Faculté des Sciences appliquées
Faculté des Sciences appliquées

Master thesis : Model-based-design to develop sensorless fan

Halin, Anaïs ULiège
Promotor(s) : Geuzaine, Christophe ULiège
Date of defense : 26-Jun-2017/27-Jun-2017 • Permalink :
Title : Master thesis : Model-based-design to develop sensorless fan
Author : Halin, Anaïs ULiège
Date of defense  : 26-Jun-2017/27-Jun-2017
Advisor(s) : Geuzaine, Christophe ULiège
Committee's member(s) : Vanderbemden, Philippe ULiège
Drion, Guillaume ULiège
Lambrechts, Marc 
Language : English
Number of pages : 76
Keywords : [en] BLDC motor
[en] modelling
[en] Matlab
Discipline(s) : Engineering, computing & technology > Electrical & electronics engineering
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil électricien, à finalité spécialisée en "electrical engineering"
Faculty: Master thesis of the Faculté des Sciences appliquées


[en] Melexis specializes in developing robust sensorless actuators integrated circuits for automotive applications like water-oil-fuel pumps, engine cooling fans and hvac (heating, ventilating, and air conditioning) blowers.
This master thesis intends for the iterative development of a realistic electro-mechanical system model for existing hvac blowers, controlled without sensors (sensorless control loop), via electronics that measure motor current and motor voltage (self-sensing solution). It aims to predict the behavior of the fan for various control algorithms. Purpose is to accelerate future designs with efficient and robust control algorithms for self-sensing fans and pumps.
In order to reach these objectives, the first step is to select the modelling tool, then to create a model (first in open-loop, then in closed-loop) with available BLDC (brushless direct current) motor systems knowhow from Melexis application engineers. This is done by performing iterative fitting with real system behaviour and simplifying the model to the essence.
Furthermore, this document presents a way to find the electrical and mechanical motor’s parameters which are necessary to run the model. Finally, the model allowed to perform a parametric analysis for hvac blowers enabling to better understand the key parameters influencing the behavior of such systems.



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  • Halin, Anaïs ULiège Université de Liège > Master ingé. civ. électr., à fin.


Committee's member(s)

  • Vanderbemden, Philippe ULiège Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
    ORBi View his publications on ORBi
  • Drion, Guillaume ULiège Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
    ORBi View his publications on ORBi
  • Lambrechts, Marc Melexis
  • Total number of views 52
  • Total number of downloads 238

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