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Effects of toothless stator design on dynamic model parameters of permanent magnet generators

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2 Author(s)
A. A. Arkadan ; Dept. of Electr. & Comput. Eng., Marquette Univ., Milwaukee, WI, USA ; R. Vyas

The effects of toothless stator design on the dynamic model parameters of permanent magnet (PM) generators are presented. These parameters, which include inductances and induced back EMFs, are determined for a 75 kVA, 208 V, 400 Hz, two-pole, permanent magnet generator. Two particular stator designs, a toothless stator, and a conventional type stator (with iron teeth), are considered. The method which is used to determine these parameters is general in nature and is based on the use of a series of magnetic field solutions. A validation of the computed EMF and inductance values based on experimentally obtained data is given. The results of using these parameters in a state space model in the abc frame of reference to study the effects of a toothless stator design on the PM generator synchronous inductances are presented. Based on that, it is demonstrated that the effects of rotor saliency and armature loading on the machine parameters are minimized in the case of the toothless design

Published in:

IEEE Transactions on Energy Conversion  (Volume:8 ,  Issue: 2 )