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http://dx.doi.org/10.4283/JKMS.2017.27.1.009

Calculation of Self and Mutual Inductances in Multi-Phase Permanent Magnet Synchronous Motor  

Lee, Cheewoo (Department of Electrical and Computer Engineering, Pusan National University)
Publication Information
Journal of the Korean Magnetics Society / v.27, no.1, 2017 , pp. 9-17 More about this Journal
Abstract
A multi-phase electric machine has gained distinct interest due to its high reliability compared to a three-phase structure, and in this paper, self and mutual inductances in a five-phase permanent magnet synchronous machine (PMSM) are estimated by an analytical method. Recently, most of high-performance operations are implemented by field oriented control and/or direct torque control, and inductance for those controls is one of the key parameters in the voltage equation of phase windings. Winding function theory (WFT) is employed to calculate the inductance of phase windings, and it is verified that the result of the analytical method has a deviation of approximately 3 % compared to finite element analysis. Finally, in this paper, the way to obtain direct and quadrature inductance values are introduced from the analytical inductance calculated by WFT.
Keywords
multi-phase; permanent magnet synchronous motor; inductance; winding function theory;
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