Patents by Inventor Hans Peter Nee

Hans Peter Nee 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).

  • Converter valve
    Patent number: 9368960
    Abstract: A converter valve unit including a plurality of parallel connected controllable semiconducting elements. A free-wheeling diode is connected in anti-parallel with each semiconducting element. A control unit is configured to control each semiconducting element. A current sensor is connected to each of the parallel connected semiconducting elements. The current sensor is configured to sense a current of each semiconducting element by measuring a voltage over the current sensor. A differentiator is configured to compare the currents of the semiconducting elements by comparing the voltages. Upon detecting an unbalance in the currents the differentiator sends a turn-on signal to all control units to control all the semiconducting elements of the valve unit into a conducting stage.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: June 14, 2016
    Assignee: ABB RESEARCH LTD.
    Inventor: Hans Peter Nee
  • CONVERTER VALVE
    Publication number: 20140313796
    Abstract: A converter valve unit including a plurality of parallel connected controllable semiconducting elements. A free-wheeling diode is connected in anti-parallel with each semiconducting element. A control unit is configured to control each semiconducting element. A current sensor is connected to each of the parallel connected semiconducting elements. The current sensor is configured to sense a current of each semiconducting element by measuring a voltage over the current sensor. A differentiator is configured to compare the currents of the semiconducting elements by comparing the voltages. Upon detecting an unbalance in the currents the differentiator sends a turn-on signal to all control units to control all the semiconducting elements of the valve unit into a conducting stage.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 23, 2014
    Applicant: ABB RESEARCH LTD.
    Inventor: Hans Peter NEE
  • Converter valve
    Patent number: 8755206
    Abstract: A converter valve unit including a plurality of parallel connected semiconducting elements, a free-wheeling diode and a control unit.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: June 17, 2014
    Assignee: ABB Research Ltd.
    Inventor: Hans Peter Nee
  • Converter Valve
    Publication number: 20110103108
    Abstract: A converter valve unit including a plurality of parallel connected semiconducting elements, a free-wheeling diode and a control unit.
    Type: Application
    Filed: March 31, 2005
    Publication date: May 5, 2011
    Applicant: ABB Research Ltd.
    Inventor: Hans Peter Nee