Optimization of In-Wheel Permanent Magnet Synchronous Motor for Electric Car

Optimization of In-Wheel Permanent Magnet Synchronous Motor for Electric Car

Hejra Msaddek, Ali Mansouri, Trabelsi Hafedh
Copyright: © 2015 |Pages: 17
DOI: 10.4018/IJEOE.2015070101
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Abstract

The objective of this work is to find the optimal geometric parameters for the design of permanent magnet synchronous machines (PMSM) with inversed structure (outer rotor) for electric vehicles applications. Firstly, the machine model is presented with a special attention given to the calculation of the mass and engine efficiency. A multi objective optimization based on the genetic algorithm is then implemented. It will determine the parameters values that optimize the chosen criteria while respecting the specifications: to minimizing the total mass and maximizing the machine efficiency. Finally, 2D steady-state finite element analysis is used for to verify the results given by the optimization method.
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2. Design Of Pmsm

Permanent magnet synchronous machine became recently very famous in different applications like electric vehicles, renewable energy, robotics…etc (Msaddek et al, 2014). This is due to their high power density, high efficiency and low maintenance cost (Ashabani et al, 2011). They are often required to have a performance characteristic, which presents constant torque to a base speed and constant power to an elevated speed. For this reason, the manufacturer has a great tendency to design and optimize PMSM.

Permanent magnet machines became the main contender in the application of in-wheel motor due to the compromise between high torque density and high efficiency (Lovatt, Ramsden & Mecrow, 1998; Msaddek et al, 2014).

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