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A bidirectional AC-DC converter with high power efficiency and high power factor using fast FPGA digital control

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6 Author(s)
Matsuo, H. ; Grad. Sch. of Sci. & Technol., Nagasaki Univ., Nagasaki, Japan ; Suetomi, M. ; Fujino, S. ; Harada, K.
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This paper deals with bidirectional AC-DC converter with high power efficiency and high power factor, in which the novel FPGA control strategy is applied. The prototype bidirectional AC-DC converter of the rated power of 2kW is made and tested. As a result, in both forward operation mode and regenerative one, the power efficiency is at 97.0% at the rated output power of 2kW, is over 98.0% at 25% output power of the rated one and maximum one is 98.4% at 0.7kW. The power factor is over 0.99 under the output power condition from 20% to the rated one and over 0.96 under 10% output power condition of the rated one. The transient response time is under half period, when the converter operation is changed from the forward mode to regenerative one.

Published in:

Telecommunications Energy Conference (INTELEC), 2012 IEEE 34th International

Date of Conference:

Sept. 30 2012-Oct. 4 2012

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