Distributed steady state nonlinear modeling of turboalternators

• Published in: IEEE transactions on energy conversion Vol. 15; no. 3; pp. 233 - 239
• Main Authors: Awad, M.L., Slemon, G.R., Iravani, M.R.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-09-2000; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Finite element methods; Magnetic analysis; Magnetic saturation; Predictive models; Rotors; Saturation magnetization; Stator cores; Steady-state; Synchronous machines; Teeth; Turbogenerators
• ISSN: 0885-8969; 1558-0059
• DOI: 10.1109/60.875486

This paper presents an alternate approach for modeling of steady state performance of large turboalternators including the effects of magnetic saturation. To avoid the superposition limitations of the conventional d-q approach, a sectoral model of a pole of the machine is developed and solved iteratively. The computational effort is orders of magnitude less than for a finite element solution. Results from the proposed model are compared with those from a conventional d-q model and with measurements made for a wide range of load conditions on a 588-MVA turbogenerator.