Title: Effect of controller coefficients and converter switching frequency on performance and efficiency of electric drives used in electrical vehicles

Authors: A.I. León-Sánchez; E. Romero-Cadaval; M.I. Milanés-Montero; V.M. Miñambres-Marcos

Addresses: Research, Development and Innovation Group, Power Electrical & Electronic Systems PE&ES, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. de Elvas s/n, 06006 Badajoz, Spain ' Research, Development and Innovation Group, Power Electrical & Electronic Systems PE&ES, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. de Elvas s/n, 06006 Badajoz, Spain ' Research, Development and Innovation Group, Power Electrical & Electronic Systems PE&ES, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. de Elvas s/n, 06006 Badajoz, Spain ' Research, Development and Innovation Group, Power Electrical & Electronic Systems PE&ES, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. de Elvas s/n, 06006 Badajoz, Spain

Abstract: The aim of this paper is to analyse the influence of some parameters related with the motors used in electrical vehicles, mainly permanent magnet synchronous and induction motors. The main objective is to minimise the losses in order to increase the vehicle autonomy. In this work, the attention is focused on the selection of the speed controller coefficients and its impact in total losses, using for this analysis the motor speed-torque trajectories. Moreover, the dependency of the switching frequency over the total losses in the motor-converter device is shown. The analysis determines the optimum value for the switching frequency and the results are compared with commercial drives.

Keywords: electrical vehicles; permanent magnet synchronous motors; PMSM; induction motors; electrical drives; losses optimisation; speed controller coefficients; converter switching frequency; autonomous vehicles; vehicle design.

DOI: 10.1504/IJVD.2012.047403

International Journal of Vehicle Design, 2012 Vol.58 No.2/3/4, pp.325 - 347

Available online: 18 Jun 2012

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