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The Fractional Slot Concentrated Winding (FSCW) configuration increases spatial harmonics of the magneto motive force (MMF) waveform of an electric machine. Therefore, saturation level in such machines is typically higher than that of the conventional machines with distributed windings. Since the characteristic of Interior Permanent Magnet (IPM) machine principally depends on inductances variation,...
In this paper a design approach for a sensorless controlled, brushless, interior permanent magnet machine is attained. An initial study based on established electrical machine formulas provides the machine's basic geometrical sizing. The next design stage combines a particle swarm optimisation (PSO) search routine with a magneto-static finite element (FE) solver to provide a more in depth optimisation...
This paper is dedicated to exploring real-time parameter identification approaches and their integration with deadbeat-direct torque and flux control (DB-DTFC) without additional torque ripple. By using the voltage model, at medium and high speed ranges DB-DTFC is insensitive to parameters. Performance degrades at low speeds with the rotor time constant errors because the current model is utilized...
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