Circuit and method for paralleling AC electrical power systems

Details Circuit and method for paralleling AC electrical power systems Circuit and method for paralleling AC electrical power systems

1987-07-31

1988-06-28

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

307 64, 307 66, 307 85, H02J 110

Patent

active

047541610

ABSTRACT:
A control circuit for controlling the operation of a parallel source electrical power system produces a pair of load current signals representative of the load current delivered by corresponding phases of individual channels of the power system. At least one of the load current signals is scaled by a scaling factor to obtain a scaled load current signal that is combined with the load current signal for the other channel to obtain a feedback signal. The feedback signal is used to control the output of one of the paralleled power sources such that the ratio of load currents delivered by the power sources is proportional to the scaling factor.

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