Motor system

A motor system, comprising:

• a first inverter which converts direct current power from a first power supply into alternating current power, having PWM mode, overmodulation mode, and square wave mode as modes of operation;
• a second inverter which converts direct current power from a second power supply into alternating current power, having PWM mode, overmodulation mode, and square wave mode as modes of operation;
• a motor which is driven by the alternating current power from the first inverter and the alternating current power from the second inverter, and
• a control unit which configured to calculate a motor voltage vector including a corresponding excitation voltage command and a torque voltage command in response to an output request for the motor and distributes the motor voltage vector to a first inverter voltage vector and a second inverter voltage vector while maintaining the motor voltage vector obtained to control the modes of operation of the first inverter or the second inverter,
• wherein the first inverter voltage vector includes an excitation voltage command and a torque voltage command associated with an output from the first inverter, and the second inverter voltage vector includes an excitation voltage command and a torque voltage command associated with an output from the second inverter.