On determination of inductances for circuit models of AC machines

• Autorzy: Sobczyk T. J.
• Języki publikacji: EN

Abstrakty

EN

The paper discuss a problem of determination of inductances for AC machine windings when saturation of magnetic circuit is not neglected. For such cases, computation of magnetic field distribution in the machine magnetic circuit is a starting point for post processing procedures leading to various values, among others the co-energy in a given area and linkage fluxes of windings. This paper shows how to determine winding inductances in a nonlinear magnetic circuit from these two values and also how to compute directly nonlinear inductances. Problem is not trivial because such inductances are not uniquely determined as for linear case. In the paper a definition of nonlinear inductances is proposed which makes the choice unique.

Słowa kluczowe

EN

electric machines; modelling magnetic non-linearity; dynamic inductances; non-linear inductances

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2013
• Tom: Vol. 62, nr 3
• Strony: 487--496
• Opis fizyczny: Bibliogr. 10 poz., wz.

Twórcy

autor

Sobczyk T. J.

• Institute on Electromechanical Energy Conversion Cracow University of Technology Warszawska 24, 31-155 Kraków, Poland

Bibliografia

• [1] White D.C., Woodson H.H., Electromechanical Energy Conversion. John Wiley & Sons, New York (1959).
• [2] Sobczyk T.J., An Energy-Based Approach to Modelling the Magnetic Non-Linearity in AC Machines,Part I - General Formulas for the Co-energy, Linkage Fluxes and Inductances. Archives of Electrical Engineering 48(1-2): 219-229 (1999).
• [3] Demerdash N.A., Nehl T.W., Electric Machinery Parameters and Torques by Current and EnergyPerturbations from Field Computations - Part I: Theory and Formulation. IEEE Trans. on Energy Conversion 14(4): 1507-1513 (1999).
• [4] Demenko A., Nowak L., Pietrowski W., Calculation of Magnetization Characteristic of a SquirrelCage Machine Using Edge Element Method. COMPEL, James & James Science Pub. 23(4): 1110-1118 (2004).
• [5] Sobczyk T.J., Methodological Aspects of Mathematical Modelling of Induction Machines., WNT, Warsaw (2004) (in Polish).
• [6] El Serafi A.M., Kar N.C., Methods for Determining the Intermediate-Axis Saturation Characteristicsof Salient-Pole Synchronous Machines from the Measurement D-axis Characteristics. IEEE Transactions on Energy Conversion 20(1): 88-97 (2005).
• [7] Kudła J., Mathematical Models of AC Machines Accounting for Saturation. Silesian University of Technology, Gliwice (2005) (in Polish).
• [8] Demenko A., Nowak L., Pietrowski W., Mikołajewicz J., Determination of Induction Machine MainInductance at Saturated Magnetic Circuit Using Edge Element Method. Przegląd Elektrotechniczny 85(6): 13-16 (2009) (in Polish).
• [9] Warzecha A., Multidimensional Magnetising Characteristics for Circuit Models of ElectricalMachines. Cracow University of Technology, Monograph (381), Series of Electrical & Computer Eng. (2010) (in Polish).
• [10] Sobczyk T.J., Application of Higher Order Forms for Description of Electromechanical EnergyConverters. Archives of Electrical Engineering 60(1): 67-75 (2011).