Performance Comparison Between Surface-Mounted and Interior PM Motor Drives for Electric Vehicle Application

Autor: Alfredo Vagati, Paolo Guglielmi, Barbara Boazzo, Gianmario Pellegrino
Rok vydání: 2012
Předmět:
Zdroj: IEEE Transactions on Industrial Electronics. 59:803-811
ISSN: 1557-9948
0278-0046
DOI: 10.1109/tie.2011.2151825
Popis: Electric vehicles make use of permanent-magnet (PM) synchronous traction motors for their high torque density and efficiency. A comparison between interior PM and surface-mounted PM (SPM) motors is carried out, in terms of performance at given inverter ratings. The results of the analysis, based on a simplified analytical model and confirmed by finite element (FE) analysis, show that the two motors have similar rated power but that the SPM motor has barely no overload capability, independently of the available inverter current. Moreover, the loss behavior of the two motors is rather different in the various operating ranges with the SPM one better at low speed due to short end connections but penalized at high speed by the need of a significant deexcitation current. The analysis is validated through FE simulation of two actual motor designs.
Databáze: OpenAIRE