Electric power conversion systems – Frequency conversion without intermediate conversion to d.c. – By semiconductor converter
Patent
1987-11-03
1989-04-04
Shoop, Jr., William M.
Electric power conversion systems
Frequency conversion without intermediate conversion to d.c.
By semiconductor converter
363159, H02M 5257
Patent
active
048191485
ABSTRACT:
The present invention provides a digital gate pulse generator which controls the output of a cycloconverter used for electrical power conversion applications by determining the timing and delivery of the firing pulses to the switching devices in the cycloconverter. Previous gate pulse generators have been built with largely analog or discrete digital circuitry which require many precision components and periodic adjustment. The gate pulse generator of the present invention utilizes digital techniques and a predetermined series of values to develop the necessary timing signals for firing the switching device. Each timing signal is compared with a reference signal to determine the exact firing time. The present invention is significantly more compact than previous gate pulse generators, responds quickly to changes in the output demand and requires only one precision component and no adjustments.
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Klein Frederick F.
Mutone Gioacchino A.
Hoff Marc S.
Shoop Jr. William M.
The United States of America as represented by the United States
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