Static voltage balancer

Details Static voltage balancer Static voltage balancer

1977-05-19

1978-12-26

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

324107, G05F 130

Patent

active

041318447

ABSTRACT:
An in-line voltage balancing circuit sums a trim voltage with each phase voltage of a polyphase generating system to assure that the voltage between each phase and neutral is equal to the average voltage of all the phases. An individual error signal representative of the difference between each phase voltage and the average voltage is provided to individual phase modulator circuits. The phase modulator circuits develop pulse width modulated signals wherein the pulse width is proportional to the amplitude of the error signal. The outputs of the phase modulator circuits are connected to switching amplifiers which provide trim voltages proportional to the phase modulated signals. Summing transformers are employed to sum the individual trim voltage with appropriate phase voltage so that the voltage for each phase equals the average voltage.

REFERENCES:
patent: 2577551 (1951-12-01), White
patent: 2839719 (1958-06-01), Artzt
patent: 3157826 (1964-11-01), Norton
patent: 3160786 (1964-12-01), Faglie
patent: 3176214 (1965-03-01), Johnson
patent: 3596172 (1971-07-01), Harrison

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