Battery monitoring current sensors : the fluxgate concept

Azzoni, Davide (LEM SA, Plan-les-Ouates, Switzerland) ; Teppan, Wolfram (LEM SA, Plan-les-Ouates, Switzerland) ; Carpita, Mauro (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland)

One of the difficulties concerning battery monitoring applications is the current measurement. Typically the measurement range (DC) can vary from 10 mA up to 1000 A. Today's available current transducers are not well adapted to work with good accuracy in this very large domain. In this paper a new measurement principle based on a technology of type ldquofluxgaterdquo [1] is presented, which allows reaching a wide measurement range while guaranteeing an excellent accuracy. The key idea is to use the magnetic field created by the primary (battery) current acting on a saturable inductor. By measuring the intervals to reach inductor saturation and the load current and making use of a suitable microcontroller it is possible to accurately evaluate the value of the primary current for both high and low current levels.


Mots-clés:
Type de conférence:
full paper
Faculté:
Ingénierie et Architecture
Ecole:
HEIG-VD
Institut:
IESE - Institut d'Energie et Systèmes Electriques
Adresse bibliogr.:
Barcelona, Spain, 8-10 September 2009
Date:
2009-09
Barcelona, Spain
8-10 September 2009
Pagination:
10 p.
Publié dans:
Proceedings of 2009 13th European Conference on Power Electronics and Applications, 8-10 September 2009, Barcelona, Spain
ISBN:
978-1-4244-4432-8
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 Notice créée le 2020-03-03, modifiée le 2020-10-27

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