Abstract
Brushless doubly fed reluctance generator (BDFRG) provides a good substitute for the doubly fed induction generator for the wind energy applications due to the nonexistence of the slip rings. Real time modelling of the BDFRG is a challenge due to the high leakage inductance of the stator windings. While the magnetic saturation of the iron parts affects the inductances values, therefore studying the effect of magnetic saturation on the BDFRG performance is important. In this paper, a BDFRG model including iron saturation is built. The finite element (FE) analysis using FEMM software is used to generate the relationship between the generator currents and the inductances, the generated data are recorded in a lookup table. A Simulink model of the BDFRG driven wind turbine, with two cases of constant and variable inductances, are developed and verified with FE analyses at range of wind speeds above and below the synchronous speed. The lookup table proposes is verified using finite element analysis at different modes of operation of wind speed and compared with the constant inductance model to show the importance of saturation inclusion in the generator model for accurate generator modelling representation.
Highlights
The interest of using the brushless doubly fed reluctance generator (BDFRG) in wind power applications is remarkably increased in the recent years due to high efficiency, low maintenance and brushless rotor structure
BDFRG WIND ENERGY CONVERSION SYSTEM This section presents the modelling of the wind turbine model, analytical model of the generator, finite element (FE) model of the BDFRG, and coupling between the analytical equations and the lookup table generated from the FE models
Brushless doubly fed reluctance generators (BDFRGs) real time modelling can be done using the assumption of linear inductances assuming the BH characteristics of the machine is linear
Summary
The interest of using the brushless doubly fed reluctance generator (BDFRG) in wind power applications is remarkably increased in the recent years due to high efficiency, low maintenance and brushless rotor structure. Electric circuit (EC) based model is a better solution when considering the dynamic analysis with the electric grid and the wind turbine mechanical [10]. The purposed BDFRG real time simulation analytical model includes the inductance saturation by using a lookup table generated from the FE model, in this method, the computational time of the FE analysis is independent of the stepping time of simulation.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
