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- 저자 : Florian Krismer (검색결과 2 건)
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22kW EV Battery Charger Allowing Full Power Delivery in 3-Phase as well as 1-Phase Operation
Panteleimon Papamanolis,Florian Krismer,Johann W. Kolar 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
A new universal front-end PFC rectifier topology of a battery charger for Electric Vehicles (EVs) is proposed, which allows fast charging at rated and/or full power level in case of 1-phase (USA) as well as 3-phase (Europe) mains supply. For a conventional 3-phase PFC rectifier, only 1/3 of the rated power would be available in case of 1-phase operation. The new topology is based on a two-level six-switch (2LB6) 3-phase PFC rectifier, which is extended with a diode bridge-leg and additional windings of the Common-Mode (CM) chokes of the EMI filter. The focus of the paper is on the analysis of the generated CM and Differential Mode (DM) EMI noise for both operating modes, i.e., 1-phase and 3-phase operation, resulting in guidelines for EMI filter design. The suggested topology modifications are also applied to a three-level T-type (Vienna) PFC rectifier structure. The theoretical considerations are verified with simulations. Finally, a 22kW prototype of the new universal PFC rectifier is designed using ƞ-ρ Pareto optimization, targeting an efficiency of 98.4 %, a power density of 6.8 kW/dm³, i.e., a volume of 3.24ddm³, and an EMI filter that ensures compliance with the CISPR class B EMI standard. Compared to a volume-optimized design of a conventional 3-phase topology of same power rating and efficiency, but limited 1-phase power transfer capability, the additional volume required for the proposed extension is less than 0.5dm3 (15%) and therefore clearly justified considering the enabled universal applicability of the converter system.
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New 40kV / 300kVA Quasi-2-Level Operated 5-Level Flying Capacitor SiC “Super-Switch” IPM
Piotr Czyz,Panteleimon Papamanolis,Thomas Guillod,Florian Krismer,Johann W. Kolar 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
Emerging applications, e.g., traction systems and utility scale renewable energy systems, demand for Medium Voltage (MV) power electronic switches with blocking capabilities above 20kV, which cannot be provided with today’s 10kV or 15kV SiC power semiconductors. Therefore, this work investigates different concepts for the realization of a MV halfbridge, i.e., a series connection of 10kV SiC MOSFETs, a JFET Super Cascode arrangement, and Modular Multilevel Converter (MMCs) and Flying Capacitor Converter (FCCs) topologies. The FCC topology features several advantages such as reduced switching losses, reduced chip area, lower dv/dt of the switching transitions, and robust voltage balancing. Moreover, the volume of the flying capacitors can be reduced with Quasi-2-Level (Q2L) operation of the half-bridge, where the intermediate voltage levels are only used during very short time intervals, i.e., during the switching transitions. This paper analyzes the design, the switching behavior, and the voltage balancing of the Q2L-FCC bridge-leg and confirms its suitability as a versatile MV switch. Finally, the integration of a complete bridge-leg, including gate drivers, isolated cooling interfaces, measurements, and Q2L control into a 300kVA / 40kV SiC Super-Switch Intelligent Power Module (SiC-SS-IPM) is presented.
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