CM & Line-Dm Noise Separation for Three-Level NPC Inverter with Connected Neutral Point for Vehicle Traction Applications
Paper in proceedings, 2019

EMI standards limit the noise level for conducted disturbances on DC power cables of electric vehicles. However, designing the EMI filter requires the information about the CM and DM noise levels. Therefore, a separation of the noise is needed. This paper deals with the separation and quantification of the three-phase DM and CM noise for a three-level NPC inverter with a connected neutral point. A hardware separator, based on HF transformers was developed to separate the noise into CM and line-DM noise. The CM and line-DM noise of the NPC inverter was measured, when operating the inverter with a two-level and a three-level modulation. As expected, the CM noise is dominating, and it is shown that the three-level operation reduces the noise compared to the two-level operation by about 3 to 6 dB.

Author

Anton Kersten

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

Karl Oberdieck

RWTH Aachen University

Jerome Gossmann

RWTH Aachen University

Andreas Bubert

RWTH Aachen University

Rolf Loewenherz

RWTH Aachen University

Markus Neubert

RWTH Aachen University

Emma Grunditz

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

Torbjörn Thiringer

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

Rik W. De Doncker

RWTH Aachen University

ITEC 2019 - 2019 IEEE Transportation Electrification Conference and Expo

Vol. June 2019 8790588

2019 IEEE Transportation Electrification Conference and Expo, ITEC 2019
Novi, USA,

Subject Categories

Other Engineering and Technologies not elsewhere specified

Signal Processing

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ITEC.2019.8790588

More information

Latest update

1/7/2020 5