Regulator-compensator control
AssigneeEsco Manufacturing Company
InventorsJames E. McClain, Howard L. Scott
Life of this patent
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Abstract
Disclosed is a voltage regulation-unbalanced voltage compensation control connected intermediate the supply and load of the polyphase system, the control including separately adjustable variable impedance elements provided by saturable core reactors for independently varying the voltage drops between the supply and load terminals for each phase. The independent adjustment of the variable impedance elements is effected by a feedback control network varying the magnitude of current supplied to the DC control winding of each saturable core reactor in response to the existing load voltages across the load terminals.
Claims5
In a system for supplying power to a load from a polyphase source, the improvement comprising a regulator-compensator control interconnected between the source input terminals and the load input terminals, said regulator-compensator control comprising:
- means for independently sensing the respective voltages across the load input terminals;
- a feedback control network coupled to said voltage sensing means for generating a separate and independent control signal in response to each sensed terminal voltage;
- and
- a control signal responsive, variable impedance element connected in series circuit relation between said source input terminals and said load input terminals, each variable impedance element being connected to said feedback control network to receive the corresponding independent control signal, with the impedance of each variable impedance element changing in response to a change in the associated control signal to selectively alter the voltage drops in each of the supply lines.
Dependencies are inferred from the claim text.