Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1978-04-04
1979-04-17
Shoop, William M.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 56, 363134, 363 97, H02M 3335, H02M 7537
Patent
active
041504240
ABSTRACT:
A current balance arrangement for the power switching devices of a push-pull converter circuit is disclosed. A dynamic dead band circuit is incorporated into a pulse width modulation current balance and output voltage regulation control circuit to prevent current imbalance from causing saturation of the power transformer core for all operating conditions of the converter including input voltage falling below its rated low-line value, sudden load surges, or turning off of the converter power supply. Whenever the dynamic dead band circuit determines that inverter current flow is being terminated by the dead band interval of the converter clock, a control signal is sent to the pulse width modulation circuitry of the converter to effect inverter current termination prior to initiation of the clock dead band interval in subsequent cycles of converter operation. The invention eliminates the need for providing inverter power switching devices having closely matched electrical characteristics.
REFERENCES:
patent: 3670234 (1972-06-01), Joyce
patent: 3859583 (1975-01-01), Reed
patent: 3859586 (1975-01-01), Wadlington
patent: 3869566 (1975-03-01), Smith
patent: 3873903 (1975-03-01), Koetsch et al.
patent: 4002963 (1977-01-01), Hunter
International Telephone and Telegraph Corporation
Lenkszus Donald J.
Raden James B.
Shoop William M.
Wong Peter S.
LandOfFree
Dynamic current balancing for power converters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamic current balancing for power converters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic current balancing for power converters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1265077