Patents by Inventor Roland Sievert

Roland Sievert 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).

  • Patent number: 11081990
    Abstract: A method for operating a steam turbine, wherein the pressure of the cooling medium in the generator is changed not only for cooling but also for increasing or decreasing the torque of the generator on the steam turbine, this being utilized for the purpose of the start-up or shut-down process.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: August 3, 2021
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Matthias Kowalski, Roland Sievert
  • Publication number: 20210028626
    Abstract: A system that is directly coupled to the transmission network or the distribution network, wherein a variable-speed, twin-fed asynchronous machine is combined with a flywheel. Besides the function as a voltage-regulating phase shifter, energy in the flywheel can at the same time be stored or removed as the speed changes. The provided properties relate to a combination of frequency support, voltage stabilisation, energy storage and short-circuit capacity. In a particular embodiment the speed of the flywheel is increased in relation to the speed of the rotor by a transmission, wherein the capability of the flywheel to store energy advantageously rises disproportionally with the speed.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 28, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: Jens Rosendahl, Roland Sievert, Klaus-Dieter Walli
  • Publication number: 20210028730
    Abstract: A method for operating a steam turbine, wherein the pressure of the cooling medium in the generator is changed not only for cooling but also for increasing or decreasing the torque of the generator on the steam turbine, this being utilized for the purpose of the start-up or shut-down process.
    Type: Application
    Filed: August 21, 2018
    Publication date: January 28, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: Matthias KOWALSKI, Roland SIEVERT
  • Patent number: 8776520
    Abstract: A method for operating a steam power station is provided. The steam turbine power station includes at least one steam turbine and a process steam consumer, wherein a steam mass flow is subdivided into a first partial mass flow and a second partial mass. In a first operating state, the first partial mass flow is supplied to the steam turbine and the second partial mass flow is supplied to the process steam consumer. In a second operating state, at least part of the second partial mass flow is supplied to the steam turbine at least after the first turbine stages. A steam power station is also provided.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: July 15, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Beul, Stefan Glos, Matthias Heue, Thomas Hofbauer, Ralf Hoffacker, Nils Lückemeyer, Norbert Pieper, Roland Sievert
  • Publication number: 20110100008
    Abstract: A method for operating a steam power station is provided. The steam turbine power station includes at least one steam turbine and a process steam consumer, wherein a steam mass flow is subdivided into a first partial mass flow and a second partial mass. In a first operating state, the first partial mass flow is supplied to the steam turbine and the second partial mass flow is supplied to the process steam consumer. In a second operating state, at least part of the second partial mass flow is supplied to the steam turbine at least after the first turbine stages. A steam power station is also provided.
    Type: Application
    Filed: May 4, 2009
    Publication date: May 5, 2011
    Inventors: Ulrich Beul, Stefan Glos, Matthias Heue, Thomas Hofbauer, Ralf Hoffacker, Nils Lückemeyer, Norbert Pieper, Roland Sievert