1. Barcelona 12-15 May 2003 BETA SESSION 4a: Distributed Generation Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distributed Generation Basic Elements of Wind Turbines Modeling

2. Barcelona 12-15 May 2003 Basic Elements of Wind Turbines Modeling Variable Speed Constant Speed _____________Advantages____________ Low Cost Less Complexity Power Quality improvement Less Mechanical Stresses Increased efficiency Possible active-reactive power control Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Pitch controlled fixed pitch active stall

3. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Aerodynamic subsystem Induction generator Model in the arbitrary reference frame Mechanical subsystem Wind Turbines Subsystems

4. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Power Converters SVM SPWM Hysteresis Current Control Vector Control Scalar Control Modulation techniques Control system Dynamic Behavior Assessment Harmonic Distortion Estimation

5. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Scalar Control Vector Control Grid-side Converter Control

6. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Generator Control Vector Control

7. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Scalar Control Generator Control

8. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Modulation Techniques Voltage Space Vector Modulation

9. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Hysteresis Current Control

10. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation SPWM

11. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Constant Current loadsConstant admittance loads Constant Power loads Distribution Network Modeling 2) Electrical Lines Model expressed in the arbitrary reference frame Loads Models 1) Nodal Equations (Synchronous rotating reference frame)

12. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation Study Case

13. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation RESULTS Aerodynamic and electromagnetic torque Rotating speed

14. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation RESULTS Variable speed WT Constant speed WT

15. Barcelona 12-15 May 2003 Nikos HATZIARGYRIOU – Greece – BETA SESSION 4a: Distribution Generation RESULTS Hysteresis current response