Modeling and Design of a High-Speed Wound-Field Synchronous Generator for Aerospace Applications
Dipartimento
INGEGNERIA DELL'ENERGIA, DEI SISTEMI, DEL TERRITORIO E DELLE COSTRUZIONI
Corso di studi
INGEGNERIA ELETTRICA
Relatori
relatore Prof. Bolognesi, Paolo relatore Prof. Nuzzo, Stefano correlatore Prof. Galea, Michael
Parole chiave
Aircraft generator
Analytical model
Electrical machine design
Generatore ad alta velocità
Generatore per aerei
Generatore sincrono
High speed generator
Modello analitico
More electric aircraft (MEA)
Progettazione macchine elettriche
Synchronous generator
Data inizio appello
27/05/2020
Consultabilità
Non consultabile
Data di rilascio
27/05/2090
Riassunto
This master thesis, developed in collaboration with the University of Nottingham Ningbo China, provides the modeling and design of a high-speed, wound-field synchronous generator intended for aerospace applications, in line with the recent trend in the related field known as more electric aircraft (MEA). Firstly, there is a brief overview of the on-board power systems, focusing on the main electrical loads, on the historical development of power generators and on the recent MEA trend. Then, a detailed description of the analytical models employed for the design is provided and a comparison between analytical and finite element (FE) results for an existing salient-pole synchronous generator is performed for validation purposes.The design of the high-speed wound-field synchronous generator is divided into 3 main phases:
•Starting from the technical specification, a preliminary design is carried out using a simplified numerical-analytical model; •The resulting geometry is implemented in a more sophisticated numerical-analytical model, which allows a deeper and more accurate analysis of the electromagnetic performance keeping a low computational cost; •A 2D FE model is built for the electromagnetic design refinement of the generator; •A 3D FE model is built for the structural analysis of the designed generator.
The final version achieves the performance requirements initially assumed, proving that a high-speed, wound-field synchronous machine is a potential candidate for power generation purposes on-board of aircraft, which can ensure reliability and controllability levels not achievable with its permanent magnet counterpart.