Inductances and back-emf harmonics influence on the Torque-Speed characteristic of five-phase SPM machineReport as inadecuate




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1 IRENAV - Institut de Recherche de l-Ecole Navale EA 3634 2 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - EA 2697

Abstract : In this paper, the study of torque-speed characteristic for five-phase Surface-mounted Permanent Magnet SPM machine is carried out.
With considering several hypothesis linear magnetic modelling, only first and third harmonic terms in the back-emf and current spectrums, an optimization problem that aims to maximize the torque for given maximum voltage and RMS current is formulated: the optimal torque sharing among the two virtual machines the two dq-axis subspaces that represent the real five-phase machine is thus calculated for any mechanical speed.
For an inverter and a DC voltage sized with only considering the first harmonic of back-emf and current, the problem is solved with changing the ratio between the two virtual machine back-emfs and changing the ratio between the two virtual machine inductances.
The results are examined by introducing particular speed points.


Keywords : Multi-phase machine Flux weakening Electrical machine speed range





Author: Franck Scuiller - Eric Semail -

Source: https://hal.archives-ouvertes.fr/



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