Methods and systems for controlling a power inverter in an electric drive
system of an automobile are provided. The various embodiments control the
power inverter by, responsive to a commanded torque of the electric motor
being below a first torque level, controlling the power inverter to set a
switching frequency of the power inverter at a first set frequency; and,
responsive to the commanded torque of the electric motor being between
the first torque level and a second torque level, controlling the power
inverter to determine the switching frequency of the power inverter as a
function of the commanded torque of the electric motor while maintaining
the switching frequency above a dynamic frequency limit. The method
reduces switching frequencies in the inverter at high commanded torques,
while maintaining the switching frequencies above dynamic frequency limit
that provides effective control over the motor.