System for precise regulation of the output voltage or current o

Details System for precise regulation of the output voltage or current o System for precise regulation of the output voltage or current o

1981-05-14

1982-08-10

Shoop, William M.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 97, H02P 1300

Patent

active

043441254

ABSTRACT:
A system is disclosed for maintaining the precise regulation of the output voltage or current of a push-pull inverter subject to large variations of input voltage as well as output voltage or current, without variable fluctuations which would produce asymmetrical direct currents in the primary of the push-pull inverter transformer. A regulation fluctuation signal is produced from the output voltage or current by comparing the actual nominal value with a desired standard value. The actual value is made constant by varying the switching times of periodically switched transistors, which alternately switch current in the two primary windings of the push-pull inverter transformer. The integrals of the voltage or current wave forms in each conduction period of the transistors are derived from the transistor signal amplitudes during two consecutive periods. Differential signals are formed from the two transistor signal amplitudes, which are superimposed on the regulation fluctuation to thereby decrease the undesired fluctuations.

REFERENCES:
patent: 3657631 (1972-04-01), Martens et al.
patent: 3873903 (1975-03-01), Koetsch et al.
patent: 4150424 (1979-04-01), Nuechterlein
patent: 4162524 (1979-07-01), Jansson

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