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Research on Buck/Boost active storage capacitor converter for PFC
Pages: 101-105
Year: Issue:  4
Journal: Electric Machines and Control

Keyword:  PFCelectrolytic capacitorcapacitancelife timeactive storage capacitor converter;
Abstract: In Power factor correction converter,the input power is pulsating while the output power is con-stant,and storage capacitor is needed to balance the power difference.Being widely used in PFC convert-er,electrolytic capacitor is large in size and its life-time is relatively short.For the improvement of the power density and the life time of PFC converter,it is necessary to use other kinds of capacitor instead of electrolytic capacitor.Relationship among the storage capacitance,its voltage and output power was ana-lyzed,supposing the input power factor is 1.The proposed method of Buck/Boost active storage capacitor converter largely reduces the capacitance while the input power factor is unity and thus film or ceramic capacitor can be used as storage capacitor.The mechanism and new control method as well as the imple-mentation circuit were analyzed.Experiments of a 60W prototype were done to verify the analysis.
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