Riassunto analitico
Electrification of powertrains is becoming one of the main driver of the automotive industry. This trend requires a big effort by the car manufacturers in order to design suitable devices to electrify their vehicles. Among these devices, electric motors are for sure one of the most important, since they are a key component for both, hybrid electric vehicles and full-electric vehicles.
In this work, the design process of an electric motor specifically thought for traction applications is described. In this case, the motor is thought to be part of an electrified axle for high performance vehicles. As a first application the formula SAE electric car of university of Modena and Reggio Emilia is selected, providing some constraints in the design due to the championship regulation.
Here, an overview on electric motors is made, with the aim to identify the main features of these devices and take suitable choices during the design process.
Then, the design process is described, starting from the setting of project targets, stated having as reference point the data obtained from the internal combustion engine formula SAE vehicle. After that, some preliminary analytical calculations are made in order to obtain a first motor geometry, which could accomplish the targets previously selected. Finally, the motor is analysed via finite element method, validating the calculations made and optimizing the geometry previously achieved. Results of structural analysis are reported too, in order to verify the mechanical resistance under loads of the motor.
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Abstract
Electrification of powertrains is becoming one of the main driver of the automotive industry. This trend requires a big effort by the car manufacturers in order to design suitable devices to electrify their vehicles. Among these devices, electric motors are for sure one of the most important, since they are a key component for both, hybrid electric vehicles and full-electric vehicles.
In this work, the design process of an electric motor specifically thought for traction applications is described. In this case, the motor is thought to be part of an electrified axle for high performance vehicles. As a first application the formula SAE electric car of university of Modena and Reggio Emilia is selected, providing some constraints in the design due to the championship regulation.
Here, an overview on electric motors is made, with the aim to identify the main features of these devices and take suitable choices during the design process.
Then, the design process is described, starting from the setting of project targets, stated having as reference point the data obtained from the internal combustion engine formula SAE vehicle. After that, some preliminary analytical calculations are made in order to obtain a first motor geometry, which could accomplish the targets previously selected. Finally, the motor is analysed via finite element method, validating the calculations made and optimizing the geometry previously achieved. Results of structural analysis are reported too, in order to verify the mechanical resistance under loads of the motor.
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