Extreme High Efficiency Non-Inverting Buck-Boost Converter for Energy Storage Systems
Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2016
Pages: 8Language: englishTyp: PDF
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Authors:
Yu, Zhe; Kapels, Holger (Fraunhofer Institute for Silicon Technology ISIT, Application Center Power Electronics for Renewable Energy Systems, Steindamm 94, 20099 Hamburg, Germany)
Hoffmann, Klaus F. (Helmut Schmidt University, Holstenhofweg 85, 22043 Hamburg, Germany)
Abstract:
This paper presents a high efficiency bidirectional non-inverting buck-boost converter for energy storage systems. A new control concept for achieving high efficient power conversion within a wide power range is introduced. A 3 kW prototype is designed and tested with Siand SiC-MOSFETs. Experimental results show that the prototype achieves a minimum efficiency of more than 98% at 5% load and a maximum efficiency of more than 99.4% at the operating points where the output voltage approaches the level of the input voltage.