Voltage compensation system

Electricity: power supply or regulation systems – Output level responsive – Using a transformer or inductor as the final control device

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323245, 336147, G05F 124

Patent

active

058835032

ABSTRACT:
A voltage compensation system for an A.C. power line supplying one or more air conditioners, a telephone system or other telecommunication system, a battery charger, or some other utilization system that should have an input voltage within a given normal range. The voltage compensation system includes a transformer unit containing a transformer having at least two windings coupled electromagnetically by a transformer core; one of those windings preferably is in two segments that are connectable in series or in parallel. One winding is connected to an input terminal and to an output terminal. The other winding adds to the A.C. line voltage when the line voltage drops below a low voltage threshold and/or subtracts from the line voltage when the A.C. line voltage exceeds a high voltage threshold. If the A.C. line voltage is in the range required by the utilization system, the other transformer winding is effectively shorted out or otherwise disconnected. In automated versions, a line voltage sensor actuates a switching circuit to effect the desired compensation action. The voltage compensation system may handle under-voltage conditions, over-voltage conditions, or both. For chronic under-voltage or over-voltage conditions, direct winding connections may be employed instead of relays.

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