Isolated power converter for a thermal system
AssigneeWatlow Electric Manufacturing Company
InventorsKeith NESS, Geoffrey ROZEK, Stanton H. BREITLOW, James HENTGES, John LEMKE, William BOHLINGER, Matthew YENDER
Life of this patent
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Abstract
A power converter system provides adjustable power to a heater and includes an input rectifier and a full-bridge isolating converter. The input rectifier is configured to rectify a line power having a line energy. The full-bridge isolating converter configured to generate an isolated output voltage based on the rectified line power. The isolated output voltage is electrically isolated from the line energy.
Claims20
A power converter system for providing adjustable power to a heater, the power converter system comprising:
- an input rectifier configured to rectify a line power having a line energy;
- and
- a full-bridge isolating converter configured to generate an isolated output voltage based on the rectified line power, wherein the isolated output voltage is electrically isolated from the line energy.
A method of converting power to operate a load being supplied by line power having a line energy comprising:
- rectifying the line power;
- and
- switchably driving a transformer with the rectified line power to generate an adjustable electrically isolated full-wave voltage;
- and
- rectifying the electrically isolated full-wave voltage to obtain an isolated output voltage that is indicative of a desired output voltage applied to the load, wherein current is drawn from the line power in phase with the isolated output voltage.
A power converter system for providing a desired output voltage to a heater, the power converter system comprising:
- an input rectifier configured to rectify a line power having a line energy;
- a transformer configured to generate an isolated full-wave voltage;
- a full-bridge rectifier electrically coupled to the transformer and operable to drive the transformer to generate the isolated full-wave voltage based on the rectified line power;
- an output rectifier configured to rectify the isolated full-wave voltage to generate an isolated output voltage indicative of the desired output voltage;
- a bridge sensor configured to measure a bridge current flowing through the transformer;
- and
- a power controller configured to operate the full-bridge rectifier to drive the transformer.
Dependencies are inferred from the claim text.