Title :
Two-stage interleaved power conditioner for connecting a 5 kW el. SOFC with a 750 V dc link
Author :
Averberg, A. ; Tran, H.N. ; Nguyen, C.Q. ; Mertens, A.
Author_Institution :
Inst. for Drive Syst. & Power Electron., Leibniz Univ. Hannover, Hannover, Germany
Abstract :
A power conditioner with a high voltage gain for a combined heat and power generation system based on a solid oxide fuel cell is presented in this paper. The power conditioner consists of two dc-to-dc stages: an interleaved boost converter with minimized input current ripple and a series resonant converter. By analytic investigation, a pre-estimation of the converter´s efficiency is shown and a method for calculating the current ripple of multi-phase interleaved converters is presented. The analytic results are used for an optimized converter design of a 5 kW prototype. An efficiency of 94.6% at nominal operation is reached.
Keywords :
DC-DC power convertors; cogeneration; fuel cell power plants; resonant power convertors; solid oxide fuel cells; combined heat and power generation system; dc-to-dc convertor; efficiency 94.6 percent; interleaved boost converter; multi-phase interleaved converters; power 5 kW; series resonant converter; solid oxide fuel cell; two-stage interleaved power conditioner; voltage 750 V; Cogeneration; DC-DC power converters; Fuel cells; Inductance; Joining processes; Power electronics; Power transformer insulation; Resonance; Solids; Voltage; SOFC; dc-dc converter; interleaved converter; low current ripple; series resonant converter;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5542365
