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Low-cost compact permanent magnet machine for adjustable-speed pump application

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3 Author(s)
Caricchi, F. ; Dept. of Electr. Eng., Rome Univ., Italy ; Crescimbini, F. ; Honorati, O.

The variable-speed driven pump can result in significant energy conservation where reduced flow rates are required for long periods of time. In regard to adjustable-speed pump drives, one major contribution of this paper is the demonstration that a permanent magnet (PM) motor based on the slotless axial-flux permanent magnet machine (AFPM) topology can be a suitable candidate to advantageously compete with the induction motor for such a low-cost drive application. For the purpose of a cost comparison, the paper discusses design and construction of a prototype machine which has been conceived to replace a 1.2 HP induction motor being used in a standard adjustable-speed pump drive. Results taken from laboratory tests of the prototype machine are reported, together with an assessment of the machine manufacturing cost

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Industry Applications, IEEE Transactions on  (Volume:34 ,  Issue: 1 )