Patent ID: 7733677

Claim:
A converter control system comprising: a current magnitude determination module connected to receive an output current value and a desired output voltage value and provide a current magnitude signal; a power factor correction module connected to receive the current magnitude signal and a phase angle adjustment value and to produce a current phase signal; and a power factor adjustment module comprising; a conversion module for converting the desired output voltage value to a maximum phase voltage value; a first squaring module connected to receive a value of a first component (Vtd) of a switching vector and square said value; a second squaring module connected to receive a value of a second component (Vtq) of the switching vector and square said value; an adder to sum squared values from the first and second squaring modules; a square root module for generating a root value of summed square values from the adder; an addition module to sum the maximum phase voltage value and the root value to produce a difference value; an integrator to process the difference value and to generate a phase angle adjustment value for feedback to the power factor control module; and wherein the power factor is adjusted responsively to a condition in which a desired terminal voltage magnitude exceeds a voltage limit of the converter capability.