1 The Faculty of Engineering and Science, Aalborg University, VBN2 Department of Energy Technology, The Faculty of Engineering and Science, Aalborg University, VBN3 City University of Hong Kong4 City University of Hong Kong
A dc-link module composed of dc-link capacitors and a series voltage compensator has been proposed. It has been verified that the module can reduce the dc-link capacitance to 10–20% while achieving a very low voltage ripple across its output terminals. This paper investigates the required dc-link capacitance when a certain period of hold-up time is considered. Trade-off design conditions are presented and the hold-up time is compared with the solution without the series voltage compensator. The analysis is crucial to power converters connected to critical loads when hold-up time is required. The theoretical predictions have been verified by experimental results.
Proceedings of the 4th Ieee Energy Conversion Congress and Exposition (ecce 2012), 2012, p. 1095-1100
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the Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012