Patents by Inventor Matthias STAEHLI

Matthias STAEHLI 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).

  • Duty-ratio controller
    Patent number: 10020724
    Abstract: A controller for determining the duty-ratio for a pulse width modulator of a converter includes an inner current loop, an outer voltage loop and a multiplier with an input voltage feed forward to connect both loops. A prediction unit determines a correction signal icor that is added to the reference current iref by means of an adder and it further determines a sample correction signal to correct the current samples in the current loop. This error-controlled duty-ratio prediction with sample correction results in an improved total harmonic distortion as well as in an improved power factor of the converter.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: July 10, 2018
    Assignee: DET INTERNATIONAL HOLDING LIMITED
    Inventors: Daniel Weida, Matthias Staehli
  • DUTY-RATIO CONTROLLER
    Publication number: 20150263609
    Abstract: A controller for determining the duty-ratio for a pulse width modulator of a converter includes an inner current loop, an outer voltage loop and a multiplier with an input voltage feed forward to connect both loops. A prediction unit determines a correction signal icor that is added to the reference current iref by means of an adder and it further determines a sample correction signal to correct the current samples in the current loop. This error-controlled duty-ratio prediction with sample correction results in an improved total harmonic distortion as well as in an improved power factor of the converter.
    Type: Application
    Filed: March 11, 2015
    Publication date: September 17, 2015
    Applicant: DET International Holding Limited
    Inventors: Daniel WEIDA, Matthias STAEHLI