Patent ID: 8508166

Claim:
A controller comprising: a voltage determination module that determines a desired direct current (DC) bus voltage for a DC bus electrically connected between a power factor correction (PFC) module and an inverter power module that drives a motor, wherein the voltage determination module determines the desired DC bus voltage based on at least one of a torque of the motor, a speed of the motor, an output power of the inverter power module, and a drive input power; a bus voltage command module that determines a commanded bus voltage based on the desired DC bus voltage and that increases the commanded bus voltage to a greater one of the desired DC bus voltage and a first sum when the commanded bus voltage is less than either the desired DC bus voltage or the first sum, wherein the first sum is equal to a predetermined offset plus a peak voltage of an AC line powering the PFC module; and a PFC control module that controls the PFC module to create a voltage on the DC bus that is based on the commanded bus voltage.