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Compensation of Temperature Dependence in a Module Parasitic Based Current Measurement System

Titelangaben

Lautner, Frank ; Bakran, Mark-M.:
Compensation of Temperature Dependence in a Module Parasitic Based Current Measurement System.
In: 2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe). - Piscataway, NJ : IEEE , 2020 . - 10 S.
ISBN 978-9-0758-1536-8
DOI: https://doi.org/10.23919/EPE20ECCEEurope43536.2020.9215655

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

This paper presents a current sensing method, which evaluates the voltage across the parasitic resistance
and inductance in power modules. Such a sensing method requires an appropriate low pass filter to
achieve a signal that is proportional to the current to be measured. In inverter operation, however, the
parasitic resistance in the measurement section is variable due to its temperature dependence. This
requires firstly a temperature estimation for the measurement section in the semiconductor module and
a correction of the deviations arising from that circumstance. At a first glance, three different possible
temperature estimation methods seem possible. The first approach by using an additional temperature
sensor is only considered as a trivial solution and not examined further. Its disadvantage is the additional
component, which is then necessary for current measurement. The second and third method are
investigated in detail, which is on the one hand the use of mostly present negative-temperaturecoefficient
(NTC) thermistors in the module and on the other hand, a completely new approach that
exploits the temperature dependence of the sensed signal waveform. Both approaches were tested in
inverter operation. They improve current sensing errors by means of module parasitics from ± 25 % to
±2…5 %.

Weitere Angaben

Publikationsform: Aufsatz in einem Buch
Begutachteter Beitrag: Nein
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mechatronik
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mechatronik > Lehrstuhl Mechatronik - Univ.-Prof. Dr.-Ing. Mark-M. Bakran
Profilfelder > Advanced Fields > Neue Materialien
Profilfelder > Emerging Fields > Energieforschung und Energietechnologie
Forschungseinrichtungen > Institute in Verbindung mit der Universität > TechnologieAllianzOberfranken (TAO)
Fakultäten
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Emerging Fields
Forschungseinrichtungen
Forschungseinrichtungen > Institute in Verbindung mit der Universität
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 19 Okt 2020 06:06
Letzte Änderung: 20 Jan 2022 10:21
URI: https://eref.uni-bayreuth.de/id/eprint/57261