Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1983-12-22
1987-03-31
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
361 93, 363 56, 378110, H02H 7122
Patent
active
046547703
ABSTRACT:
Current limit protection is provided to ensure that the current flow within the transistor inverter does not exceed a predetermined safe level to thereby cause damage to the various components such as the transistor inverters. The current in the primary of the transformer is sensed and a representative signal is compared with a reference signal to provide a digital output indicating whether a safe limit has been exceeded. A logic network then operates on the output signal to shut down or reduce the system operation accordingly. In the event of a shut-down, current decay is accommodated by shutting off only the top transistors in the inverter diagonals so as to thereby allow the remaining current to flow in the bottom transistors and diodes.
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Walter Weigl, "A New High-Frequency Controlled X-Ray Generator System with Multi-Pulse Wave Shape", Jun. 1983, pp. 7-19 in The Journal for Radiological Engineering, vol. 1, No. 1, Jun. 1983.
Carmena Angel D.
Santurtun Carlos M.
Beha Jr. William H.
General Electric Company
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