Fast copper loss calculation in coil winding of motor by zooming method

Abstract

Purpose

It takes long time for estimating a copper loss in the coil winding of the motor by using the finite element method (FEM). The purpose of this paper is to calculate fast the copper loss by zooming method.

Design/methodology/approach

The authors adopt the “zooming method” to FEM. The authors compare the accuracy and the calculation time with zooming method and normal FEM.

Findings

The zooming method contributes to speeding up and the high accuracy of calculation. In the results, the 43-fold speed increase is achieved in the calculation of synchronous motor compared to usual FEM.

Practical implications

The AC copper loss calculation of 3D motor analysis can be calculated in practical computation time.

Originality/value

The main advantage of employment of zooming method is significantly reduction of the computation time in the loss calculation of the coil winding.

Citation

Katagiri, H., Kazuki, S., Sano, H. and Yamada, T. (2018), "Fast copper loss calculation in coil winding of motor by zooming method", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 37 No. 5, pp. 1626-1634. https://doi.org/10.1108/COMPEL-12-2017-0529