Modified High Level DC-DC Converter Based Online Transformerless Uninterruptible Power Supply (UPS)

Shruthi S , Neetha H M , Kiran Kumar G R , Kalpana S

Uninterruptible power supply, Battery charger/discharger, Power factor correction, transformerless UPS;

To provide reliable and high quality power for critical loads in all grid conditions, Uninterruptible Power Supplies (UPS) are widely used. A non-isolated online uninterruptible power supply (UPS) system is proposed in this paper. This system consists of bridgeless PFC boost rectifier, battery charger/discharger, and an inverter. A new battery charger/discharger has been implemented which ensures the bidirectional flow of power between dc-link and battery bank, reducing the battery bank voltage to only 24V, and regulates the dc-link voltage during battery power mode. Operating batteries in parallel improves the battery performance and resolve the problems related to conventional battery banks that arrange batteries in series. The output voltage for both linear and non-linear loads regulating system is proposed which contains a new control method, integrating slide mode and proportional-resonant control, for inverter. The controller exhibits excellent performance during transients and step changes in load. Operating principle and experimental results of 1kVA prototype have been presented for validation of the proposed system.

Published Paper   E-Certificate

"Modified High Level DC-DC Converter Based Online Transformerless Uninterruptible Power Supply (UPS)", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.5, Issue 11, page no.185 - 194, November-2020, Available :https://ijsdr.org/papers/IJSDR2011029.pdf

Volume 5 Issue 11, November-2020

Pages : 185 - 194

Paper Reg. ID: IJSDR_192710

Published Paper Id: IJSDR2011029

Downloads: 000347261

Research Area: Engineering

Country: Shivamogga, Karnataka, India

Published Paper PDF: https://ijsdr.org/papers/IJSDR2011029

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR2011029

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJSDR(IJ Publication) Janvi Wave

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