Six-phase Fractional Slot Concentrated Winding Permanent Magnet Synchronous Motor with Reduced Torque Ripple

Munteanu, Adrian

doi:10.1109/epe56121.2022.9959854

Cited by 1 publication

(1 citation statement)

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“…In [24], an appropriate winding connection for a PM synchronous machine (PMSM) with FSCW has been presented to decrease the torque ripple. In [25], a comprehensive study on the PMSM with FSCW has been implemented. In this reference, radial and tangential forces and vibration between the conventional and proposed structures have been compared using FEM.…”

Section: Introductionmentioning

confidence: 99%

An analytical formula for back EMF waveform of a counter‐rotating dual‐rotor non‐slotted axial flux permanent magnet synchronous machine

Mirzahosseini,

Rahimi Namaghi

2024

IET Generation Trans & Dist

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Fractional slot concentrated winding (FSCW) permanent magnet (PM) machines are gaining more attention for low‐speed applications because of their great advantages. This paper proposes a new structure for an FSCW double rotor axial flux PM synchronous machine (DRAFPMSM) with counter‐rotating rotors. In addition, an analytical formula for the Back EMF waveform of the proposed structure is presented. The accuracy of the formula is investigated by designing a 40 W sample machine. The rotors of this machine rotate with speeds of 600 and 428 rpm in opposite directions. The Back EMF of the sample machine is calculated using the suggested formula. In addition, the finite element method (FEM) is used to determine the Back EMF waveform. Comparison of the obtained results confirms that the new formula yields the Back EMF precisely such that the results well match to those of FEM. The effect of the relative position of two rotors on the Back EMF waveform is investigated using the proposed formula. In addition, the optimum relative position of two rotors for minimizing the Back EMF THD of the case study machine is determined.

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Section: Introductionmentioning

confidence: 99%