Thomas Hammarström
Lecturer at
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 36 publications
2020
Electrical Characterization of a New Crosslinked Copolymer Blend for DC Cable Insulation
Sarath Kumara, Xiangdong Xu, Thomas Hammarström et al
Energies. Vol. 13 (6), p. 1434-1449
Journal article
2020
Multi-rise time PWM: A way to reduce PD exposure in motor windings
Thomas Hammarström
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 27 (2), p. 613-621
Journal article
2019
The Effect of the Harmonic Content Generated by AC/DC Modular Multilevel Converters on HVDC Cable Systems
P. Romano, A. Imburgia, Yuriy Serdyuk et al
Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP, p. 666-669
Paper in proceedings
2019
The Implications on the PD Characteristics of Unipolar versus Bipolar PWM waveforms
Thomas Hammarström
2019 IEEE Electrical Insulation Conference, EIC 2019, p. 42-45
Paper in proceedings
2019
Multilevel PWM: A Tool to Explore Insulation PD Characteristics
Thomas Hammarström
IEEE Transactions on Instrumentation and Measurement. Vol. 68 (10), p. 4075-4084
Journal article
2019
Partial Discharge Characteristics of Electrical Treeing in XLPE insulation utilizing Multi Level PWM Waveforms
Thomas Hammarström
Paper in proceedings
2019
Partial discharge characteristics of electrical treeing in XLPE insulation exposed to voltages of different rise times
Thomas Hammarström, Tord Bengtsson, Stanislaw Gubanski
IEEJ Transactions on Fundamentals and Materials. Vol. 139 (2), p. 85-91
Journal article
2019
The Implications of varios PWM shaped contributions Superimposed on DC Bias Voltages
Thomas Hammarström
Paper in proceedings
2019
Partial discharge classification in power electronics applications using machine learning
Ebrahim Balouji, Thomas Hammarström, Tomas McKelvey
GlobalSIP 2019 - 7th IEEE Global Conference on Signal and Information Processing, Proceedings
Paper in proceedings
2019
Deformation of bubbles in silicon gel insulation under an alternating electric field
G. Rizzo, P. Romano, G. Ala et al
Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP, p. 536-539
Paper in proceedings
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
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 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
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
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.
Becky 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
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
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
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
Download publicaton list
You can download this list to your computer.
Filter and download publication list
As logged in user (Chalmers employee) you find more export functions in MyResearch.
You may also import these directly to Zotero or Mendeley by using a browser plugin. These are found herer:
Showing 4 research projects
2020–
Activities within materials and diagnostics for high-voltage networks
Yuriy Serdyuk
Power grids and Components
Thomas Hammarström
Power grids and Components
Sarath Kumara
Power grids and Components
Chalmers
2019–2020
Advanced characterization of new insulation materials for next generation of HVDC power cables
Thomas Hammarström
Power grids and Components
Christian Müller
Christian Müller Group
Roland Kádár
Engineering Materials
Yuriy Serdyuk
Power grids and Components
Aleksandar Matic
Condensed Matter Physics
Yingwei Ouyang
Christian Müller Group
Chalmers
2018–
Mechanisms of partial discharges in polymeric HVDC power cables
Yuriy Serdyuk
Power grids and Components
Thomas Hammarström
Power grids and Components
Chalmers
2017–2021
Power Electronic based dc transformer for off-shore wind energy installations
Torbjörn Thiringer
Electric Power Engineering
Babak Alikhanzadehalamdari
Electrical Machines and Power Electronics
Thomas Hammarström
Power grids and Components
Swedish Energy Agency
There might be more projects where Thomas Hammarström participates, but you have to be logged in as a Chalmers employee to see them.