Three phase power circuit

Details Three phase power circuit Three phase power circuit

1975-05-01

1976-11-23

Goldberg, Gerald

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307 83, 321 27R, 321 57, H02M 744

Patent

active

039939430

ABSTRACT:
A power circuit including an x and y inverter, an x and y constant voltage transformer, and a filtered d.c. input operable to provide a three phase sine wave output. The three phase outputs from the two transformers are a result of interconnections of the secondary windings of the transformer - in essence connecting the conventional two phase to three phase connections. The circuit is operable to provide a constant three phase output when a balanced load is applied. With an unbalanced load the phase of the output voltages of the two transformers are corrected relative to each other. A feedback circuit that includes an oscillator continuously samples the phase of the output voltage of each of the two transformers and adjusts the phase of one transformer output to that of the other.

REFERENCES:
patent: 3469169 (1969-09-01), Schlabach et al.
patent: 3477010 (1969-11-01), Ve Nard
patent: 3775662 (1973-11-01), Compoly et al.

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