Quasi square-wave back-EMF permanent magnet AC machines with fiv

Details Quasi square-wave back-EMF permanent magnet AC machines with fiv Quasi square-wave back-EMF permanent magnet AC machines with fiv

1994-07-27

1997-06-24

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310256, H02K 1604

Patent

active

056420099

ABSTRACT:
A new class of higher phase-order (five or more) quasi square-wave back emf permanent magnet machines including radial, axial and linear embodiments which employ a greater number of active phase windings during continuous operation, thereby utilizing more of the machine copper and magnet material.

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McCleer et al, "Five-Phase Trapezoidal Back EMF PM Synchronous Machines and Drives", 1991; which was presented at the European Power Conference, Florence, Italy, Sep. 3, 1991.

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