OVERMODULATION USING RECTANGULAR CARRIER-BASED PULSE-WIDTH MODULATION IN ELECTRIFIED VEHICLES

A control system for an electric motor of an electrified vehicle includes an inverter of the electrified vehicle, the inverter comprising a set of switches and being configured to receive three pulse-width modulation (PWM) signals and to control the set of switches to generate an alternating current (AC) output voltage from a direct current (DC) link voltage provided by a battery system of the electrified vehicle, and a control system configured to determine a torque command for the electric motor, determine commanded d-axis and q-axis voltages based on the torque command, generate a rectangular wave modulating signal for carrier-based PWM based on the commanded d-axis and q-axis voltages, generate the three PWM signals by performing carrier-based PWM using the rectangular wave modulating signal, and control the electric motor using the AC output voltage generated by the inverter.