Current sensing regulator
First Claim
1. In an apparatus for the control of an operating parameter of an installation, said parameter being related to an electric current feeding a regulation unit including a regulating switch arranged for being switched between a first non-conducting logic state and a second conducting logic state in response to a drive signal, an electric controller operating in conductance control mode, comprising:
- current reference signal generator means connected to be responsive to a command signal for generating a current reference signal the amplitude of which is a function of said command signal, said current reference signal having a upper control lever and a lower control level;
current sensor means connected to sense said electric current and to generate a sensing signal representing said current;
comparator means connected to compare said current sensing signal to said current reference signal for producing said drive signal for the regulating switch, said comparator means being further connected to a synchronization source for accepting synchronization pulses to switch said drive signal having a first state when the increasing sensing signal is equal to or greater than the lower control level of the current reference signal and having a second state when the decreasing current sensing signal is equal to or lower than the upper control level of the current reference signal.
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Accused Products
Abstract
A current sensing regulator operates in a switching mode of regulation between two sensed current levels in a free-running operation, or between one of the current levels and an intermediate level in a fixed-frequency synchronization operation. The sensed current levels at which switching occurs are set through a command signal, and a comparator controls switching at the set current levels or at the occurrence of synchronization pulses.
47 Citations
6 Claims
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1. In an apparatus for the control of an operating parameter of an installation, said parameter being related to an electric current feeding a regulation unit including a regulating switch arranged for being switched between a first non-conducting logic state and a second conducting logic state in response to a drive signal, an electric controller operating in conductance control mode, comprising:
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current reference signal generator means connected to be responsive to a command signal for generating a current reference signal the amplitude of which is a function of said command signal, said current reference signal having a upper control lever and a lower control level; current sensor means connected to sense said electric current and to generate a sensing signal representing said current; comparator means connected to compare said current sensing signal to said current reference signal for producing said drive signal for the regulating switch, said comparator means being further connected to a synchronization source for accepting synchronization pulses to switch said drive signal having a first state when the increasing sensing signal is equal to or greater than the lower control level of the current reference signal and having a second state when the decreasing current sensing signal is equal to or lower than the upper control level of the current reference signal. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification