Interleaved,switched-inductor,multi-phase,multi-device DC/DC boost converter for non-isolated and high conversion ratio fuel cell applications |
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| Affiliation: | 1. Daimler AG, Neue Str. 95, D-73230, Kirchheim Unter Teck, Germany;2. Electrochemistry Laboratory, Paul Scherrer Institut, 5232, Villigen, PSI, Switzerland;3. NuCellSys GmbH, Neue Str. 95, D-73230, Kirchheim Unter Teck, Germany;4. MS2 Engineering und Anlagenbau GmbH, Carl-Zeiss-Straße 31, D-73230, Kirchheim Unter Teck, Germany;5. Laboratory of Physical Chemistry, ETH Zürich, 8093, Zürich, Switzerland;1. ENSIT, University of Tunis, Tunisia;2. Laboratory of Computer for Industrial Systems (LISI), University of Tunisia, 05 AV Taha Hussein Montfleury, 1008, Tunisia;1. University Grenoble Alpes, G2Elab, 21 rue des martyrs, 38000 Grenoble, France;2. Univ. Bourgogne Franche-Comte, UTBM, IRTES, EA 7274, UTBM, 90010, Belfort Cedex, France;3. Univ. Bourgogne Franche-Comte, UTBM, FEMTO-ST Institute, Energy Department, UMR CNRS, 6174, UTBM, 90010, Belfort Cedex, France;4. Fuel Cell Laboratory, FCLAB, FR CNRS, 3539, UTBM, 90010, Belfort Cedex, France |
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| Abstract: | Fuel cell power conditioners often require high step-up voltage gains to accommodate low input fuel cell voltages into high voltage busses. Traditional non-isolated DC-DC boost converters are unable to offer such as gains because of several parasitic elements and non-ideal behaviour of power semiconductors and driving circuits. Moreover, paralleled converters are also desirable to simplify power-up scaling and to reduce input/output current ripples. In this context, a very versatile non-isolated, high step-up voltage gain, interleaved boost converter is presented in this work. Steady-state analysis, simulation and evaluation of different converter structures are discussed in detail. Finally, a 500-W experimental prototype for Nexa Ballard 1.2 kW fuel cell specifications has been implemented and tested to verify the performance. |
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| Keywords: | Interleaved Switched-inductor Multi-phase Multi-device DC/DC Fuel cell |
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