Coupled finite-element/state-space modeling of turbogenerators in the ABC frame of reference -- The no-load case
- Clarkson Univ., Potsdam, NY (United States). Electrical and Computer Engineering Dept.
This first of two companion papers centers on applying a coupled finite-element/state-space technique to the determination of self and mutual winding inductances of a 733-MVA turbogenerator and computing its open-circuit characteristic, in the natural ABC frame of reference. In this method, the apparent self anti-mutual inductance profiles of the armature and field windings, expressed as functions of rotor position angle, are computed from a series of magnetic field solutions performed at uniformly-distributed samples of rotor positions covering the entire 360{degree} electrical cycle, using the energy perturbation method. These inductances, which are obtained at no-load for three different excitation levels, include the full effect of space harmonics introduced by the magnetic circuit geometry, winding layouts and magnetic circuit saturation. The ABC-frame/finite-element computed open-circuit characteristic is in excellent agreement with the test results. This computed no-load set of parameters forms the initial data for simulation of the full-load performance given in the companion paper, including the full impact of space harmonics and saturation on the flux linkage, current and voltage waveforms, and other performance parameters.
- OSTI ID:
- 40284
- Report Number(s):
- CONF-940702--
- Journal Information:
- IEEE Transactions on Energy Conversion, Journal Name: IEEE Transactions on Energy Conversion Journal Issue: 1 Vol. 10; ISSN 0885-8969; ISSN ITCNE4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Impact of load on winding inductances of permanent magnet generators with multiple damping circuits using energy perturbation
Determination of synchronous-machine-stability study constants. Final report