Patent ID: 9698642
Date: 2017-07-04
CPC Classifications: F03D,F05B,H02K,H02P,Y02E

Claim:
1. A system comprising: a rotor; a plurality of magnets positioned adjacent to the rotor; a stator defining a plurality of sections, wherein each of the plurality of sections of the stator include a plurality of teeth; a plurality of winding wires wound around the plurality of teeth of each of the plurality of sections of the stator, wherein the plurality of winding wires wound around the plurality of teeth define a plurality of single-phase sub-motors, and wherein at least one of the plurality of single-phase sub-motors is rotationally offset from an adjacent single-phase sub-motor; and a plurality of inverters coupled to the plurality of winding wires, wherein each of the plurality of inverters comprises four switches, wherein two of the switches are configured to switch at a pulse-width modulation (PWM) frequency, and wherein two of the switches are configured to switch at twice a motor electrical frequency.