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The transformation of the polyphase synchronous machine (N phases) to the whole of fictitious machines mono and diphase mechanically coupled and magnetically uncoupled

Α. SELLAM1,* , B. DEHIBA1, M. B. BENABDALLAH1, N. BACHIR BOUIADJRA2, M. ABID1, B. BENSAID1

Affiliation

  1. Laboratory ERICOM , University of Djillali Liabès, Sidi Bel Abbès, 22000 Algeria
  2. AMEL, University of Djillali Liabès, Sidi Bel Abbès, 22000 Algeria

Abstract

In this article, we will simulate the synchronous polyphase machine at permanents magnets, with a load, for using the mathematical model associate with multi-machine concept. The simulation allows us to see the machine behavior and check if the selected model can be used to control the speed and torque by transforming the actual machine into a set of fictitious machines. The polyphases machines are developed mainly in the field of variable speed drives of high power because increasing the number of phases on the one hand allows to reduce the dimensions of the components in power modulators energy and secondly to improve the operating safety. By a vector approach (vector space), it is possible to find a set of single-phase machine and / or two-phase fictitious, equivalent to synchronous polyphase machine. These fictitious machines are coupled electrically and mechanically but decoupled magnetically. This approach leads to introduce the concept of the equivalent machine (multimachine multiconverter system MMS) which aims to analyze systems composed of multiple machines (or multiple converters) in electric drives. A first classification multimachine multiconverter system follows naturally from MMS formalism. We present an example of a pentaphase synchronous machine..

Keywords

Polyphase machines, Multimachine concept, Vector space, Eigenvectors, Eigenvalue, Pentaphase machine.

Submitted at: Sept. 28, 2013
Accepted at: Nov. 7, 2013

Citation

Α. SELLAM, B. DEHIBA, M. B. BENABDALLAH, N. BACHIR BOUIADJRA, M. ABID, B. BENSAID, The transformation of the polyphase synchronous machine (N phases) to the whole of fictitious machines mono and diphase mechanically coupled and magnetically uncoupled, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 11-12, pp. 1339-1345 (2013)