Right Harmonic Spectrum for the back-electromotive force of a n-phase synchronous motor

Eric Semail (1) , Xavier Kestelyn (1) , Alain Bouscayrol (1)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697

This paper deals with a vector control of n-phase permanent magnet synchronous machine. To use control algorithms already developed for sine-wave 3-phase machines, the spectrum of back electromotive force (EMF) must contain only odd 2k+1 harmonics which verify the following inequality, 1≤ 2k +1< n . In an experimental vector control of a 5-phase drive, two usual algorithms of sine-wave 3-phase machine are thus used to supply a machine with trapezoidal waveform back EMF. In this case, the first and third harmonics are used to produce torque: the other harmonics, and particularly the 7th one, induce effects as torque ripples and parasitic currents.

Mots clés: Multiphase machine; Synchronous machine

Domaines: Energie électrique

Eric Semail, Xavier Kestelyn, Alain Bouscayrol. Right Harmonic Spectrum for the back-electromotive force of a n-phase synchronous motor. IEEE Industrial Application Society Annual Meeting, Oct 2004, Seattle, United States. pp.1-8, ⟨10.1109/IAS.2004.1348390⟩. ⟨hal-01109558⟩