| Abstract |
In this paper synchronous reluctance machine topologies for an industrial drive application are investigatedregarding to sensorless control and regarding to the flux weakening operation. An inductionmachine drive shall be replaced by a synchronous reluctance machine because of lower machine costsand the possibility of sensorless control. The induction machine stator is intended to be equipped withthe SynRM rotor to provide a modular machine concept. Two different rotor types, a flux barrier and asalient pole machine topology are discussed. By finite element simulation methods both machine typesare designed for a possible operation in flux weakening range with low harmonics. The flux barrier rotorwas already built up as machine prototype and was operated by a position sensorless control. Based onthis implementation key requirements for the optimization of a salient pole machine are identified. Toovercome drawbacks of the salient machine topology several design measures like rotor skewing, statorcoil pitching, rotor pole shaping and unequal pole angles are considered. Finally, a salient pole machinedesign with low harmonics is reached which is expected to be well operated in deep flux weakeningrange. However, the final design shows a lower torque compared to the flux barrier machine. |
