Mixed bar and wire conductor combinations for stators of high-speed electric motors

A method of assembling an electric machine, the method comprising:

• receiving a housing of the electric machine;
• attaching a stator to the housing;
• attaching a rotor to the housing such that the rotor is movable with respect to and spaced across an airgap from the stator;
• attaching a plurality of magnets to one of the rotor or the stator;
• and
• attaching a plurality of electromagnetic conductors to the other of the rotor or the stator, the electromagnetic conductors including a plurality of wire conductors and a plurality of bar conductors, the wire conductors located adjacent the airgap and each having a first cross-sectional area, and the bar conductors located adjacent the wire conductors, radially spaced from the airgap, and each having a second cross-sectional area larger than the first cross-sectional area,
• wherein the bar conductors are grouped into a single rectilinear line and spaced from each other, and wherein the wire conductors are grouped into multiple rectilinear lines and spaced from each other.

An electric machine, comprising:

• a housing;
• a stator attached to the housing;
• a rotor movable with respect to and spaced across an airgap from the stator;
• a plurality of magnets attached to one of the rotor or the stator;
• a plurality of electromagnetic conductors attached to the other of the rotor or the stator, the electromagnetic conductors including a plurality of wire conductors and a plurality of bar conductors, the wire conductors located adjacent the airgap and each having a first cross-sectional area, and the bar conductors located adjacent the wire conductors, radially spaced from the airgap, and each having a second cross-sectional area larger than the first cross-sectional area;
• a first power inverter module (PIM) electrically coupled with and configured to control a feed of electric current to the wire conductors and not the bar conductors;
• and
• a second PIM electrically coupled with and configured to control a feed of electric current to the bar conductors and not the wire conductors.