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Steady-state and dynamic performance of IPMSM drive taking into account electric powertrain losses

Author

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  • Tóth-Katona, Tamás
  • Stumpf, Dr. Péter
  • Gergely, Dr. Szabó

Abstract

This paper introduces key equations for calculating the operating trajectories of the IPMSM and the electrical losses of the powertrain in steady-state. Based on these equations, the calculation of the so-called dq axis current map and steady-state efficiency map are introduced via a Newton–Raphson based method. The proposed steady-state calculations are validated through a dynamic simulation model with cascaded speed-current closed-loop control. Torque-current reference generation is also performed with the aforementioned Newton–Raphson based method. A clear novelty of this paper is the inclusion of both stator resistance and iron loss resistance in the calculation of reference currents. Additionally, we propose combining this algorithm with a time-variant 2DoF current controller to account for iron losses. The proposed combination improves dynamic behavior and accounts for losses. The steady-state calculations and the dynamic models presented align, proving to be reliable tools for estimating energy consumption and allowing the implementation of accurate reference torque tracking control algorithms.

Suggested Citation

  • Tóth-Katona, Tamás & Stumpf, Dr. Péter & Gergely, Dr. Szabó, 2026. "Steady-state and dynamic performance of IPMSM drive taking into account electric powertrain losses," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 242(C), pages 148-163.
    • Handle: RePEc:eee:matcom:v:242:y:2026:i:c:p:148-163
    DOI: 10.1016/j.matcom.2025.10.020
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    References listed on IDEAS

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