Energy-based excitation control of doubly-fed induction wind generator for optimum wind energy capture
Article first published online: 27 JUN 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 16, Issue 5, pages 645–659, July 2013
How to Cite
Song, H.H. and Qu, Y.B. (2013), Energy-based excitation control of doubly-fed induction wind generator for optimum wind energy capture. Wind Energ., 16: 645–659. doi: 10.1002/we.1514
- Issue published online: 18 JUL 2013
- Article first published online: 27 JUN 2012
- Manuscript Accepted: 3 MAR 2012
- Manuscript Revised: 18 JAN 2012
- Manuscript Received: 14 MAY 2011
- doubly-fed induction generator;
- energy-based excitation control;
- port-controlled Hamiltonian model;
- wind energy conversion system
A novel nonlinear energy-based excitation controlling strategy for variable-speed doubly-fed induction wind generator (DFIWG) is proposed in this paper. From the consideration of physical nature and energy flow of the DFIWG, the mechanical subsystem and the electromagnetical subsystem of the DFIWG first have their port-controlled Hamiltonian (PCH) realization. Then taking advantage of the feedback interconnection between the subsystems, the entire PCH model of the DFIWG is established. On the basis of this model, the excitation control for the generator speed adjustment is achieved by energy shaping design with the purpose of optimum wind energy capture. Finally, simulation results via MATLAB/Simulink (MathWorks, Natick, MA, USA) confirm the effectiveness of the proposed approach for wind speeds in different operating stages. Copyright © 2012 John Wiley & Sons, Ltd.