European Journal of Scientific Research - EuroJournals

Robust Control of a Doubly Fed Asynchronous Machine of a Wind Turbine System 801
Figure 5: Maximum singular values of the system uncertainties m
Singular values
Singular values
10 3
10 2
10 1
10 0
10 -1
10 1
10 0
10 -1
10 -2
10 -3
10 -4
10 -5
10 -6
10 -4
10 -4
10 -3
10 -2
10 -1
10 0
Pulsations rad/sec
Δ bounded by the singular values of ( jw)
σ
[ ( jw)
]
Figure 6: Singular Values of the weighting performance specification
10 -3
10 -2
10 -1
10 0
Pulsations rad/sec
10 1
10 1
W t
10 2
10 2
σ
[ Δ ( jw)
]
m
10 3
10 3
10 4
10 4
W t
.