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Estimation of field current in vector-controlled synchronous machine variable-speed drives employing brushless asynchronous exciters
KTH, School of Electrical Engineering (EES), Electrical Machines and Power Electronics.
2005 (English)In: IEEE transactions on industry applications, ISSN 0093-9994, E-ISSN 1939-9367, Vol. 41, no 3, 834-840 p.Article in journal (Refereed) Published
Abstract [en]

In wound-rotor synchronous machine variable-speed drives, accurate information about the field winding current is paramount to obtain high dynamic and steady-state performance, such as unity power factor. When brushless excitation is employed and no direct measurement of field winding current is available, it must be estimated. This is a topic which has not received much attention in the literature, despite its importance in high-power synchronous motor drives. This paper presents two different methods for field current estimation, applied in a vector-controlled voltage-source converter-fed drive. Experimental results illustrate the steady-state accuracy and dynamic performance.

Place, publisher, year, edition, pages
2005. Vol. 41, no 3, 834-840 p.
Keyword [en]
brushless excitation, field current estimation, variable-speed drives
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-42569DOI: 10.1109/TIA.2005.847290ISI: 000229684900022ScopusID: 2-s2.0-20544451842OAI: diva2:447204
QC 20111011Available from: 2011-10-11 Created: 2011-10-11 Last updated: 2011-10-11Bibliographically approved

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