ETD system

Electronic theses and dissertations repository

 

Tesi etd-02132012-124516


Thesis type
Tesi di laurea specialistica
Author
CACCIATORE, RUGIADA
email address
rugiadacacciatore@virgilio.it
URN
etd-02132012-124516
Title
Development of behavioural and functional models of an aircraft synchronous generator
Struttura
INGEGNERIA
Corso di studi
INGEGNERIA AEROSPAZIALE
Commissione
relatore Prof. Denti, Eugenio
relatore Ing. Schettini, Francesco
Parole chiave
  • diode rectifier
  • Matlab/Simulink
  • three-stage synchronous generator
  • average model
  • Amesim
Data inizio appello
06/03/2012;
Consultabilità
parziale
Data di rilascio
06/03/2052
Riassunto analitico
The main purpose of this thesis is to model an aircraft synchronous generator feeding a diode bridge rectifier with a DC load. The system is characterized by three separate brushless synchronous alternators (permanent magnet generator, exciter and main generator) connected in cascade and mounted on the same drive shaft, each loaded with a diode rectifier. A control unit is used to guarantee a specific DC voltage on the load terminals by controlling the excitation voltage of the exciter.<br>Different models of increasing complexity have been developed and compared. Behavioural models, implemented in the simulative environment AMESim, are detailed models that consider the non-ideal behaviour of the diode rectifiers, a consequence of the large value of the generator impedances. Due to time- and memory consumptions of behavioural model simulations, Functional model has been implemented in Matlab/Simulink. This ‘average model’ is used to predict the dynamic system behaviour and to linearize the system, allowing a more detailed study of the controller design in future research activities.<br>
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