An Acceleration Method for AC Steady State Performance of Dual Three-Phase Machine: Modeling and Implementation

Publication Type:
Conference Proceeding
2021 13th International Symposium on Linear Drives for Industry Applications (LDIA), 2021, 00, pp. 1-6
Issue Date:
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This paper proposes a method to shorten the length of transient response time-stepping finite element analysis (TSFEA) of the dual three-phase permanent magnet synchronous machine (PMSM). Firstly, the initial magnetic potential and stator winding current under steady-state operation conditions in the TSFEA are estimated using time-harmonic finite element analysis (THFEA). Then the achieved relevant values extracted from the real and imaginary part in the time-harmonic solver are injected into a proposed zero-state govern equation called the “zero-state initial solver”, which gives the closer-fitting of initial permeabilities, magnetic potential, and stator winding current in the time domain. Finally, the upper achieved values are transferred into the TSFEA as the initial condition for the following computation. With the well-precalculated solution, the required AC cycles of the steady-state can be effectively reduced, while the computing time of the central processing unit (CPU) is also substantially decreased. The effectiveness and accuracy of the proposed method are verified by comparing it with the conventional methods in a TSFEA of an 6-kW dual three-phase PMSM.
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