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
11227280
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
LandOfFree
Control system, method and product for uninterruptible power... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control system, method and product for uninterruptible power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system, method and product for uninterruptible power... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3910632