|Tipo di tesi||Tesi di dottorato di ricerca|
|Titolo||Modellistica e Controllo di Motori Sincroni Polifase per Applicazioni Automotive|
|Titolo in inglese||Modeling and Control of Multi-phase Synchronous Motors for Automotive Application|
|Settore scientifico disciplinare||ING-INF/04 - AUTOMATICA|
|Corso di studi||Scuola di D.R. in INFORMATION AND COMMUNICATION TECHNOLOGIES (ICT)|
|Data inizio appello||2013-03-11|
|Disponibilità||Accessibile via web (tutti i file della tesi sono accessibili)|
Negli ultimi due decenni l'interesse per le macchine elettriche con più di tre fasi per applicazioni a velocità variabile è aumentato in tutto il mondo.
In the last two decades the interest in electrical machines with more than three phases for variable speed applications is increased worldwide. The fault tolerant capability of multi-phase motor drives and the possibility to enhance the motor torque by injecting an higher order of stator current harmonics, make the multi-phase synchronous machines suitable for Electric and Hybrid Electric Vehicles where reliability and power density are very important issues. Thus, this dissertation addresses the modeling and the control of multi-phase permanent magnet synchronous motor in order to improve the efficiency and the safety of the new Electric and Hybrid Electric Vehicles. As regard these two topics the first part of this thesis deals with the multi-phase synchronous motors in healthy condition, while the second part investigates this type of motors under the open-phase fault condition. The Power-Oriented Graphs modeling technique with a vectorial notation is exploited obtaining an approach as general as possible. All the electrical and mechanical lumped parameters of the motor (i.e. the number of phases, the type of stator connection, the shape of the rotor flux, the number of faults, etc..) can be modified without changing the structure of the models which can be directly implemented in the Matlab/Simulink environment. Starting from these models and using a vectorial approach the optimal current reference which provides the desired torque minimizing the dissipation and satisfying the limit current in healthy and fault condition is proposed. The presented controls can be used for any shape of the rotor flux, for a generic odd number of phases and in presence of one or more phase failures. The simulation results validate the effectiveness of the control techniques addressed in this dissertation. At the end of this thesis the proposed models and controls are employed in the dynamic power control of the Toyota Hybrid System. The simulation results of the proposed hybrid vehicle set the basis for future studies on new architectures of Electric and Hybrid Electric Vehicles which exploit the advantages brought by the use of this type of motors.