Spectral Analysis of Signals of Commutator DC Motor

Zygfryd Głowacz, Antoni Zdrojewski             

Summary: Measurement investigations have been carried out for commutator dc motor with internal asymmetries. Construction of considered motor enables to realize the breaking of one rotor coil and shorting of two groups of rotor coils. Each group contains three rotor coils. The basis of study were transients: current and voltage of field winding, current and voltage of armature winding and velocity of the rotor.  In paper are presented selected measurement results and corresponding results of spectral analysis.