.
Case 1: Analysis of normal wind speed
Case 2: Analysis of varied wind speed
Analysis of Case 1
Initially, the implementation of rotor speed
and wind speed are investigated in the regular
situation and summarized in F i g u r e s
8 . In the anticipated procedure, the convenient
section of pitch angle is evaluated
among wind speed (12.5 m/s) and the cutout
wind speed (24 m/s). Suppose, if the
wind speed is lesser than the evaluated
speed, then the anticipated control procedure
is engaged. Although if the wind
speed is better than the evaluated speed,
then the output power of the PMSG is
curved by means of the pitch angle power.
In F i g u r e 8 , the presentation of the
standard situation for examining the rotor
speed and wind speed are illustrated. The
rotor speed and wind speed is represented
by means of an unsystematic task. In F i g -
Description of parameters
Rated wind speed
Base rotational speed
Nominal mechanical output
power
Stator phase resistance
Armature inductance
Values
12 (m/s)
12 (p/u)
605.142 (W)
0.18 (obm)
0.0167 (H)
Pole pairs 4
Rotor type
Round
Flux linkage 0.0714 (V s )
Torque constant 0.4286 (N m )
Inertia 0.00062 J(kgm -2 )
Friction factor 0.00030
F(N ms )
u r e 9 , the dynamic and reactive power of
the PMSG is depicted. At this point the
electrical speed of the PMSG is prohibited
by the finest rational speed in wind speed.
The dynamic power and immediate powers
of PMSG is obtaining resolving progression
at 0.458 seconds. In F i g u r e 10 , the fixed
position output of dc-link voltage at standard
is depicted. The dc voltage is obtains
1,500
Rotor Speed
80
PMSG real Power
Speed in m/s
1,000
500
0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Time in sec
Wind Speed
15
P
60
40
20
0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Time in sec
PMSG reative Power
0.04
Speed in rpm/s
10
5
0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Time in sec
Q
0.03
0.02
0.01
0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Time in sec
Fig. 8. Performance analysis of normal condition with rotor speed and
wind speed.
Fig. 9. Performance of active power and reactive power in
the PMSG.
300
DC Link Voltage
x10 4
2
Grid Vabc
250
0
Voltage in V
>
200
150
100
-2
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Time in sec
Grid Iabc
20
10
50
0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Time in sec
A
0
-10
-20
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Time in sec
Fig. 10. Performance of dc-link voltage at normal operation
Fig. 11. Performance analysis of normal condition with three phase
voltage and current of grid.
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