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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...
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...
The influence of the magnetizing inrush is eliminated by the existing transformer protection principles based on the transformer model. However, the errors caused by the imbalance of winding parameters may result in the mal-operation of protection. Based on the loop equations of transformer model, utilizing the unbalanced current in the delta windings to contact the three phases loop equations, the...
Obtaining the transformer internal parameters exactly for physical model based transformer protection is difficult because of the complex electromagnetic relation of the transformer, exemplified by transformer protection method based on the loop equation principle. According to the approaching ability of the artificial neural network, using artificial neural network to approach the electromagnetic...
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