On the Correction Factor of the Air Gap Induction in Electric Machines

Abstract

The flux distribution along the air gap in electric machines with open slots is investigated experimentally by electrodynamical method for the case:-
(1) With slots on one surface only, and
(a) infinite tooth permeability.
(b) constant tooth permeability.
(2) With slots on both opposing surfaces, and infinit tooth permeability. From the results obtained, the writer has established an experimental formula for air gap correction factor, and compared with formulae proposed by many authors hitherto.