Abstract

This paper presents a decoupled modeling method for asymmetrical dual three phase (DTP)permanent magnet synchronous machine (PMSM). Due to the special structure of this machine, traditional decoupled method cannot be applied on it. This paper proposes a new method that applying inverse voltage to two sets of windings and transferring 6 phase model to a symmetrical 3 phase model, which d-q decoupled control can be used. Simulation result shows the equivalent symmetrical model has exact the same dynamic and steady performance with the asymmetrical dual three phase model.

Highlights

  • More electric aircraft (MEA) has become a trend for its great advantages such as low CO2 emission, low noise, high reliability and etc

  • A dual three phase (DTP) permanent magnet synchronous machine (PMSM) is investigated as starter-generator for aircraft propeller

  • The DTP-PMSM is installed on the propeller shaft like Fig. 1

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Summary

INTRODUCTION

More electric aircraft (MEA) has become a trend for its great advantages such as low CO2 emission, low noise, high reliability and etc. A dual three phase (DTP) PMSM is investigated as starter-generator for aircraft propeller. The DTP-PMSM is installed on the propeller shaft like Fig. 1. It operates as motor during engine-starting period and switches to generator mode after engine starts. The bearingless multisector PMSM is researched in [6]– [9], which divides the stator into 3 parts . This structure is very similar with the DTP machine in this paper but their interest is on the math model and control algorithm between radial force and currents. This paper is organized as follow: section II presents the asymmetrical windings distribution (Part A), asymmetrical inductance matrix (Part B), dual three phase asymmetrical model (Part C) and equivalent XYZ symmetrical model (Part D) of the machine, section III proves the equivalence of two machine model; section IV compare the XYZ model with dual 3 phase model in PLECS and with finite element model in MagNet; section V is conclusion

DUAL THREE PHASE MACHINE MODEL
SIMULATION RESULT
CONCLUSION
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