Patents by Inventor Cornilleau Hubert

Cornilleau Hubert 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).

  • Pulse width modulation converter
    Patent number: 4884185
    Abstract: Converter, particularly frequency-converter, with pulse width modulation. The losses of the converter are reduced by providing in one of the leads (17, 18) connecting the direct voltage source (12) to the inverter (15) an inductance (L) as an aid to the conduction of all static switches (T1-T6); in parallel to the arms (B1-B3) of the inverter, a transfer capacitor (C.sub.L) in series with a transfer diode (D.sub.L) to receive the inductance energy during the blocking of the static switches; a resistance (R.sub.L) for the discharge of the transfer capacitor, connected to the lead (17, 18) connecting the direct voltage source (12) to the inverter (15).
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: November 28, 1989
    Assignee: La Telemecanique Electrique
    Inventor: Cornilleau Hubert