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Maximum-Efficiency Tracking Scheme for Piezoelectric-Transformer Inverter with Dimming Control
Satoshi Nakashima,Hiroshi Ogasawara,Hidenori Kakehashi,Tamotsu Ninomiya 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
This paper provides a solution for the problem of efficiency decrease caused by load variation. A novel control scheme of tracking the PT's operation frequency for the maximum efficiency is proposed. As a result, a high efficiency over 80% has been achieved even under the output-current decrease down to 10% of the full load current.