A Modified RBF Neuro-Sliding Mode Control Technique for a Grid Connected PMSG Based Variable Speed Wind Energy Conversion System

Figure 11

Control system response to wind speed fluctuations with parameters uncertainties (at time , variations of for , for , for , and for are introduced). (a) Estimated parameters. (i) : (dotted line) estimate () and (solid line) its transformed estimate (), (ii) : (dotted line) estimate () and (solid line) its transformed estimate (), and (iii) : (dotted line) reference and (solid line) its estimate. (b) Zoom on control signals: (i) approximation of phase voltage of the MSC ; (ii) phase voltage of the GSC .

(a)

(b)