A Novel Consequent-Pole Contra-Rotating Machine with Zero-Sequence Current Excitation

A novel hybrid excitation consequent-pole contra-rotating machine with zero-sequence current excitation is presented in this paper. The stator windings carry the DC field winding current and the AC armature current, making the machine more compact. Further, the flux can be weakened or enhanced without the risk of demagnetization by controlling the zero-sequence current excitation. Finally, the segmented stator can effectively reduce the iron loss and simplify the manufacturing process.