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.

Cascaded

modular

multi-level

Multilevel system

converter

Conduction losses

MOSFET

Battery

H-bridge

Electric vehicle

MMC

Efficiency

IGBT

Switching losses

Multilevel converter

Author

Alan Kerstein

Chalmers, Mechanics and Maritime Sciences, Combustion

Manuel Kuder

University of the German Federal Armed Forces

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, Electrical Machines and Power Electronics

Thomas Weyh

University of the German Federal Armed Forces

Richard Eckerle

University of the German Federal Armed Forces

2019 21ST EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE '19 ECCE EUROPE)

2325-0313 (ISSN)

21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
genua, Italy,

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.23919/EPE.2019.8915147

ISBN

9789075815313

More information

Latest update

5/20/2020