Patents Assigned to Solar Refining, Inc.
  • Patent number: 4716515
    Abstract: A switched capacitor, induction motor drive circuit is provided wherein a switched capacitor in parallel with the inductive motor load at each output terminal is provided for commutation or switching of the main output inverter elements thereby protecting the switching elements from excessive voltage during switching or commutation operation in combination with a unique switching control circuit which enables minimal voltage switching elements to be used and which eliminates the need for anti-parallel rectifiers in the inverter output stage. Alternate forms of the switching control circuit are disclosed. Regeneration induced power control circuits for dissipating or returning the power to the input lines are disclosed.
    Type: Grant
    Filed: June 18, 1986
    Date of Patent: December 29, 1987
    Assignee: Solar Refining, Inc.
    Inventor: William C. Alexander
  • Patent number: 4597039
    Abstract: A switched capacitor, induction motor drive circuit is provided wherein a switched capacitor in parallel with the inductive motor load at each output terminal is provided for commutation or switching of the main output inverter elements thereby protecting the switching elements from excessive voltage during switching or commutation operation in combination with a unique switching control circuit which enables minimal voltage switching elements to be used and which eliminates the need for anti-parallel rectifiers in the inverter output stage.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: June 24, 1986
    Assignee: Solar Refining, Inc.
    Inventor: William C. Alexander