Research Article
Power Extraction Control of Variable Speed Wind Turbine Systems Based on Direct Drive Synchronous Generator in All Operating Regimes
Figure 8
Simulation of the WFS in normal operation and using backstepping strategy.
| (a) Wind speeds (m/s) |
| (b) Pitch angles (in degree) |
| (c) Coefficient of power, |
| (d) Speed of DDSGs (rd/s) |
| (e) Speed of DDS1 (rd/s) |
| (f) Total power extracted (W) |
| (g) Quadrature current component of DDSG1 (A) |
| (h) Direct current component of DDSG1 (A) |