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This paper presents a comprehensive analysis and comparison of air-cored axial-flux permanent-magnet machines with different types of coil configurations. Although coil factor is particularly more sensitive to coil-band width and coil pitch in air-cored machines than conventional slotted machines, remarkably no comprehensive analytical equations exist. Here, new formulas are derived to compare the...
Continued operation of motor drive systems under a short-circuit fault in one of the motor windings is discussed and analyzed in this paper. At this operating condition, the fault current may have a very high value which may instantaneously burn the motor windings and cause immediate catastrophic failure. Therefore, these severe fault conditions are analyzed in depth by the utilization of a commercial...
Permanent magnet synchronous machines (PMSM) are used in x-by-wire systems, because of the high efficiency and its good dynamic properties. To investigate the performance of the machine at fault situations, a 3-phase, 16-pole prototype (rated state torque 1.7 Nm, overload torque 20 Nm for impulse torque actuation) with tooth coils was built with the possibility for measuring different kinds of winding...
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