Patents by Inventor Nuno Miguel da Silva Cerqueira

Nuno Miguel da Silva Cerqueira 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).

  • Rotor for a synchronous machine
    Patent number: 10862374
    Abstract: A rotor for a synchronous machine of a motor vehicle includes an excitation coil configured to generate a magnetic field necessary for rotation of the rotor in a stator of the synchronous machine. The rotor also includes a supply circuit, to which energy is fed contactlessly such that the supply circuit supplies the excitation coil with the energy. The rotor also includes a demagnetization circuit configured to demagnetize the excitation coil, which, upon collapse of the energy supply of the excitation coil, diverts a current flowing through the excitation coil into a circuit branch in which at least one component for demagnetization is arranged, wherein the at least one component is also configured to perform a protection function to protect the supply circuit against an induced voltage generated at the excitation coil.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 8, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Christoph Sudan, Berthold Schinnerl, Nuno Miguel da Silva Cerqueira, Falko Friese, Daniel Ruppert
  • Rotor for a Synchronous Machine
    Publication number: 20170070126
    Abstract: A rotor for a synchronous machine of a motor vehicle includes an excitation coil configured to generate a magnetic field necessary for rotation of the rotor in a stator of the synchronous machine. The rotor also includes a supply circuit, to which energy is fed contactlessly such that the supply circuit supplies the excitation coil with the energy. The rotor also includes a demagnetization circuit configured to demagnetize the excitation coil, which, upon collapse of the energy supply of the excitation coil, diverts a current flowing through the excitation coil into a circuit branch in which at least one component for demagnetization is arranged, wherein the at least one component is also configured to perform a protection function to protect the supply circuit against an induced voltage generated at the excitation coil.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Inventors: Christoph Sudan, Berthold Schinnerl, Nuno Miguel da Silva Cerqueira, Falko Friese, Daniel Ruppert