Patents by Inventor Alfredo Rodolfo Muñoz-Garcia

Alfredo Rodolfo Muñoz-Garcia 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: 6242884
    Abstract: A dual stator winding induction machine has two windings with input terminals which are supplied separately with drive power. The two stator windings have a different number of poles to essentially eliminate the magnetic coupling between the two windings and to decouple the torques produced by each set of windings. Power is supplied to the two windings by two separate variable frequency inverter drives to provide two independently controllably torque components. At low speed, the power supplied to one of the windings can produce torque which opposes the torque from the power applied to the other winding, so that very low speed and standstill operation can be achieved while the frequency of the power supplied by the inverters is always greater than the minimum frequency. At higher operating speeds, power is supplied to the two windings so that the torque from the windings adds. The dual stator machine can be built with minimal modifications to standard winding configurations.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: June 5, 2001
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Thomas A. Lipo, Alfredo Rodolfo Muñoz-Garcia