NDLI: A novel on-line UPS with universal filtering capabilities

Content Provider	IEEE Xplore Digital Library
Author	Kamran, F. Habetler, T.G.
Copyright Year	1995
Description	Author affiliation: Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA (Kamran, F.; Habetler, T.G.)
Abstract	A novel line-interactive uninterruptible power supply (UPS) is proposed that offers the characteristics of an "online" or "inverter-preferred," UPS (which incorporates a PWM rectifier) at a reduced cost. This new UPS is based on the combination of two full-bridge VSI power converters: one in series with the input; and the other in parallel with the load. The UPS acts as a line conditioner and output voltage stabilizer in the presence of input power while charging the battery at a controlled rate. In the case of loss of input power, the UPS can make a seamless transition to backup mode while supplying the load with a controlled sinusoidal voltage; drawing power from the battery. The series power converter sees only a small percentage of the input voltage (typically 10-20%) while carrying the input current and therefore has a small kVA rating. The parallel power converter supplies the load during blackout and hence determines the total kVA rating of the UPS. The reduced kVA rating of the series power converter results in reduced system cost compared to conventional online systems without sacrificing any desirable characteristics. A laboratory version of the proposed UPS has been built to demonstrate the claimed capabilities and both simulation and experimental results are included in the paper.
Starting Page	500
Ending Page	506
File Size	591745
Page Count	7
File Format	PDF
ISBN	0780327306
DOI	10.1109/PESC.1995.474856
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-18
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Uninterruptible power systems Filtering Batteries Switches Pulse width modulation inverters Rectifiers Pulse width modulation Voltage control Costs Power supplies
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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