Practical calculation of dynamo-electric machines; a manual for electrical and mechanical engineers and a text-book for students of electrical engineering: continuous current machinery; (1902)
Wiener, Alfred Eugene · New York, Electrical world and engineer · leaf 525
line. The same effect, however, can be pro-duced by connecting each two polepieces by a pole-bridge. Fig.320, or by employing a special pole-ring, Fig. 321, carrying thecommutation lugs as well as the balancing coils. In any case 466 D YNA MO-ELECTRIC MA CHINES. [§124 the slots A and B, adjoining… … Fig. 318.—Polepiece Provided with Ryan Balancing Coils. ance of the magnetic circuit on account of reducing, by virtueof the slots for the balancing coils, the cross-section of the pole-pieces; this requires additional field-excitation; (2) increasedmagnetic leakage owing to the close proximity of…
Electric machinery -- Design and construction · Electric machinery -- Direct current
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
