Circuit and method for synchronizing power sources in a parallel

Details Circuit and method for synchronizing power sources in a parallel Circuit and method for synchronizing power sources in a parallel

1987-07-31

1988-08-23

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

307 64, 307 66, 307 57, 363 95, 363165, H02V 316

Patent

active

047663278

ABSTRACT:
Power sources of a parallel AC electrical power system are synchronized by producing a voltage difference signal representative of the difference in output voltages of the power sources and demodulating that signal to produce a frequency control signal and a voltage magnitude control signal. The output frequency and voltage magnitude of at least one of the power sources is varied in response to the frequency control signal and voltage magnitude control signals, respectively, to minimize the difference in output voltages between the power sources.

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