Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1990-06-27
1992-03-10
Sterrett, Jeffrey
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 26, 363134, H02M 7519
Patent
active
050954164
ABSTRACT:
Method and apparatus for output current limitation of a push-pull d.c. voltage converter. The input current of the push-pull d.c. voltage converter is detected and integrated each switching cycle of push-pull switches in the current paths leading to the transformer of the converter. The integrated signal together with a reference signal are utilized to form a control signal for a pulse frequency modulator, the output of which controls the on-periods of the push-pull switches. The arithmetic mean of the output current of the push-pull d.c. voltage converter is thereby kept constant without additional power elements. Operation with a boost-type switch controller as a pre-regulator becomes possible without problems.
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"Design of Power Transformers for Space TWTA's"; Tech-Notes, Watkins Johnson Co., Palo Alta, CA., U.S.A.
ANT Nachrichtentechnik GmbH
Sterrett Jeffrey
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