Publication Date : 15/04/2021

Author(s) :

Awah, Chukwuemeka Chijioke, Okoro, Ogbonnaya Inya.

Volume/Issue :
Volume 16
Issue 2
(04 - 2021)

Abstract :

The impact of machine geometry on the performance of a dual-stator permanent magnet machine having different rotor pole numbers as well as dual excitation windings is investigated and reported here. The considered design parameters include the: split ratio, rotor radial thickness, stator back-iron thickness, and rotor inner and outer radial lengths (arcs)/pitch ratios. It is observed that there are optimum values of the design elements needed to yield the best performance due to the changing conditions of the electromagnetic reaction; hence, the following optimal values exist for the above-mentioned design parameters: 0.55, 6mm, 3.5mm, 0.4 and 0.45, respectively. Comprehensive analysis of the effect of design parameters on the fundamental induced-electromotive force (EMF) or back-EMF and losses is implemented using ANSOFT/ANSYS 2D software. It is revealed that the machine topology having 7-rotor pole number has the best efficiency and also the most promising fundamental induced-EMF worth; while the investigated machine configuration having 5-rotor pole exhibits the least amount of eddy current and total core losses.

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