×

System, method and apparatus for controlling converters using input-output linearization

  • US 8,810,221 B2
  • Filed: 06/18/2009
  • Issued: 08/19/2014
  • Est. Priority Date: 06/18/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method for controlling a boost converter, having a voltage source to which an inductor is connected at a first polarity, the inductor having inductance L and parasitic resistance RS further connected to a diode S2 at a first node, a load resistor of resistance R connected in series to diode S2 at a second node and to the voltage source at a second polarity, a switch S1 connected in parallel with the load resistance and diode S2 at the first node, a capacitor of capacitance C and equivalent resistance Rc connected in parallel with the load resistor at the second node, the method using a PWM modulator/controller and comprising the steps of:

  • receiving a first voltage y from an output of the boost converter, a second voltage y0 from a reference voltage source, a first current x1 from an inductor within the boost converter and a fourth voltage u0 from the voltage source providing an input voltage to the boost converter at the PWM modulator/controller;

    creating a third voltage representing a difference between the first voltage from the output of the boost converter and the second voltage from the reference voltage source;

    adjusting the third voltage by a gain k;

    creating a control signal that provides leading-edge modulation with input-output linearization based on the first voltage from the output of the boost converter, the second voltage from the reference voltage source, the adjusted third voltage, the fourth voltage from the voltage source or the input of the converter, and the first current from the inductor within the boost converter, wherein the control signal has a duty cycle d defined by

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×