Feed forward AC voltage regulator employing step-up, step-down t

Details Feed forward AC voltage regulator employing step-up, step-down t Feed forward AC voltage regulator employing step-up, step-down t

1982-04-12

1984-01-31

Shoop, William M.

Electricity: power supply or regulation systems

Input level responsive

Using a transformer or inductor as the final control device

323259, 323342, 323344, G05F 500

Patent

active

044292694

ABSTRACT:
A feed forward AC voltage regulator utilizes a step-up, step-down transformer to apply adjustment voltages to an unregulated AC line. Analog circuitry periodically samples the unregulated AC line input and compares it with a scaled representation of the desired line voltage. Digital circuitry converts the information from the analog sampling and comparison to an instruction command which activates an appropriate solid state switch associated with a tap on a multitap transformer connected to the regulated AC output line. The taps are successively located on the multitap transformer to provide selectable adjustment voltages of various values. The switched-in adjustment voltage is provided the proper polarity and applied to the primary of the step-up, step-down transformer, thereby applying to the secondary the adjustment voltage needed to move the regulated AC output line to the desired level.

REFERENCES:
patent: 3600668 (1971-08-01), Goldberg
patent: 3621374 (1971-11-01), Kettler
patent: 3690739 (1972-09-01), Prescott
patent: 3732486 (1973-05-01), Schoendube
patent: 4156174 (1979-05-01), Specht

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