Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1988-03-14
1989-02-14
Salce, Patrick R.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
363 37, H02M 7155
Patent
active
048050822
ABSTRACT:
In a voltage-source inverter system, wherein the commutation between static switches in the AC/DC converter in the regenerative mode is forced by a GTO or transistor device in series with an auxiliary thyristor in order to bring the current path to zero, a reactor of large inductance is inserted for improved operation in the forward and regenerative mode, but an additional thyristor is converted in unparallel to such reactor in order to neutralize the inductance when bringing the current to zero in the regenerative mode, and such additional thyristor is turned OFF by natural commutation when the next converter static switch is coming ON.
REFERENCES:
patent: 4019116 (1977-04-01), Klautschek
patent: 4086621 (1978-04-01), Vukasovic
patent: 4376296 (1983-03-01), Bhagwat et al.
patent: 4697131 (1987-09-01), Schauder et al.
Heinrich Theodore M.
Schauder Colin D.
Lorin C. N.
Salce Patrick R.
Starrett Jeffrey
Westinghouse Electric Corp.
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