Inverter and Battery Drive Cycle Efficiency Comparisons of CHB and MMSP Traction Inverters for Electric Vehicles
Paper in proceedings, 2019

This papers investigates the performance of several inverter types for electric vehicles. A standard two-level and two seven-level multilevel inverters, a cascaded H-bridge (CHB) and a modular multilevel series parallel (MMSP) inverter, are considered. Based on the AC impedance spectra measured on a single battery cell, the battery pack impedances of the multilevel and two-level inverter systems are modeled. The inverter losses are modeled using the semiconductors' datasheets. Based on the loss models, the inverter and battery efficiency during different driving cycles are assessed. In comparison to the two-level inverter system, the multilevel inverter drivetrains show an increased drivetrain efficiency, despite increased battery losses. The MMSP topology showed the best result. In comparison to the CHB topology, the battery losses were reduced by the MMSP inverter system.

Author

Anton Kersten

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Manuel Kuder

Universität Der Bundeswehr München

Emma Grunditz

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Zeyang Geng

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Evelina Wikner

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Torbjörn Thiringer

Chalmers, Electrical Engineering, Electric Power Engineering

Thomas Weyh

Universität Der Bundeswehr München

Richard Eckerle

Universität Der Bundeswehr München

EPE Journal (European Power Electronics and Drives Journal)

0939-8368 (ISSN)

2019 21st European Conference on Power Electronics and Applications
Genova, ,

Subject Categories

Other Engineering and Technologies not elsewhere specified

Vehicle Engineering

Computer Systems

DOI

10.23919/EPE.2019.8915147

More information

Latest update

10/16/2020