Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1978-09-05
1980-07-29
Shoop, William M.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
318722, 318811, H02M 7515
Patent
active
042153930
ABSTRACT:
An apparatus for numerical control of a thyristor inverter comprises a decoder connected to a clock counter and a bidirectional counter, a control unit and a switching unit having seven AND gates, a NOT gate, a sign flip-flop, and a delay circuit. The clock counter is coupled to the first inputs of the first and second AND gates, the output of the first AND gate is coupled to the gate electrodes of the main and recharging thyristors of the thyristor inverter, and the outputs of the second and third gates are AND coupled to the gate electrode of the dropping thyristor. The first output of the decoder is coupled to the first inputs of the third and fourth AND gates, the output of an additional AND gate being coupled to the gate electrode of an additional thyristor and, via the delay circuit, to the gate electrode of the recharging thyristor. The control unit is coupled to the first inputs of the fifth, sixth and seventh AND gates. The second output of the decoder is coupled to the second input of the seventh AND gate and, via the NOT gate, to the second input of the sixth AND gate; and the second input of the fifth AND gate is coupled to the third output of the decoder. The outputs of the fifth, sixth and seventh and gates are coupled to the inputs of the sign flip-flop. The outputs of the sign flip-flop are respectively coupled to the second inputs of the second and fourth and first and third AND gates.
REFERENCES:
patent: 3777237 (1973-12-01), Anderson
patent: 4093980 (1978-06-01), Gurwicz
LandOfFree
Apparatus for numerical control of thyristor inverter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for numerical control of thyristor inverter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for numerical control of thyristor inverter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-907387