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Due to limited space availability in vehicular applications, machines with high torque density are required. One of the ways to maximize space is by reducing machine end winding length and increasing its effective stack length. This paper illustrates a general design process used for implementing non-overlapping concentrated windings an interior permanent magnet (IPM) machine for field weakening applications...
It is evident that winding inductance is a key design parameter, hence understanding how it varies with different winding types is essential. This paper presents a proposed finite element (FE) method in which the d- and q- axis inductances of the IPM machine with fractional-slot concentrated windings can be accurately determined. The effects that fractional-slot concentrated windings has on the d-...
The implementation of concentrated windings in interior permanent magnet (IPM) machines has numerous advantages over distributed windings, with the disadvantage being mainly the decrease in saliency ratio. This paper presents a proposed finite element (FE) method in which the d- and q-axis inductances (Ld and Lq) of the IPM machine with fractional-slot concentrated windings can be accurately determined...
The application of concentrated windings in permanent magnet machines significantly reduces overall machine length, due to the elimination of end winding overlap making it more suitable for areas with space limitations. Efficiency is also increased due to the reduction of copper loss. In order to take full advantage of these benefits, optimization strategies have been implemented and its effects are...
The interior permanent-magnet (IPM) machine is used in many industrial drives. In order to analyze performance and to design efficient and fast controllers, accurate knowledge of machine parameters such as d- and q-axes inductances is essential. Although there are a number of methods available to calculate these inductances, none of them is considered standard. Accuracy levels of all these methods...
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