Electric power conversion systems – Current conversion – Using semiconductor-type converter
Reexamination Certificate
2006-01-17
2006-01-17
Nguyen, Matthew V. (Department: 2838)
Electric power conversion systems
Current conversion
Using semiconductor-type converter
Reexamination Certificate
active
06987680
ABSTRACT:
The invention relates to a series chopper comprising: a pair of input terminals A and B for connecting a DC input voltage Vin, a pair P of breakers SB, ST in series connected by the breaker SB to the input terminal B, ST comprising a control input Cm1for setting ST either into an on state or into an isolated state, SB comprising a control input Cm2for setting SB either into an on state or into an isolated state, a pair of output terminals C and D, for supplying, with an output voltage Vout, a load R the output terminal D being connected to the input terminal B and the output terminal C to the point of connection between the two breakers SB and ST in series across an inductor. The series chopper comprises K other additional pairs Piof breakers in series between the input terminal A and the free side of the breaker ST with i=1, 2 . . . K. K input capacitors Cfiin series connected to the K pairs of breakers with i=1, 2 . . . K, . . . , K output capacitors Csiin series, each output capacitor Csibeing connected between the common point of the breakers of the pair Piand the common point of the breakers of the previous pair Pi−1, with i=1, 2, . . . K, (when i=1, Pi−1=P0=P). The breakers of these other K additional pairs are operated simultaneously so as to form, when the breaker SB of the pair P is operated into the on state, a first network of capacitors, and when the breaker ST of the pair P is operated into the on state, a second network of capacitors.
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Patent Abstract of Japan; vol. 016, No. 18 (E-1155); Jan. 17, 1992 & JP 03 235 657 A; Oct. 21, 1991.
Taurand Christophe
Vire Guillaume
Lowe Hauptman & Berner LLP
Nguyen Matthew V.
Thales
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