Abstract
This paper relates to the works on the control and the identification of multiphase motors flux applied on electric ship propulsion. It describes a vector control namely the Field Oriented Control (FOC) strategy using Four-Vector 24-Sector Modulation (FV24SM) based on VSD method (Vector Space Decomposition). This technique consists of orienting flux components for Dual Three-Phase Permanent Magnet Synchronous Motor (DTP-PMSM) ship supplied by two identical and independently Voltage Source Inverter (VSI) connected by two DC sources. The dynamic model and the motor’s control are carried out in three subspaces that are both two-dimensional and orthogonal. The key of the proposed strategy is to reduce more the extra stator harmonic current components on (z 1 , z 2 ) subspace, namely the harmonic-component subspace, that produces losses. Thereby, the reference voltage vector selection principle and the time calculation method are presented. The validity and the efficiency of the adopted strategy are illustrated by simulation results.
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