A novel transformer-less UPS is developed in this project. The proposed UPS use high gain bidirectional converter which operates between the dc-link voltage and battery bank. Using bidirectional charger/discharger, the battery bank is reduced to only two batteries in series, thus eliminating the disadvantage related to a series string of batteries. The bridgeless boost rectifier provides the regulated dc-link voltage to feed the inverter and maintain the power factor correction. A robust control scheme has been implemented for the inverter control which shows good performance against the non-linear and impulsive load.
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For any inquiries, kindly contact:
Lee Ching Shya
UMCIC Business Officer University of Malaya