Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1994-02-09
1995-09-19
Wong, Peter S.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 95, 363 41, H02M 75395
Patent
active
054521980
ABSTRACT:
An apparatus and method for generating a sensing signal from a generally periodic AC signal. The apparatus includes a first integrating circuit (125) for generating a first integrated signal by integrating the AC signal during a time period between positive transitions of the AC signal. The first integrating circuit (125) is reset by pulses from a pulse generator (100) at negative transitions of the AC signal. The apparatus further includes a second integrating circuit (135) for generating a second integrated signal by integrating the AC signal during the time period between positive transitions of the AC signal. The second integrating circuit (135) is reset by a further pulse generator at positive transitions of the AC signal. The sensing signal is generated by taking the difference in magnitude between the first and second integrated output signals.
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Makeever Jeffery J.
Riley Shawn
Sundstrand Corporation
Wong Peter S.
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