Exponential Modular Multilevel Converter for Low Voltage Applications
Paper in proceeding, 2019

This paper presents the structure and control of a single phase Exponential Modular Multilevel Converter (EMMC), which works as a bidirectional AC/DC converter. In addition to the main H-bridge converter, it uses series connected H-bridges with DC link capacitors. The nominal voltage rating of the capacitors is increased with each module by factor of two. In this manner, the number of output voltage levels exponentially increases with the number of series connected H-bridges. By using low-voltage MOSFETs it is possible to achieve a very high efficiency, especially at partial loading. The high number of voltage levels reduces the output voltage THD, while using a low switching frequency. Thus, the required grid filter size can be substantially reduced. Furthermore, the additional capacitor modules increase the nominal output voltage at the AC side, so that the flow of the active and reactive power can be dynamically adjusted. Therefore, the EMMC could be used, for instance, as a vehicle charger directly connected to the grid.

Exponential Modular Multi-level Converter

H-bridge

Multi-level inverter

dSPACE

Electric vehicle

Cascaded

Car Charger

MOSFET

Multilevel system

Author

Manuel Kuder

University of the German Federal Armed Forces

Anton Kersten

Chalmers, Electrical Engineering, Electric Power Engineering

Lukas Bergmann

Technical University of Munich

Richard Eckerle

Florian Helling

University of the German Federal Armed Forces

Thomas Weyh

University of the German Federal Armed Forces

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

1-11 19191782

21st European Conference on Power Electronics and Applications (EPE 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

Electrical Engineering, Electronic Engineering, Information Engineering

Energy Systems

Control Engineering

Signal Processing

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.23919/EPE.2019.8915156

More information

Latest update

1/3/2024 9