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

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

Mathematics and Computers in Simulation (MATCOM), 2026, vol. 242, issue C, 148-163

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.

Keywords: Internal permanent magnet synchronous machines; Loss modeling; Newton–Raphson; Optimal reference calculation; Current control (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:242:y:2026:i:c:p:148-163

DOI: 10.1016/j.matcom.2025.10.020

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