Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1976-09-20
1977-08-09
Shoop, William M.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363136, H02M 118
Patent
active
040413659
ABSTRACT:
A circuit for detecting a malfunction in an inverter. The circuit includes means coupled to the center tap of a commutating interval current limiting reactor which is connected in series with and interposed between a pair of gate controlled rectifiers for generating a first signal upon detecting and for the duration of an interval when both of the rectifiers are ON. The circuit further provides means, responsive to a first pulse used to initiate an interval when either of the pair of rectifiers is to be "ON", for generating a second signal having a duration greater than the normal duration of the first signal. Also provided is a means responsive to the first and second signals for generating a control signal to cause cessation of the operation of the inverter, if the second signal is absent during the occurrence of the first signal.
REFERENCES:
patent: 3418556 (1968-12-01), Greenberg et al.
patent: 3423665 (1969-01-01), Greenberg et al.
patent: 3718853 (1973-02-01), Graf
patent: 3760258 (1973-09-01), Percorini et al.
patent: 3821630 (1974-06-01), Kornrumpf et al.
patent: 3824441 (1974-07-01), Heyman et al.
patent: 3846694 (1974-11-01), Archer
patent: 3919620 (1975-11-01), McMurray et al.
Anderson Thomas E.
Peak Steven C.
Bernkopf Walter C.
Cahill Robert A.
General Electric Company
Shoop William M.
Young Stephen A.
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