Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1997-03-12
1998-08-18
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
327441, H02M 7122
Patent
active
057965994
ABSTRACT:
A method and/or apparatus used with a thyristor based AC-AC motor controller in a discontinuous current mode for providing power to thyristor gate drivers. The apparatus includes a snubber network and two rechargeable capacitors for storing input line voltage to an inversely connected pair of thyristors when both the thyristors are off. Stored voltage is provided via a power lead to each thyristor driver to provide power thereto and thus the circuit operates in a self-powered manner.
REFERENCES:
patent: 4475139 (1984-10-01), Chadwick
patent: 4634891 (1987-01-01), Yamagami
patent: 4697219 (1987-09-01), Mitsuoka
patent: 5298848 (1994-03-01), Ueda et al.
MacLennan David S.
Raonic Dusan
Rouaud Didier G.
Horn John J.
Jaskolski Michael A.
Miller John M.
Nguyen Matthew V.
Reliance Electric Industrial Company
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