https://www.mdu.se/

mdu.sePublications
Change search
Link to record
Permanent link

Direct link
Trosten, Torbjörn
Alternative names
Publications (3 of 3) Show all publications
Trostén, T. (2024). Energy efficient control of motors and inverters. (Licentiate dissertation). Västerås: Mälardalen university
Open this publication in new window or tab >>Energy efficient control of motors and inverters
2024 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The purpose of this licentiate thesis is to research a few key concepts which are important in the development of high efficiency electric drives. The selected research method is quantitative, the raw data have been collected from real world measurements, both from powerlab and from train. The data is analysed and the results are presented in the thesis and associated papers.

The paper in this thesis describes and evaluates the impact of SiC MOSFET inverters on the traction drive. Furthermore, the papers go into depth about losses within the traction drive and how the electromagnetic noise depends on both the inverter switching frequency and pulse width modulation method. In the papers, results from low fidelity models of both losses and noise are presented, these models offer greater insight into the mechanism behind both losses and electromagnetic noise. Understanding how the motor harmonic losses depends on the current distribution in conductors, can contribute to improved designs of both motors and inverters. An understanding of how electromagnetic noise increases when voltage harmonics coincide with the mechanical modes of resonance of the electric motor, can further contribute to improved designs of both inverters and motors.

The thesis concludes that when SiC based MOSFETs inverters makes its debut into everyday trains, we can expect significant increases in energy efficiency as well as significantly reductions in electromagnetic noise.

Place, publisher, year, edition, pages
Västerås: Mälardalen university, 2024
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 351
National Category
Control Engineering
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-64955 (URN)978-91-7485-627-9 (ISBN)
Presentation
2024-01-10, Lambda, Mälardalens universitet, Västerås, 09:00 (English)
Opponent
Supervisors
Available from: 2023-12-11 Created: 2023-12-07 Last updated: 2023-12-20Bibliographically approved
Lindahl, M., Trosten, T., Jansson, D., Johansson, M. H., Velander, E., Blomberg, A. & Nee, H.-P. -. (2021). Field test of a silicon carbide metro propulsion system with reduced losses and acoustic noise. IET Electrical Systems in Transportation, 11(1), 47-57
Open this publication in new window or tab >>Field test of a silicon carbide metro propulsion system with reduced losses and acoustic noise
Show others...
2021 (English)In: IET Electrical Systems in Transportation, ISSN 2042-9738, Vol. 11, no 1, p. 47-57Article in journal (Refereed) Published
Abstract [en]

Results are reported from a successful field test with a silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET) traction inverter. The train has been operated over a 3-month period in the Stockholm metro system. Increased traction inverter power density has been achieved, with volume and weight reductions of 51% and 25%, respectively. Lower power losses permit the use of car motion cooling. A sound pressure level reduction of 9 dB(A) was measured in the field with the higher inverter switching frequency permitted by using SiC. Complementing tests have been performed in the laboratory to compare thermal performance of silicon and SiC in the same power semiconductor housing. Propulsion system power losses are reduced by 19% with SiC. Acoustic noise reductions while increasing switching frequency are also reported. © 2020 The Authors. IET Electrical Systems in Transportation published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.

Place, publisher, year, edition, pages
John Wiley and Sons Inc, 2021
Keywords
Electric inverters, Metals, MOS devices, Oxide semiconductors, Power MOSFET, Propulsion, Semiconducting silicon, Semiconducting silicon compounds, Silicon carbide, Subways, Switching frequency, Wide band gap semiconductors, Inverter switching frequency, Power densities, Power semiconductors, Propulsion system, Silicon carbides (SiC), Sound pressure level reductions, Thermal Performance, Weight reduction, Acoustic noise
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-64974 (URN)10.1049/els2.12004 (DOI)000631562000005 ()2-s2.0-85108907449 (Scopus ID)
Available from: 2023-12-08 Created: 2023-12-08 Last updated: 2024-01-24Bibliographically approved
Trosten, T.Experimental comparison of continuous and discontinuous pulse width modulation on a traction drive considering losses and electromagnetic noise.
Open this publication in new window or tab >>Experimental comparison of continuous and discontinuous pulse width modulation on a traction drive considering losses and electromagnetic noise
(English)Manuscript (preprint) (Other academic)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-64978 (URN)
Available from: 2023-12-11 Created: 2023-12-11 Last updated: 2023-12-11Bibliographically approved
Organisations

Search in DiVA

Show all publications