Power transfer for electric motors with segmented windings

An electric motor, comprising:

• a rotor;
• a stator;
• a primary winding coupled to the stator;
• a secondary winding coupled to the stator;
• an inverter coupled to the primary winding;
• and
• a control system coupled to the rotor, primary winding, secondary winding, and inverter, the control system comprising:
• a processor;
• and
• memory coupled to the processor and storing instructions that, when executed by the processor, cause the control system to:
• receive a voltage and a current from the primary winding of the electric motor;
• receive a current from the secondary winding of the electric motor;
• receive a rotor electrical position from the rotor of the electric motor;
• determine a d-axis command voltage for the secondary winding and a q-axis command voltage for the secondary winding based on the primary winding voltage, the primary winding current, the secondary winding current, and the rotor electrical position;
• generate gate control signals based on the determined d-axis command voltage and q-axis command voltage for the secondary winding;
• and
• transmit the gate control signals to the inverter coupled to the secondary winding to control an electrical power transfer between the primary winding and the secondary winding.

A vehicle comprising:

• an electric motor, that includes:
• a rotor;
• a stator;
• a primary winding coupled to the stator;
• a secondary winding coupled to the stator;
• an inverter coupled to the secondary winding;
• and
• a control system coupled to electric motor, the control system comprising:
• a processor;
• and
• memory coupled to the processor and storing instructions that, when executed by the processor, cause the control system to:
• receive a voltage and a current from the primary winding of the electric motor;
• receive a current from the secondary winding of the electric motor;
• receive a rotor electrical position from the rotor of the electric motor;
• determine a d-axis command voltage for the secondary winding and a q-axis command voltage for the secondary winding based on the primary winding voltage, the primary winding current, the secondary winding current, and the rotor electrical position;
• generate gate control signals based on the determined d-axis command voltage and q-axis command voltage for the secondary winding;
• and
• transmit the gate control signals to the inverter coupled to the secondary winding to control an electrical power transfer between the primary winding and the secondary winding.