Thomas Hammarström
Lecturer at
Chalmers, Electrical Engineering, Electric Power Engineering, Power grids and Components
I received my Ph.D. degree 2014 in High Voltage Engineering at Chalmers University of Technology in Gothenburg, Sweden, where the main focus is on analyzing partial discharges occurring within high voltage insulation at steep voltage fronts, such as PWM. The main goal is to understand and quantify the increased electricall struss caused by such waveforms. This research aims to provide insights will act as an aid to improve the life of high voltage insulation such as motor windings.
Source: chalmers.se
Showing 27 publications
2018
Differences in partial discharge characteristics due to increased conductivity of the insulation material
Thomas Hammarström
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
Paper in proceedings
2018
Partial Discharge Measurements under DC Voltages Containing Harmonics Produced by Power Electronic Devices
Pietro Romano, Amir Parastar, A. Imburgia et al
Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP, p. 558-561
Paper in proceedings
2018
Multilevel PWM: A Tool to Explore Insulation PD Characteristics
Thomas Hammarström
IEEE Transactions on Instrumentation and Measurement
Journal article
2018
Partial discharge characteristics within motor insulatioi exposed to multi-level PWM waveforms
Thomas Hammarström
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 25 (2), p. 559-567
Journal article
2018
Partial discharges at different voltage waveshapes: Comparison between two different acquisition systems
P. Romano, Thomas Hammarström, Tord Bengtsson et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 25 (2), p. 584-593
Journal article
2018
A Measurement Set-Up Method to Evaluate Motor Winding Quality and Winding Insulation by Exploring Discharge Characteristics
Thomas Hammarström
2018 21st International Conference on Electrical Machines and Systems (ICEMS), p. 678-683
Paper in proceedings
2018
Partial discharge characteristics within motor insulation exposed to multi-level PWM waveforms
Thomas Hammarström
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 25 (Issue 2), p. 559-567
Journal article
2018
Partial discharge characteristics at ultra-short voltage risetimes
Thomas Hammarström
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 25 (6), p. 2241-2249
Journal article
2017
Partial Discharge Characteristics of Electrical Treeing in XLPE Insulation Exposed to Voltages of Different Rise Times
Thomas Hammarström, Tomas Bengtsson, Stanislaw Gubanski
2017 INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATING MATERIALS (ISEIM). Vol. 1-2, p. 407-410
Paper in proceedings
2017
Partial discharge characteristics in motor insulations under exposure to multi-level inverters
Thomas Hammarström, Tord Bengtsson, Stanislaw Gubanski
2017 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENON (CEIDP). Vol. 2017-October, p. 307-310
Paper in proceedings
2016
PD characteristics at Square Shaped Voltages Applying Two Different Detecting
A Madonia, Pietro Romano, Thomas Hammarström et al
IEEE Conference on Electrical Insulation and Dielectric Phenomena 2016
Paper in proceedings
2016
Partial Discharge of Gel Insulated High Voltage Power Modules subjected to Unconventional Voltage Waveforms
A. Madonia, P. Romano, Thomas Hammarström et al
2016 Ieee Conference on Electrical Insulation and Dielectric Phenomena, p. 715-718
Paper in proceedings
2016
PD characteristics at Square Shaped Voltages Applying Two Different Detecting Techniques
A. Madonia, P. Romano, Thomas Hammarström et al
2016 Ieee Conference on Electrical Insulation and Dielectric Phenomena, p. 247-250
Paper in proceedings
2015
Loss Current Studies of Partial Discharge Activity
Xiangdong Xu, Tord Bengtsson, Thomas Hammarström et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 22 (1), p. 472-481
Journal article
2015
Study of Partial Discharge Activity by Excess Current
Xiangdong Xu, Tord Bengtsson, Thomas Hammarström et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 22 (5), p. 3028-3036
Journal article
2014
Partial Discharges in Motor Wires at PWM Voltages of Different Smoothness
Thomas Hammarström, Tord Bengtsson, Jörgen Blennow et al
Proceedings of 2014 International Symposium on Electrical Insulating Materials (ISEIM 2014), June 1-5, 2014, Niigata City, Japan, p. 184-187
Paper in proceedings
2014
Partial Discharge Behavior of a Newly Developed Enamel Insulation at Various Voltage Rise Times
Tuan Anh Hoang, Thomas Hammarström, Tord Bengtsson et al
Proceedings of 2014 International Symposium on Electrical Insulating Materials (ISEIM 2014), June 1-5, 2014, Niigata City, Japan, p. 241-244
Paper in proceedings
2013
Reflections on an Integrated Content and Language Project-Based Design of a Technical Communication Course for Electrical Engineering Students.
Rebecca Bergman, Ann-Marie Eriksson, Jörgen Blennow et al
Journal of Academic Writing. Vol. 3 (1), p. 1-14
Journal article
2013
Stochastic Detection of Partial Discharges
Tord Bengtsson, Elisabeth Lindell, Thomas Hammarström
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 20 (6), p. 2203-2211
Journal article
2013
PARTIAL DISCHARGES IN A STATOR UNDER SYNTHEZISED VOLTAGE WAVEFORMS
Thomas Hammarström, Tord Bengtsson, Jörgen Blennow et al
Proceedings of the 18th International Symposium on High Voltage Engineering 2013 (CD-ROM)
Paper in proceedings
2013
Analysis of Multiple Electrical Trees Incepted at Wire Electrode Test Object by Means of PD Detection
Anette Johansson, Thomas Hammarström, Markus Jarvid et al
Proc. of Jicable HVDC'13 Seminar, p. paper P06-
Paper in proceedings
2013
PD Properties when Varying the Smoothness of Synthesized Waveforms
Thomas Hammarström, Tord Bengtsson, Jörgen Blennow et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 20 (6), p. 2035-2041
Journal article
2011
CHANGES IN PD PROPERTIES WITH DECREASING VOLTAGE RISE
Thomas Hammarström, Tord Bengtsson, Jörgen Blennow et al
The Proceedings of 17th International Symposium on High Voltage Engineering, p. D-013
Paper in proceedings
2011
Resonant PD signal decoupling circuit for rapidly changing voltages
Thomas Hammarström, Tord Bengtsson, Jörgen Blennow et al
22nd Nordic Insulation Symposium (NORDIS 11), June 13-15, Tampere, Finland, p. 149-152
Conference contribution
2011
Evidence for Changing PD Properties at Short Voltage Rise Times
Thomas Hammarström, Tord Bengtsson, Jörgen Blennow et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 18 (5), p. 1686-1692
Journal article
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