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Related mesh and total harmonic distortion (THD)% for all 144 possible combinations to create new 36‐slot/10‐pole windings extended from the original 12‐slot/10‐pole winding
Source publication
Fractional‐slot concentrated‐windings are appreciated for their simple construction, short end‐winding length, high copper fill factor, low cogging torque, good field‐weakening capability and fault‐tolerant ability. However, in comparison to the conventional distributed windings, the fractional‐slot concentrated‐windings are characterised with high...
Citations
... A synchronous reluctance machine with FSCW has been introduced, and the stator shifting has been used to eliminate the unwanted MMF harmonics. Also, the comprehensive comparison of the case study machine equipped with FSCW and distributed winding has been presented [23]. In [24], an appropriate winding connection for a PM synchronous machine (PMSM) with FSCW has been presented to decrease the torque ripple. ...
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.
