Assessment of Efficiency and Reliability of Wide Band-Gap Based H8 Inverter in Electric Vehicle Applications

Luca Concari, Davide Barater, Andrea Toscani, Carlo Concari, Giovanni Franceschini, Giampaolo Buticchi, Marco Liserre and He Zhang
Additional contact information
Luca Concari: Zapi S.p.A., I-42028 Poviglio (RE), Italy
Davide Barater: Department of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, I-41125 Modena, Italy
Andrea Toscani: Department of Engineering and Architecture, University of Parma, I-43124 Parma, Italy
Carlo Concari: Department of Engineering and Architecture, University of Parma, I-43124 Parma, Italy
Giovanni Franceschini: Department of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, I-41125 Modena, Italy
Giampaolo Buticchi: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo 315100, China
Marco Liserre: Chair of Power Electronics, Christian-Albrechts University, Kiel, D-24143 Kiel, Germany
He Zhang: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo 315100, China

Energies, 2019, vol. 12, issue 10, 1-17

Abstract: This paper analyzes the performance of a three-phase converter architecture with a reduced common mode voltage to be used in electric motor drives. Starting from the classical three-phase bridge architecture, two additional switches are inserted in the DC link, in order to decouple the source from the load during the freewheeling intervals. Ad-hoc modulation strategies are introduced and evaluated against the classical three-phase space vector modulation. Three main parameters are analyzed: common mode voltage, efficiency and reliability. Experimental measurements on a converter prototype are used to evaluate the common mode performance. The efficiency in the case of Si-IGBT and SiC-MOSFETs is experimentally evaluated. Reliability analysis performed with a Coffin-Mason model showed that the higher efficiency offered by the SiC devices allows for a marked extension of the lifetime.

Keywords: pulse width modulated inverter; motor drive; electric vehicle; pulse-width modulation; space vector; common-mode voltage; leakage current (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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