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A Fuzzy-PID Controller for the compensation of the Direct-axis current component in the flux-weakening control system of the Permanent Magnet Synchronous Motor (PMSM) is proposed in this paper. The output torque of PMSM falls down when it operates in the high-speed as the reason of its parameters variation. In order to minimize the influences from the armature reaction, the quadrature-axis current...
Torque ripples exist in permanent magnet synchronous motors (PMSMs) mainly due to non-sinusoidal flux density distribution around the air-gap. These torque ripples vary periodically with rotor position and are reflected as speed ripple, which degrades the PMSM drive performance, particularly at low speeds. In this paper, a simple expression based on the harmonic compensation technique and Fourier...
The resolver is mainly used to obtain position information when driving the permanent magnet synchronous motor (PMSM). A resolver generates periodic position errors owing to the transformer ratio difference and excitation signal distortion. When the vector control is done with the position information that includes position error, torque ripple is periodically generated. An algorithm is proposed that...
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