Design and Performance Comparison of Fractional Slot Concentrated Winding Spoke Type Synchronous Motors With Different Slot-Pole Combinations
| Autor: | Matthias Koch, Sunny Zhang, Nicola Bianchi, Enrico Carraro |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Computer science Stator 020208 electrical & electronic engineering Torque density Cogging torque 02 engineering and technology 01 natural sciences Industrial and Manufacturing Engineering Automotive engineering law.invention Control and Systems Engineering Electromagnetic coil law Magnet 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Torque Torque ripple Electrical and Electronic Engineering Synchronous motor |
| Zdroj: | IEEE Transactions on Industry Applications. 54:2276-2284 |
| ISSN: | 1939-9367 0093-9994 |
| Popis: | Fractional slot concentrated winding (FSCW) interior permanent magnet (IPM) synchronous motors are nowadays an attractive solution in automotive applications due to their advantages in terms of high performance and manufacturing simplicity. Among the different topologies, the spoke type is an effective configuration when high torque density is required. On the other hand, the motor performance are heavily related to the selected slot-pole combination. This choice is critical in demanding automotive applications, such as electric power steering (EPS) systems, where high constraints in terms of torque density, torque quality, flux weakening performance, and noise/vibration/harshness are requested. This paper deals with the design and analysis of eight optimal slot/pole combinations FSCW IPM spoke type EPS motors. Two different low cost heavy rare earths free PM typologies, ferrite and hot-pressed NdFeB, are considered. A design and optimization procedure based upon the finite element analysis is presented. The impact of the magnetic properties and the slot/pole combination on the optimal motor dimensions, torque density, and motor cost is discussed. Cogging torque, torque ripple, electromechanical performance, and the stator deformation of the machines are evaluated, and the results are compared, highlighting the advantages and the differences among the solutions. |
| Databáze: | OpenAIRE |
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