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Rail Power Supplies Going More Power Electronic [Technology Leaders]
KTH, Superseded Departments, Solid Mechanics.ORCID iD: 0000-0001-7330-146X
2014 (English)In: IEEE Electrification Magazine, ISSN 2325-5897, Vol. 2, no 3, 6912057Article in journal (Refereed) Published
Abstract [en]

In recent years, interest has risen in using electrified rail operations as an environmentally friendly and efficient way of producing passenger and freight services. New high-speed lines are being designed and built throughout Europe and China, and there is also an increasing interest in high speed rail services in southeast Asia and the United States. To meet this demand, the electrification of railways has rendered increased interest both for new lines and for upgrading existing systems to higher power capacity. Historically, the first rail electrifications were designed as low-voltage dc systems, where the dc voltage was typically generated by dc generators. The limitations in the voltage capability of dc machines and related equipment limited the voltage considerably. More than 100 years later, we still have dc traction systems generated by rectifiers connected to the three-phase grid with voltages in the range of 650 or 750 V up to 3 kV. Because of large voltage drops and excessive losses, it is required that the connecting points to the threephase system are located with a relatively short mutual distance.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2014. Vol. 2, no 3, 6912057
Keyword [en]
DC machinery, Electric railroads, Electric utilities, Rectifying circuits, Connecting points, Existing systems, High-speed rail services, Low-voltage DC systems, Mutual distances, Rail operations, Three phase system, Voltage capability, Railroad transportation
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-201847DOI: 10.1109/MELE.2014.2338971ScopusID: 2-s2.0-84990829202OAI: oai:DiVA.org:kth-201847DiVA: diva2:1080136
Note

QC 20170309

Available from: 2017-03-09 Created: 2017-03-09 Last updated: 2017-03-09Bibliographically approved

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