Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Reexamination Certificate
2011-03-22
2011-03-22
Behm, Harry (Department: 2838)
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
C700S031000, C219S663000
Reexamination Certificate
active
07911816
ABSTRACT:
A method and apparatus is featured for providing linear control of a regulated electrical property (e.g., current or voltage) in a switch mode power supply of a thermal processing system that includes an inductive element and at least one switching element. The method and apparatus feature structure, or steps, for generating a nonlinear model that predict values for a regulated electrical property of the inductive element based on a given duty cycle of the at least one switching element and structure, or steps, for generating a nonlinear model that determines a duty cycle for the at least one switching element based on the nonlinear predictive model for the regulated electrical property, the nonlinear model determining the duty cycle such that a linear relationship results between the regulated electrical property and a selected value. A method and apparatus is also featured for providing cross regulation between pre-regulator and post-regulator power stages of a switch mode power supply of a thermal processing system.
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Behm Harry
Hypertherm, Inc.
Proskauer Rose LLP
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