uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Evaluation of different power electronic interfaces for control of a rotating brushless PM exciter
(Hydro Power)
(Hydro Power)
(Hydro Power)
(Hydro Power)
Show others and affiliations
2016 (English)In: Evaluation of different power electronic interfaces for control of a rotating brushless PM exciter / [ed] IEEE Xplore, 2016Conference paper (Refereed)
Abstract [en]

This paper investigates the performance of different power electronic interfaces for a rotating brushless permanent magnet exciter, designed for a synchronous generator test setup. A passive rotating diode bridge is commonly used as the rotating interface in conventional brushless excitation systems. Those systems are known to be slow dynamically, since they cannot control the generator field voltage directly. Including active switching components on the rotating shaft, like thyristors or transistors, brushless excitation systems can be comparable to static excitation systems. Brushless excitation systems has the benefit of less regular maintenance. With permanent magnets on the stator of the designed exciter, the excitation system improves its field forcing capability. Results show that modern power electronic interfaces utilize the exciter machine optimally, increase the power factor, reduce the torque pulsations, maintain the available field winding ceiling voltage and improve the field winding controllability.

Place, publisher, year, edition, pages
2016.
Keyword [en]
power electronic interfaces
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science with specialization in Science of Electricity
Identifiers
URN: urn:nbn:se:uu:diva-292801OAI: oai:DiVA.org:uu-292801DiVA: diva2:926670
Conference
Annual Conference on of the IEEE Industrial Electronics Society 2016 (IECON'16)
Available from: 2016-05-09 Created: 2016-05-09 Last updated: 2016-07-07Bibliographically approved
In thesis
1. Fast-response rotating brushless exciters for improved stability of synchronous generators
Open this publication in new window or tab >>Fast-response rotating brushless exciters for improved stability of synchronous generators
2016 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The Norwegian Network Code FIKS from the Norwegian Transmission System Operator (TSO) Statnett, states that synchronous generators ≥ 25 MVA must have a static excitation system. It also includes requirements on the step time response and the available field winding ceiling voltage of the excitation system. An improved brushless excitation system is in operation in some pilot power plants. A rotating thyristor bridge is controlled via Bluetooth. The step time response is as fast as conventional static excitation systems. However, a ceiling voltage factor of 2 requires the thyristor bridge to operate at firing angles about 60 degrees. High torque pulsations, low power factor and low utilization of the exciter is the end result. New power electronic interfaces on the shaft results in a betterutilization of the designed exciter and improves the mechanical performance as well as the controllability of the generator field winding. Permanent magnet rotating exciters increase the field forcing strength of the synchronous generator, yielding improved transient stability (Fault Ride-Through req.). Brushless exciters also reduces regular maintenance of the generator. The thesis includes experiments on a state of the art synchronous generator test setup including constructed PM exciter and different power electronic solutions. Some investigations has been done on industrial power plants as well.

Place, publisher, year, edition, pages
Uppsala: Institutionen för teknikvetenskaper, 2016
Series
UURIE / Uppsala University, Department of Engineering Sciences, ISSN 0349-8352 ; 347-16L
Keyword
synchronous generators, permanent magnet machines, excitation systems, power electronic interfaces
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science with specialization in Science of Electricity
Identifiers
urn:nbn:se:uu:diva-292835 (URN)
Presentation
2016-06-13, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:00 (English)
Opponent
Supervisors
Available from: 2016-07-07 Created: 2016-05-09 Last updated: 2016-07-07Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Nøland, Jonas Kristiansen
Other Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 161 hits
ReferencesLink to record
Permanent link

Direct link