Patents by Inventor Gerhard MAYRHOFER-HUBER

Gerhard MAYRHOFER-HUBER 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).

  • Temperature of a link capacitor
    Patent number: 10416028
    Abstract: To determine the temperature of a link capacitor (C) of a link converter (1) more accurately with less expenditure, a device and a method are described, in which the link capacitor (C) is modeled as a series interconnection of an equivalent capacitance (CS) and an equivalent series resistance (ESR), wherein a modeled capacitor current (iCm) flows across the equivalent series resistance (ESR). A modeled capacitor power loss (PC), from which the capacitor temperature (TC) is determined by means of a specified temperature model, is calculated from the modeled capacitor current (iCm) and the value of the equivalent series resistance (ESR) by means of a first relationship of the form PC=f(iCm, ESR). Direct measurement of the capacitor temperature (TC), of the capacitor current (iC), or of the capacitor power loss (PC) is not required. For example, a measurement of the capacitor voltage (uC) and a further calculation of the modeled capacitor current iCm and finally of the capacitor power loss (PC) are sufficient.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: September 17, 2019
    Assignee: B&R INDUSTRIAL AUTOMATION GMBH
    Inventors: Klaus Doppelhammer, Johann Eder, Gerhard Mayrhofer-Huber
  • TEMPERATURE OF A LINK CAPACITOR
    Publication number: 20170219441
    Abstract: To determine the temperature of a link capacitor (C) of a link converter (1) more accurately with less expenditure, a device and a method are described, in which the link capacitor (C) is modeled as a series interconnection of an equivalent capacitance (CS) and an equivalent series resistance (ESR), wherein a modeled capacitor current (iCm) flows across the equivalent series resistance (ESR). A modeled capacitor power loss (PC), from which the capacitor temperature (TC) is determined by means of a specified temperature model, is calculated from the modeled capacitor current (iCm,) and the value of the equivalent series resistance (ESR) by means of a first relationship of the form PC=f (iCm, ESR). Direct measurement of the capacitor temperature (TC), of the capacitor current (iC), or of the capacitor power loss (PC) is not required. For example, a measurement of the capacitor voltage (uC) and a further calculation of the modeled capacitor current iCm and finally of the capacitor power loss (PC) are sufficient.
    Type: Application
    Filed: January 27, 2017
    Publication date: August 3, 2017
    Applicant: BERNECKER + RAINER INDUSTRIE-ELEKTRONIK Ges.m.b.H.
    Inventors: Klaus DOPPELHAMMER, Johann EDER, Gerhard MAYRHOFER-HUBER