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The interior permanent magnet (IPM) machine with fractional-slot concentrated-windings (FSCW) has become a popular research topic owing to their novel structures and attracting potentials. This paper is focused on inductances and saliency ratios in IPM FSCW machines with different pole and slot combinations. Analytical expressions of inductances and saliency ratios are derived using harmonic analysis...
It is widely recognized that interior permanent magnet (IPM) synchronous machines are suitable for vehicular applications, especially served as traction drives for hybrid and battery electric vehicles. In this paper, IPM machines with rare earth permanent magnets (REPM) and machines with ceramic ferrite permanent magnets (CFPM) specially designed with stronger flux-concentration rotor structure are...
A test stand to determine the performance of a dynamic-static rotor separator is described. An experimental study has been conducted of the separator at different air flow rate and rotor rotating speeds with pulverized coal serving as a raw material. Experimental results indicate that either an increase of the rotor rotating speed or a decrease of the air flow rate can increase the fineness of the...
Induction motor which has a good use in centrifugal pump and fan drive, possesses the characteristics of slip power being able to be fed back, little converter capability, stepless speed adjustment around synchronous speed, and so on. In order to realize the rotor energy flowing bidirectional and high efficiency, auxiliary windings embedded in stator of induction motor (IFIM) are used to absorb or...
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