Patents by Inventor Per Maersk Jørgensen

Per Maersk Jørgensen 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).

  • Method for reducing regenerated energy and reversal stress in a reciprocating load powered by an electric motor by modulating motor speed using a variable frequency drive and variable frequency drive provided for performing the method
    Patent number: 11863113
    Abstract: The present disclosure refers to a method for controlling the speed of a reciprocating load motor, wherein the motor speed is a function of two input variables, namely a user defined speed set-point and a load dependent input variable. According to the disclosure, the load dependent input variable is a function of the motor current. The disclosure also refers to a variable frequency drive for controlling the speed of a reciprocating load motor, wherein the drive is programmed to perform the presently described method.
    Type: Grant
    Filed: July 9, 2022
    Date of Patent: January 2, 2024
    Assignee: DANFOSS POWER ELECTRONICS A/S
    Inventors: Steve Michael Meyer, Per Maersk Jørgensen
  • METHOD FOR REDUCING REGENERATED ENERGY AND REVERSAL STRESS IN A RECIPROCATING LOAD POWERED BY AN ELECTRIC MOTOR BY MODULATING MOTOR SPEED USING A VARIABLE FREQUENCY DRIVE AND VARIABLE FREQUENCY DRIVE PROVIDED FOR PERFORMING THE METHOD
    Publication number: 20230018979
    Abstract: The present disclosure refers to a method for controlling the speed of a reciprocating load motor, wherein the motor speed is a function of two input variables, namely a user defined speed set-point and a load dependent input variable. According to the disclosure, the load dependent input variable is a function of the motor current. The disclosure also refers to a variable frequency drive for controlling the speed of a reciprocating load motor, wherein the drive is programmed to perform the presently described method.
    Type: Application
    Filed: July 9, 2022
    Publication date: January 19, 2023
    Inventors: Steve Michael Meyer, Per Maersk Jørgensen
  • Pulse shift protection method for detecting a phase-to-phase short circuit in a drive and a drive for executing the method
    Patent number: 11558001
    Abstract: The present invention is directed at a pulse shift protection method for detecting a phase-to-phase short circuit in a drive for controlling electric motors, wherein the drive provides an output voltage to the electric motor, and wherein the instant, at which a short circuit detection function is executed, is chosen to minimize disturbance in the output voltage of the drive. The invention is also directed at a drive for controlling electric motors, said drive including a controlling portion for generating an output signal and an output portion connectable to an electric motor. The drive is provided for executing the above-mentioned pulse shift protection method.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: January 17, 2023
    Assignee: Danfoss Power Electronics A/S
    Inventors: Henrik Rosendal Andersen, Hernan Andres Miranda Delpino, Per Mærsk Jørgensen
  • PULSE SHIFT PROTECTION METHOD FOR DETECTING A PHASE-TO-PHASE SHORT CIRCUIT IN A DRIVE AND A DRIVE FOR EXECUTING THE METHOD
    Publication number: 20220182005
    Abstract: The present invention is directed at a pulse shift protection method for detecting a phase-to-phase short circuit in a drive for controlling electric motors, wherein the drive provides an output voltage to the electric motor, and wherein the instant, at which a short circuit detection function is executed, is chosen to minimize disturbance in the output voltage of the drive. The invention is also directed at a drive for controlling electric motors, said drive including a controlling portion for generating an output signal and an output portion connectable to an electric motor. The drive is provided for executing the above-mentioned pulse shift protection method.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 9, 2022
    Inventors: Henrik Rosendal Andersen, Hernan Andres Miranda Delpino, Per Mærsk Jørgensen