Electrical transmission or interconnection systems – Plural supply circuits or sources
Reexamination Certificate
2008-06-24
2008-06-24
Sherry, Michael J (Department: 2836)
Electrical transmission or interconnection systems
Plural supply circuits or sources
C363S034000, C363S037000
Reexamination Certificate
active
07391132
ABSTRACT:
An uninterruptible power supply (UPS) includes an AC power source, a DC power source coupled to a DC bus, a load, a converter, an inverter and a controller. Responsive to the controller, the inverter receives power from the DC bus to supply the load a regulated voltage; the converter, operated in a hybrid mode, receiving power from the AC power source to supply the DC bus a regulated DC voltage in a double conversion mode or to supply the power to the load in a series-parallel mode, or a combination of the two modes. In the stored energy mode, with an additional bypass switch, both the converter and inverter receive power from the DC power source and jointly supply the load a high quality voltage. These configurations improve the efficiency and enable the UPS readily meet the VFI and the high quality output voltage requirements per IEC62040-3.
REFERENCES:
patent: 4709318 (1987-11-01), Gephart et al.
patent: 5136494 (1992-08-01), Akagi et al.
patent: 5686768 (1997-11-01), Thomsen et al.
patent: 6160722 (2000-12-01), Thommes et al.
patent: 6204627 (2001-03-01), Watanabe et al.
patent: 6266260 (2001-07-01), Zahrte, Sr. et al.
patent: 6295215 (2001-09-01), Faria et al.
patent: 6310787 (2001-10-01), Ito et al.
patent: 6556457 (2003-04-01), Shimazaki et al.
patent: 6744648 (2004-06-01), Chen
patent: 6753622 (2004-06-01), Oughton, Jr.
patent: 6856137 (2005-02-01), Roden et al.
patent: 7019989 (2006-03-01), Kobayashi et al.
patent: 7050312 (2006-05-01), Tracy et al.
patent: 2003/0155928 (2003-08-01), Roden et al.
patent: 2003/0227785 (2003-12-01), Johnson, Jr.
Nasiri et al., “Reduced parts single-phase series-parallel UPS systems with active filter capabilities”, The 25th Internatonal Telecommunication Energy Conference, 2003, INTELEC, pp. 366-372.
Solter et al., “A new international UPS classification by IEC 62040-3: Method of specifying the performance and test requirments”, The 24th International Telecommunication Energy Conference, 2002, INTELEC, pp. 541-545.
Dixon, “Average current mode control of switching power supplies”, Application Note U-140, Unitrode Corporation, pp. 356-369.
Birch & Stewart Kolasch & Birch, LLP
Kaplan Hal I
Sherry Michael J
LandOfFree
Methods and apparatus providing double... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus providing double..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus providing double... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2810153