2020
DOI: 10.1049/pel2.12058
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An improved permanent‐magnet synchronous machine sensorless drive based on the fuzzy‐PI phase‐locked loop and the adjustable boundary‐layer FOSMO

Abstract: This study proposes a variable boundary-layer full-order sliding-mode observer (FOSMO) with a fuzzy proportional plus integral (PI) phase-locked loop (PLL) for the sensorless control of a permanent-magnet synchronous machine (PMSM). The sigmoid switching function-based FOSMO, which includes feedback speed information, is presented and considered as the conventional method. To address the contradiction between the convergence performance and the chatter-reduction ability of the sliding-mode control, a fuzzy log… Show more

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Cited by 3 publications
(2 citation statements)
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“…Where v E is the electric speed of the motor; ψ f is the permanent magnet flux linkage; L d and L q are the d -axis and q -axis coil inductance respectively, and L d L q = L for surface-mounted PMSM. The transfer function of the current-electromagnetic force transformation in the linear range can be obtained as follows 19 :…”
Section: System Modelingmentioning
confidence: 99%
“…Where v E is the electric speed of the motor; ψ f is the permanent magnet flux linkage; L d and L q are the d -axis and q -axis coil inductance respectively, and L d L q = L for surface-mounted PMSM. The transfer function of the current-electromagnetic force transformation in the linear range can be obtained as follows 19 :…”
Section: System Modelingmentioning
confidence: 99%
“…In [7], a two-degree-of-freedom proportional-integral (PI) controller is proposed to improve inertia disturbance suppression with a disturbance observer. In [8], a real-time parameter tuning module is integrated into the PI regulator of the conventional phase-locked loop (PLL) to adjust its noise bandwidth. These improvements are effective in certain applications, but they still encounter a relatively poor disturbance rejection performance which causes problems in high dynamic applications such as in industrial servo drives.…”
Section: Introductionmentioning
confidence: 99%