Electric machine comprising an alternating current electric motor and an inverter

A method for supplying an alternating current electric motor that comprises a first semi-winding and a second semi-winding using an inverter that comprises a first inverter branch electrically connected to the first semi-winding and a second inverter branch electrically connected to the second semi-winding, the method comprising:

• providing a first control signal to the first inverter branch so as to induce a first alternating current in the first semi-winding;
• and
• providing a second control signal to the second inverter branch so as to induce a second alternating current in the second semi-winding;
• wherein the first alternating current and the second alternating current have a first frequency,
• wherein the first control signal and the second control signal have a second frequency that is less than the first frequency, and
• wherein the first control signal and the second control signal are reciprocally out of phase by substantially 180° relative to the second frequency.

An electric machine, comprising:

• an alternating current electric motor comprising a first semi-winding and a second semi-winding;
• an inverter comprising a first inverter branch electrically connected to the first semi-winding and a second inverter branch electrically connected to the second semi-winding;
• and
• a control unit configured to provide a first control signal to the first inverter branch, so as to induce a first alternating current in the first semi-winding, and a second control signal to the second inverter branch, so as to induce a second alternating current in the second semi-winding;
• wherein the first alternating current and the second alternating current have a first frequency,
• wherein the first control signal and the second control signal have a second frequency that is less than the first frequency, and
• wherein the first control signal and the second control signal are reciprocally out of phase by 180° relative to the second frequency.