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

This paper 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.

H-bridge IGBT

Efficiency

Electric vehicle

Multilevel system

Switching losses

Multilevel converter

Battery

Conduction losses

MOSFET

Cascaded

Author

Anton Kersten

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

Manuel Kuder

Bundeswehr University Munich

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

Bundeswehr University Munich

Richard Eckerle

Bundeswehr University Munich

2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe

1-12 19191726

2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
Genova, Italy,

Loss and EMI reduction in electrified vehicle through the usage of a multilevel converter

Swedish Energy Agency (44807-1), 2017-07-01 -- 2021-12-31.

Areas of Advance

Transport

Energy

Subject Categories

Other Engineering and Technologies not elsewhere specified

Vehicle Engineering

Electrical Engineering, Electronic Engineering, Information Engineering

Energy Systems

Control Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.23919/EPE.2019.8915147

More information

Latest update

1/18/2022