Technical gazette, Vol. 19 No. 4, 2012.
Original scientific paper
Application of fuzzy logic for reactive power compensation by synchronous motors with variable load
Marinko Stojkov
orcid.org/0000-0003-1727-1766
; J. J. Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, Ivana Brlic Mazuranic Square 2, 35000 Slavonski Brod, Croatia
Mirza Atić
orcid.org/0000-0002-6581-4895
; Gealan d.o.o., M. Maka Dizdara B-9, BA-75000 Tuzla, Bosnia and Herzegovina
Amir Softić
; JP EP BiH, ED Tuzla, BA-75000 Tuzla, Bosnia and Herzegovina
Abstract
Synchronous motors which are over-excited in the branched radial network, to which a large number of high-voltage asynchronous motors and transformer stations are connected, can operate as synchronous compensators. By adjusting the excitation current on the rotor, synchronous motors can be supplied by appropriate active power P ≈ Pr = const. from the network, and send reactive power back to the network Q = f (Ie) and thus improve the power factor. The adjustment of synchronous motor excitation current depends on the load, and it is necessary to analyze the load by measuring electrical quantities of a synchronous motor with variable load. This paper presents an analysis of synchronous motor loads, using fuzzy c-clustering method. A classification of load groups has been designed and the maximum load for certain working conditions has been determined as well as currents of excitation circuit in the given conditions.
Keywords
synchronous motor; excitation current; fuzzy c-clustering method
Hrčak ID:
93526
URI
Publication date:
12.12.2012.
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