Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 119
f the shuntmotor is unchanged while that of the compound motor is in-creased due to the series field coils, therefore the compound motorhas the greater torque but the lower speed. For loads less than full-load on the other hand, the flux per pole of the compound motor isless than that of the shunt… … ^ i ^V * / / K.p.m. Sbunt**~>>^i / / a // » M a </\ JWA H Armature Current la Fig. 117.—Characteristic curves of compound motors. are shown in Fig. 117. Unlike the series motor, the compoundmotor has a safe maximum speed at no-load and so cannot runaway on light loads. The speed of a…
Electrical engineering
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