Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2008-01-29
2008-01-29
Patel, Rajnikant B. (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S290000, C363S080000, C363S089000, C327S530000
Reexamination Certificate
active
07323851
ABSTRACT:
A PFC AC-to-DC power supply is disclosed. According to various embodiments, the PFC AC-to-DC power supply comprises a switching converter comprising at least one main power switch and a PFC controller for controlling the at least one main power switch. The PFC controller may comprise a processing unit comprising a processor and a memory having firmware stored thereon which, when executed by the processor, causes the processor to compute an input current set point for the AC-to-DC power supply based on the output voltage of the AC-to-DC power supply. The PFC controller may also comprise hardware circuitry in communication with the processing unit. The hardware circuitry may comprise a first a/d converter, such as a window a/d converter, for outputting a digital input current error value based on the input current of the AC-to-DC power supply and an analog form of the input current set point from the processing unit. The hardware circuitry may also comprise a digital current mode compensator in communication with the first a/d converter for determining the duty cycle for the at least one main power switch based on the digital input current error value from the a/d converter.
REFERENCES:
patent: 5631550 (1997-05-01), Castro et al.
patent: 5777866 (1998-07-01), Jacobs et al.
patent: 5801935 (1998-09-01), Sugden et al.
patent: 6191676 (2001-02-01), Gabor
patent: 6448745 (2002-09-01), Killat
patent: 6917185 (2005-07-01), Okamoto
patent: 2003/0090242 (2003-05-01), Lin
patent: 2003/0184938 (2003-10-01), Tan
patent: 2004/0027096 (2004-02-01), Chen
patent: 2004/0150377 (2004-08-01), Elek et al.
patent: 2004/0164718 (2004-08-01), McDaniel
patent: 2005/0007083 (2005-01-01), Yang
patent: 2005/0088864 (2005-04-01), Montorsi et al.
patent: 2005/0128773 (2005-06-01), Yang et al.
patent: 2005/0146908 (2005-07-01), Feldtkeller
patent: 2005/0174813 (2005-08-01), Dou
patent: 2005/0201124 (2005-09-01), Lanni
patent: WO 00/07414 (2000-02-01), None
Chen, J., et al., “Predictive digital current programmed control,” IEEE Trans. on Power Electronics, vol. 18, Issue 1, Part 2, Jan. 2003, pp. 411-419.
Xie, M., “Digital Control For Power Factor Correction,” PhD. Thesis, Virgina Polytechnic Institute and State University, Jun. 2003.
Zhang, W., et al., “DSP Implementation of Predictive Control Strategy for Power Factor Correction (PFC),” IEEE 2004, no date.
Artesyn Technologies, Inc.
Kirkpatrick & Lockhart Preston Gates & Ellis LLP
Patel Rajnikant B.
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