Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate
2008-03-07
2010-06-01
Vu, Bao Q (Department: 2838)
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
C363S040000, C323S282000, C323S284000
Reexamination Certificate
active
07729140
ABSTRACT:
A sampling method with adjusting duty ratios is provided and includes the following steps. A first working pulse signal which has a pulse-width duty ratio D in a switching period Tsis provided. A first adjusting period comprising first N successive switching periods of the first working pulse signal is set, wherein N is a natural number larger than 1. A second working pulse signal which has second N successive switching periods with their corresponding pulse-width duty ratio D1, D2, . . . , DNto drive the switch in the converter circuit is provided and the measured signal is generated, wherein the sum of D1, D2, . . . , DNsubstantially equals to N·D and the second N successive switching periods constitute a second adjusting period.
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Van De Sype, David M. et al. “A Sampling Algorithm for Digitally Controlled Boost PFC Converters” Electrical Energy Laboratory (EELAB), EESA, Ghent University, Gent, Belgium 2002 IEEE, pp. 1693-1698.
Van De Sype, David M. et al. “Sampling Algorithm for Small Input Current Distortion in Digitally Boost PFC Converters” Electrical Energy Laboratory (EELAB), EESA, Ghent University, Gent, Belgium EPE 2003, pp. 1-9.
Qiu Ai-Bin
Ying Jian-Ping
Zeng Jian-Hong
Zhou Zi-Ying
Delta Electronics , Inc.
Volpe and Koenig P.C.
Vu Bao Q
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