Transient Response or Direct-Current Dynamos

Equations for the transient current of both the armature and field of a d-c shunt-wound machine are developed. The equations are derived from the theorem of constant flux linkages and in terms of the mutual inductance between the armature and shunt field. Methods for measuring this mutual inductance as well as other constants of the machine are developed. It is believed that the analysis can be extended to include almost any type of d-c dynamo, including the amplidyne. The results obtained from the theoretical analysis are in agreement with experimental data.