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An on-line UPS system with power factor correction and electric isolation using BIFRED converter
- Source :
- IEEE Transactions on Industrial Electronics. Feb, 2008, Vol. 55 Issue 2, p722, 9 p.
- Publication Year :
- 2008
-
Abstract
- This paper presents the design consideration and performance analysis of an on-line, low-cost, high performance, and single-phase uninterruptible power supply (UPS) system based on a boost integrated flyback rectifier/energy storage dc/dc (BIFRED) converter. The system consists of an isolated ac/dc BIFRED converter, a bidirectional dc/dc converter, and a dc/ac inverter. It provides input power factor correction, electric isolation of the input from the output, low battery voltage, and control simplicity. Unlike conventional UPS topologies, the electrical isolation is provided using a high frequency transformer that results in a smaller size and lower cost. Detailed circuit operation, analysis, as well as simulation and experiment results are presented. A novel digital control technique is also presented for UPS inverter control. This controller follows the reference current and voltage of the inverter with a delay of two and four sampling periods, respectively. Index Terms--Battery charger, digital control, integrated converters, inverters, modeling and analysis, power electronic converters, rectifiers, uninterruptible power supplies (UPSs).
- Subjects :
- Electric current converters -- Design and construction
Uninterruptible power supply -- Equipment and supplies
Battery chargers -- Design and construction
Digital control systems -- Design and construction
Power electronics -- Research
Electric current converter
UPS
Business
Computers
Electronics
Electronics and electrical industries
Subjects
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 55
- Issue :
- 2
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.175020896