Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 130
cflux necessary to obtain the higher internal voltage havenot been considered in the foregoing. 54. Devices for Reducing Armature Reaction. — Thedistortion of the magnetic field may be diminished bylengthening the air-gap and working the armature teeth athigh flux densities, thereby increasing the… … ii D1 A in Fig. 74. Magnetic field distortion may be reduced by slotting thefield poles longitudinally. This considerably increases thereluctance of the path of the cross flux by introducing in itan air-gap, whereas the reluctance of the main flux path isvery slightly altered. Fig. 74 shows a…
Electric machinery
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