Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1994-10-05
1996-02-06
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
379418, H02M 3335, H02M 300
Patent
active
054900549
ABSTRACT:
A ringing generator and a method for converting a DC input voltage signal from a DC source to an AC output voltage and supplying this output voltage to a variable load, The output signal has a continuously adjustable amplitude so as to continuously adapt to the current demanded by the load, A power supply converts the DC input voltage to variable DC supply voltages. A linear amplifier then converts these variable supply voltages to an AC output voltage using a precision sine wave oscillator as a reference. A load current sensor senses and measures the output current being supplied to the load and then a control circuit is employed to automatically and continuously adjust the amplitude of the output voltage to maintain the maximum output current that can be safely supplied to the load by the linear amplifier. An output voltage sensor senses and measures the output voltage being supplied to the load and then a control circuit is employed to automatically and continuously adjusts the amplitude of the variable DC supply voltages based upon the output voltage so as to guarantee that at any instant in time the variable DC supply voltages are slightly greater in magnitude than the output voltage at the same instant in time. The ringing generator also includes a fault monitor for continually monitoring multiple critical locations in the ringing generator for any anomaly that would affect the output voltage of the unit and thereby degrade the performance of the ringing generator. Ringing generators may be connected in parallel for increased capacity without any additional external equipment.
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Ferro Magnetics Corporation
Nguyen Matthew V.
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