. A text-book of electrical engineering;. the current I^ is induced in the 446 Electrical Engineering latter. It is perhaps helpful to picture the rotor as carrying two distinctwindings each with its own commutator as shown in Fig. 449. Although in the Eichberg motor the two currents are superposed in thesame winding, Latour has suggested the arrangement shown in Fig. 448in which the two currents flow in separate parts of the same winding. Theportions AB and CD carry the main current I = ly and produce the verticalfield y, whilst the current I^ is induced in the short-circuited portions ACand
. A text-book of electrical engineering;. the current I^ is induced in the 446 Electrical Engineering latter. It is perhaps helpful to picture the rotor as carrying two distinctwindings each with its own commutator as shown in Fig. 449. Although in the Eichberg motor the two currents are superposed in thesame winding, Latour has suggested the arrangement shown in Fig. 448in which the two currents flow in separate parts of the same winding. Theportions AB and CD carry the main current I = ly and produce the verticalfield y, whilst the current I^ is induced in the short-circuited portions ACand BD. In the actual Eichberg motor the rotor is not connected directly inseries with the stator winding, but is suppUed with the exciting current lyfrom one of a number of tappings from the secondary winding of a trans-former, the primary of which is connected in series with the stator winding,as shown in Fig. 447. Beyond the possibility of varying the ratio between /and ly Fig. 447 does not differ fundamentally from Fig. 446. lyl.
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