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Abstract

In this paper, an improved configuration of the rotor for an Electric Controlled Permanent Magnet Synchronous machine (ECPMS-machine) is proposed by introducing axial bridges made by lamination or Soft Magnetic Composite (SMC) material in order to minimize mass and iron losses in the rotor. In addition, the influence of the small air-gap in the bridge lamination on a field-weakening range (FWR) of the machine is evaluated by three-dimensional finite-element analysis (3-D FEA). Moreover, the phase back-electromotive force (back-EMF) waveforms achieved by simulation for three novel rotor concepts at different DC coil currents are reported and compared with experimental results obtained on a machine prototype.

Keywords

Hybrid excited machine magnetic bridges FEA analysis

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