Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Reexamination Certificate
2008-05-13
2008-05-13
Sherry, Michael (Department: 2836)
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
C307S066000, C307S017000
Reexamination Certificate
active
07372177
ABSTRACT:
A control system for an uninterruptible power supply (UPS) for servicing a load is disclosed. The UPS includes a first feed path and a second feed path, where the first feed path is operable in parallel with the second feed path. The first feed path is engagable via a first switch to deliver a bypass current to the load. The second feed path includes a rectifier, an inverter responsive to a control signal and in electrical communication with the rectifier, and an output transformer in electrical communication with the inverter. The second feed path is engagable via a second switch to deliver an inverter current to the load. The control system is configured for facilitating magnetization of the transformer via a back-feed from the first feed path in response to the load being fed by the first feed path, the rectifier being off, and the inverter being off.
REFERENCES:
patent: 5315533 (1994-05-01), Stich et al.
patent: 6917124 (2005-07-01), Shetler et al.
S.W. Steele; “Uninterruptible Battery Backup for IBM AS/400 Systems”, IBM J. RES. & DEV., vol. 45: Nov. 2001, pp. 763-770.
S. Shimizu et al.; “Control Technologies Utilized in the UPS”, Sanyo Denki Technical Report; No. 14: Nov. 2002, pp. 5-8.
“Uninterruptible Power Supply”; product description, [online] http://en.wikipedia.org/wiki/Uninterruptible—power—supply [retrieved Dec. 30, 2004].
“Suppression of Powerline Noise with Isolation Transformers” product description, [online] http://www.blackmagic.com/ses/bruceg/EMC/isolatrans.html [retrieved Dec. 30, 2004].
“APOTRANS” product description, [online] http://www.powertech.co.nz/d.asp?productid=14 [retrieved Dec. 30,2004].
“Selecting a UPS System for Critical Power Applications”; product description, [online] http://www.ecmweb.com/powerquality/electric—selecting—ups—system/ [retrieved Dec. 30, 2004].
“Comparing the S&C PureWave UPS System to On-Line UPS Systems”; product description, [online] http://www.sandc.com/webzine/020904—1.asp [retrieved Jan. 24, 2005].
“Uninterruptible Power Supply (UPS) with DSP56F80x”; product description, [online] http://www.freescale.com/webapp/sps/site/application.jsp?nodeId=023Z1DxpCp8GVS [retrieved Jan. 24, 2005].
Colombi Silvio
Delmuè Andrea
Strozzi Lauro
Cantor & Colburn LLP
General Electric Company
Rutland-Wallis Michael
Sherry Michael
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