Estimation of field current in vector-controlled synchronous machine variable-speed drives employing brushless asynchronous exciters
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
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.
brushless excitation, field current estimation, variable-speed drives
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-42569DOI: 10.1109/TIA.2005.847290ISI: 000229684900022ScopusID: 2-s2.0-20544451842OAI: oai:DiVA.org:kth-42569DiVA: diva2:447204
QC 201110112011-10-112011-10-112011-10-11Bibliographically approved