2018
DOI: 10.5604/01.3001.0012.0695
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Transient Modeling of Ac Machines Considering Second Order Effects

Abstract: In this paper, the transient simulation of AC machines considering spatial field harmonics and current displacement in rotor bars is examined. The first point of discussion is the sufficient order of the equivalent circuit of the current displacement model for its accurate co-simulation with the higher spatial field harmonics. In the second place, the problem of inversion of the inductance matrix considering the flux linkage through higher spatial harmonics is studied.

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Cited by 2 publications
(2 citation statements)
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“…At the same time, due to the frequent lack of necessary data, and accurate data-even more so, there is no confidence that the obtained solution can claim an engineering accuracy of 2% to 3%. Such situation leads to search of approximation solutions not within the limits of physical effects [21], [25], [26], but to use of numerical optimization procedures [27], "fitting" the curve ω=f(T) to motor data from a nameplate (shield) and from catalogs (rated, or nominal data, and critical and starting torque). At the same time, according to the information from the developer of the quite successful program [27], the convergence of the optimization procedure was not ensured for every sixth engine (out of 300 double-cage machines processed).…”
Section: Introductionmentioning
confidence: 99%
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“…At the same time, due to the frequent lack of necessary data, and accurate data-even more so, there is no confidence that the obtained solution can claim an engineering accuracy of 2% to 3%. Such situation leads to search of approximation solutions not within the limits of physical effects [21], [25], [26], but to use of numerical optimization procedures [27], "fitting" the curve ω=f(T) to motor data from a nameplate (shield) and from catalogs (rated, or nominal data, and critical and starting torque). At the same time, according to the information from the developer of the quite successful program [27], the convergence of the optimization procedure was not ensured for every sixth engine (out of 300 double-cage machines processed).…”
Section: Introductionmentioning
confidence: 99%
“…Equivalent circuits of IM with two branches on the rotor and the steel loss circuit [22] Figure 7. Equivalent circuit for modeling of the current displacement effect in the rotor bars [25], [26] Figure 8. IM, Г-circuit with equivalent iron loss resistor [15] ISSN: 2088-8708  Figure 9.…”
Section: Introductionmentioning
confidence: 99%