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Battery-charger

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Battery charger

Details

Inventors: Fallon, William H.; Schober, William R.;
Assignee: General Battery Corporation (Reading, PA)
Primary Examiner: Hickey; Robert J.
Assistant Examiner:
Attorney, Agent or Firm: Benasutti Associates, Ltd.

In a battery charging circuit for charging a battery load characterized by having a substantial effective capacitance, a transformer is connected in a Scott T configuration, the transformer input being adapted for connection to a three phase power line, and the transformer output circuit being in a four phase star configuration for providing a four phase charging circuit. The transformer additionally contains a pair of ferroresonant circuits, each such circuit containing a capacitance selected to cooperate with the capacitance of the battery so as to provide the desired charging characteristic.

DETAILED DESCRIPTION It is an object of this invention to provide a battery charger of simplified construction compared to the prior art, which is relatively inexpensive, and reliable, and which provides a charging characteristic which is stable within predetermined limits for the entire range of battery loads for which it is used.
In accordance with the above objective, there is provided a battery charging circuit adapted for connection to a three phase line, and for use with a battery load having a substantial effective capacitance, having a transformer connected in a Scott T configuration with a pair of ferroresonant circuits each in magnetic association with an output winding, and each such ferroresonant circuit comprising a capacitance selected to cooperate with the effective capacitance of the battery load.
The output of the transformer is connected in a four phase star configuration to the battery.

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