Patents by Inventor Olivier Parrot

Olivier Parrot 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).

  • Uninterruptible power supply with passing neutral, comprising a twin step-up chopper
    Patent number: 5654591
    Abstract: An uninterruptible power supply, with passing neutral, comprises a twin step-up chopper whose input is connected to a battery and to a rectifier circuit connected to the mains power system. The twin step-up chopper comprises a positive step-up chopper supplying a first output voltage between a positive DC output and neutral, and a negative step-up chopper supplying a second output voltage between a negative DC output and neutral. The control circuit of the twin step-up chopper comprises means for regulating imbalance between the output voltages of the positive and negative step-up choppers, suitable both for operation on the mains power system and for operation on the battery.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: August 5, 1997
    Assignee: Schneider Electric SA
    Inventors: Henri Mabboux, Olivier Parrot