Power Control of a Grid-Connected Doubly Fed Induction Generator Using H∞ Control and Kalman Filter

Table 1

Comparisons between the controllers.

Name of controller	Advantages	Limitations
Proposed controller	(i) Nominal performance; (ii) Proper tracking; (iii) Noise and perturbation attenuation; (iv) Robust stability; (v) Optimal state between VC with PI controller and conventional DPC	—
VC with PI controller	(i) Nominal performance; (ii) Simplicity of structure	(i) Sensitive to PI controller parameters and the machine parameters; (ii) Sensitive to measurement uncertainty
Conventional DPC	(i) High tracking nominal performance; (ii) Almost robustness	(i) The maximum oscillation; (ii) Variable switching frequency; (iii) Sensitive to measurement uncertainty
Others controllers	(i) The robustness during uncertainties [24]; (ii) The robustness against parametric variations and good performances [25]; (iii) The robustness against parametric variations and good performances [26]	(i) Not checking measurement uncertainty; (ii) Not checking parametric uncertainty [24]