Authors: M.H. Haque
Addresses: School of Engineering, University of South Australia, Mawson Lakes 5095, Australia
Abstract: This paper proposes a simple method of incorporating magnetic saturation in determining terminal characteristics of a type 1 wind generating system employing a squirrel-cage induction generator. In determining the terminal characteristics, the generator is represented by its traditional per-phase equivalent circuit as well as two-axis model. In both cases, the magnetic saturation is carefully incorporated in determining the characteristics of the generator. The system of equations obtained through the per-phase equivalent circuit is solved using an optimisation routine to get the steady state characteristics. The two-axis model is implemented into MATLAB/Simulink to obtain time domain responses of the generator including the steady state values. Simulation results obtained through the optimisation routine and the MATLAB/Simulink are also compared with the corresponding actual values found through an experimental setup consisting of a 1.5 kW induction machine.
Keywords: fixed speed wind generators; induction generators; magnetic saturation; modelling; type 1 wind generating systems; simulation; wind turbines; wind energy; wind power; optimisation.
International Journal of Renewable Energy Technology, 2015 Vol.6 No.1, pp.18 - 34
Received: 22 Apr 2013
Accepted: 05 Nov 2013
Published online: 13 Feb 2015 *