Patents by Inventor Martinus David Dorfling

Martinus David Dorfling has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Model predictive pulse pattern control based on small-signal pulse pattern optimization
    Patent number: 11967908
    Abstract: Disclosed herein is a method for controlling an electrical converter system that includes: determining a nominal pulse pattern (tp,i*, ?up,i*) and a reference trajectory (x*) of at least one electrical quantity of the electrical converter system over a horizon of future sampling instants, the nominal pulse pattern (tp,i*, ?up,i*) comprises switching transitions (?up,i*) between output voltages of an electrical converter of the electrical converter system and the reference trajectory (x*) indicates a desired future development of an electrical quantity of the converter system; determining a small-signal pulse pattern (?abc(t, ?p,i)) by minimizing a cost function; determining a modified pulse pattern (topt,p,i, ?up,i) by moving the switching transitions of the nominal pulse pattern (tp,i*, ?up,i*) to generate modified switching transitions; and applying at least the next switching transition of the modified pulse pattern (topt,p,i, ?up,i) to the electrical converter system.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: April 23, 2024
    Assignee: ABB Schweiz AG
    Inventors: Martinus David Dorfling, Hendrik Du Toit Mouton, Tobias Geyer
  • Model predictive pulse pattern control based on small-signal pulse pattern optimization
    Publication number: 20220368247
    Abstract: Disclosed herein is a method for controlling an electrical converter system that includes: determining a nominal pulse pattern (tp,i*, ?up,i*) and a reference trajectory (x*) of at least one electrical quantity of the electrical converter system over a horizon of future sampling instants, the nominal pulse pattern (tp,i*, ?up,i*) comprises switching transitions (?up,i*) between output voltages of an electrical converter of the electrical converter system and the reference trajectory (x*) indicates a desired future development of an electrical quantity of the converter system; determining a small-signal pulse pattern (?abc(t, ?p,i)) by minimizing a cost function; determining a modified pulse pattern (topt,p,i, ?up,i) by moving the switching transitions of the nominal pulse pattern (tp,i*, ?up,i*) to generate modified switching transitions; and applying at least the next switching transition of the modified pulse pattern (topt,p,i, ?up,i) to the electrical converter system.
    Type: Application
    Filed: September 29, 2020
    Publication date: November 17, 2022
    Inventors: Martinus David Dorfling, Hendrik du Toit Mouton, Tobias Geyer