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Rotary Position Sensors Comparative study of different rotary position sensors for electrical machines used in an hybrid electric vehicle application

Ebbesson, Christer (2011) In CODEN:LUTEDX/TEIE EIE920 20111
Industrial Electrical Engineering and Automation
Abstract
Today, many projects about Electric Vehicles (EVs) and Hybrid Electric Vehicles
(HEVs) are in progress within the automotive industry. Fuel-efficiency and reduction of carbon dioxide emissions from vehicles are the main targets. This
thesis is within in one of these projects that is called electric All Wheel Drive(eAWD) at BorgWarner TorqTransfer Systems AB.
A key parameter to perform an accurate and efficient control of an electric
machine is the position sensor. The sensor measures the angular position of the
rotor shaft and there are several ways and techniques to do this.
This thesis aims to compare different common position sensors and identify
”new” sensor techniques by performing a literature study, model and simulate
... (More)
Today, many projects about Electric Vehicles (EVs) and Hybrid Electric Vehicles
(HEVs) are in progress within the automotive industry. Fuel-efficiency and reduction of carbon dioxide emissions from vehicles are the main targets. This
thesis is within in one of these projects that is called electric All Wheel Drive(eAWD) at BorgWarner TorqTransfer Systems AB.
A key parameter to perform an accurate and efficient control of an electric
machine is the position sensor. The sensor measures the angular position of the
rotor shaft and there are several ways and techniques to do this.
This thesis aims to compare different common position sensors and identify
”new” sensor techniques by performing a literature study, model and simulate
sensors and test an electric machine with different sensors implemented. Various
enhancement methods to improve the position information and prediction are
also evaluated.
The electric motor prototype used in the eAWD project has different position
sensors implemented and these are simulated in Matlab/Simulink together with
the system model of the electric machine and control system. Tests are also
performed and compared to the simulation results.
The results show on best performance when using the resolver as position
sensor. The Hall-effect sensor can be improved with an observer, but the observer is not suitable for this specific type of Torque Vectoring (TV) application.
The Hall-effect sensor has a speed dependent torque ripple that leads to harmonics at frequencies that relates to the speed of the unit which may causes
problems, such as mechanical resonances in the system. There are several ”new”
sensor techniques based on the theory of eddy-currents that may be of interest
since they are said to be more optimized for EV and HEV applications. (Less)
Please use this url to cite or link to this publication:
author
Ebbesson, Christer
supervisor
organization
course
EIE920 20111
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
CODEN:LUTEDX/TEIE
report number
5287
language
English
id
3632648
date added to LUP
2013-05-22 06:39:33
date last changed
2014-09-04 08:29:59
@misc{3632648,
  abstract     = {Today, many projects about Electric Vehicles (EVs) and Hybrid Electric Vehicles
(HEVs) are in progress within the automotive industry. Fuel-efficiency and reduction of carbon dioxide emissions from vehicles are the main targets. This
thesis is within in one of these projects that is called electric All Wheel Drive(eAWD) at BorgWarner TorqTransfer Systems AB.
A key parameter to perform an accurate and efficient control of an electric
machine is the position sensor. The sensor measures the angular position of the
rotor shaft and there are several ways and techniques to do this.
This thesis aims to compare different common position sensors and identify
”new” sensor techniques by performing a literature study, model and simulate
sensors and test an electric machine with different sensors implemented. Various
enhancement methods to improve the position information and prediction are
also evaluated.
The electric motor prototype used in the eAWD project has different position
sensors implemented and these are simulated in Matlab/Simulink together with
the system model of the electric machine and control system. Tests are also
performed and compared to the simulation results.
The results show on best performance when using the resolver as position
sensor. The Hall-effect sensor can be improved with an observer, but the observer is not suitable for this specific type of Torque Vectoring (TV) application.
The Hall-effect sensor has a speed dependent torque ripple that leads to harmonics at frequencies that relates to the speed of the unit which may causes
problems, such as mechanical resonances in the system. There are several ”new”
sensor techniques based on the theory of eddy-currents that may be of interest
since they are said to be more optimized for EV and HEV applications.},
  author       = {Ebbesson, Christer},
  language     = {eng},
  note         = {Student Paper},
  series       = {CODEN:LUTEDX/TEIE},
  title        = {Rotary Position Sensors Comparative study of different rotary position sensors for electrical machines used in an hybrid electric vehicle application},
  year         = {2011},
}