Analysis of Dual 3-Phase Fractional-Slot Concentrated Winding PM Synchronous Machines with Different Angle Displacements

Advances in Dual-Three-Phase Permanent Magnet Synchronous Machines and Control Techniques

“…It should also be mentioned that the average torques produced under (Figure 13) are clearly lower than those produced under healthy conditio To maintain the torque capability of the machine, the input currents need to The variations of average torque with input current amplitudes in the mach ferent configurations under three-phase OC conditions are shown in Figur concluded that the 15° displacement offers the best over-rating capability phase OC conditions, compared with its 0° and 30° counterparts. The sup over-rating capability in the 15° displacement under three-phase OC con explained by its relatively low sub-harmonic distributions [47]. Furthermore It should also be mentioned that the average torques produced under OC conditions (Figure 13) are clearly lower than those produced under healthy conditions (Figure 12).…”

“…According to the analyses presented above, a 24 slot/10 pole PMSM and a 24 slot/22 pole PMSM can be equipped with DTP windings with 0 • , 15 • , and 30 • angle displacements, respectively [46,47]. The coil EMF phasors and the winding arrangements of the two machines with different winding configurations are shown in Figures 8 and 9.…”

“…It can be concluded that the 15 • displacement offers the best over-rating capability under threephase OC conditions, compared with its 0 • and 30 • counterparts. The superiority of the over-rating capability in the 15 • displacement under three-phase OC conditions can be explained by its relatively low sub-harmonic distributions [47]. Furthermore, it is also suggested that the 15 • winding configuration features the lowest PM demagnetization risk among the three winding configurations, because the peak values of flux densities produced by the armature reaction are the lowest in the 15 • winding configuration [47].…”

Effect of angle displacements on electromagnetic performance of dual three‐phase consequent‐pole permanent magnet machine

“…In [20], the angle between the two sets of three phase winding is investigated and it is found that the PM machine with 30°displacement has the largest short circuit current, while it is the smallest one for the 15° displacement. In [21], the influence of the angle displacement on the electromagnetic performance under healthy and open‐circuit conditions is investigated without considering short circuit current as well as the braking torque.…”