Patents by Inventor Grigory Bentsionovich Lazarev

Grigory Bentsionovich Lazarev 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).

  • Apparatus for protecting the thyristors of a high-voltage controlled converter from overvoltage
    Patent number: 3943427
    Abstract: An apparatus for protecting the thyristors of a high-voltage controlled converter against overvoltage, said thyristors being connected to form a chain of successively connected thyristor modules, each of which comprises at least one thyristor. The protecting apparatus consists of an additional circuit comprising at least one link formed by two avalanche diodes connected in series opposition, said circuit being connected parallel to the chain of thyristor modules. The additional circuit serves to limit the magnitude of the voltage applied to the thyristor modules. The protecting apparatus further includes a surge arrester controlled by signals from a current sensor whose input is connected in said additional circuit. In accordance with signals from the current sensor, the controlled surge arrester limits the voltage across the additional circuit in case of overvoltage.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: March 9, 1976
    Inventors: Jury Georgievich Tolstov, Vladimir Efremovich Skorovarov, Boris Ilich Grinshtein, Valentina Gavrilovna Stepanova, Ivan Pavlovich Bashkatov, Jury Danilovich Vinitsky, Valery Ottovich Balyasinsky, Valery Pavlovich Zhmurov, Alexandr Venediktovich Natalkin, Grigory Bentsionovich Lazarev