Patent ID: 11955919
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The electric motor system according to claim 1, wherein:
the electric motor system comprises U-phase, V-phase and W-phase windings as the plural-phase windings;
the U-phase, V-phase and W-phase windings respectively comprise forward windings and reverse windings which are not directly connected;
the forward windings and the reverse windings of respective phases are arranged at teeth defined for the forward windings and the reverse windings of the respective phases among a plurality of the teeth; and
the electric motor system comprises:
a first inverter to which respective first ends of a U-phase forward winding, a V-phase reverse winding and a W-phase forward winding are connected, and which applies a current for generating rotating fluxes around the rotor, to the U-phase forward winding, the V-phase reverse winding and the W-phase forward winding;
a first zero-phase switching arm to which respective second ends of the U-phase forward winding, the V-phase reverse winding and the W-phase forward winding are commonly connected, and which adjusts a zero-phase current flowing through a common connection point of the U-phase forward winding, the V-phase reverse winding, and the W-phase forward winding;
a second inverter to which respective first ends of a U-phase reverse winding, a V-phase forward winding, and a W-phase reverse winding are connected, and which applies a current for generating rotating fluxes around the rotor, to the U-phase reverse winding, the V-phase forward winding, and the W-phase reverse winding; and
a second zero-phase switching arm to which respective second ends of the U-phase reverse winding, the V-phase forward winding, and the W-phase reverse winding are commonly connected, and which adjusts a zero-phase current flowing through a common connection point of the U-phase reverse winding, the V-phase forward winding, and the W-phase reverse winding.