Automatic commutation control device for DC machine - has brushes divided and arranged in tandem or tandem pairs

摘要

All commutation poles have at least two windings (g1, f1pitches, separately allocated to leading or trailing brush edges. Current carrying flexible leads are suitably connected to tandem or double brushes (B1, 1collecting ring(s). As well as the normal alternating pole and compensation winding with connections (G, H) and a complete number of turns (W) additional alternating pole windings are provided with connections (g1, h1, g2, h2). In this example the windings have the same number of turns yet constitute only about a tenth of the complete winding (W).