Adaptive Second-Order Sliding-Mode Observer for PMSM Sensorless Control Considering VSI Nonlinearity

Dian-nong, Liang; Li, Jian; Qu, Ronghai; Kong, Wubin

doi:10.1109/tpel.2017.2783920

Cited by 319 publications

(117 citation statements)

References 35 publications

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“…Unlike the decoupled-analyzing method in FOC, torque and flux linkage are controlled directly in DTC, therefore, the quickest dynamic response can be obtained in the PMSM driven by DTC [14][15][16]. However, as only six active vectors can be selected to compensate the errors of flux linkage and torque in conventional DTC, the PMSM suffers from some drawbacks, such as large torque and flux linkage ripples [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Servo Control System Driven by Novel PMSM-DTC Based On Fixed Sector Division Criterion

et al. 2019

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In order to improve the performance of the servo control system driven by a permanent magnet synchronous motor (PMSM) under novel direct torque control (NDTC), which, utilizing composite active vectors, fixed sector division criterion, is proposed in this paper. The precondition of the accurate compensations of torque and flux errors is that the sector where the stator flux linkage is located can be determined accurately. Consequently, the adaptive sector division criterion is adopted in NDTC. However, the computation burden is inevitably increased with the using of the adaptive part. On the other hand, the main errors can be compensated through SV-DTC (DTC-utilizing single active vector), while another active vector applied in NDTC can only supply the auxiliary error compensation. The relationships of the two active vectors' characteristics in NDTC are analyzed in this paper based on the active factor. Furthermore, the fixed sector division criterion is proposed for NDTC (FS-NDTC), which can classify the complexity of the control system. Additionally, the switching table for the selections of the two active vectors is designed. The effectiveness of the proposed FS-NDTC is verified through the experimental results on a 100-W PMSM drive system.

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Section: Introductionmentioning

confidence: 99%

Performance Improvement of Servo Control System Driven by Novel PMSM-DTC Based On Fixed Sector Division Criterion

et al. 2019

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“…The study in [30] proposed sensorless control of PMSM with rotor position estimation based on tangent function-based phase-locked loop (PLL) structure and improved SMO with adaptive feedback gain related to the rotor speed. An SMO based on adaptive super-twisting algorithm was proposed in [31] for rotor position estimation of surface-mounted permanent magnet synchronous machine (SPMSM) and applied for sensorless control with compensation of voltage source inverter nonlinearity. The research conducted in [32] proposed sensorless control of IPMSM based on an SMO which utilized PLL technique and fuzzy control adjustment of sliding mode gain in order to reduce chattering and increase the observer robustness.…”

Section: Introductionmentioning

confidence: 99%

Sliding Mode Observer-Based Load Angle Estimation for Salient-Pole Wound Rotor Synchronous Generators

Lopac

Bulić

Vrkic³

2019

Energies

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Synchronous generator load angle is a fundamental quantity for power system stability assessment, with possible real-time applications in protection and excitation control systems. Commonly used methods of load angle determination require additional measuring equipment, while existing research on load angle estimation for wound rotor synchronous generator has been limited to the estimator based on the generator’s phasor diagram and estimators based on artificial neural networks. In this paper, a load angle estimator for salient-pole wound rotor synchronous generator, based on a simple sliding mode observer (SMO) which utilizes field current, stator voltages, and stator currents measurements, is proposed. The conventional SMO structure is improved with use of hyperbolic tangent sigmoid functions, implementation of the second order low-pass filters accompanied with corresponding phase delay compensation, and introduction of an adaptive observer gain proportional to the measured field current value. Several case studies conducted on a generator connected to a power system suggest that the proposed estimator provides an adequate accuracy during active and reactive power disturbances during stable generator operation, outperforming the classical phasor diagram-based estimator by reducing mean squared error by up to 14.10%, mean absolute error by up to 41.55%, and maximum absolute error by up to 8.81%.

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“…In [27,28], online parameters identifications were used to improve the estimate robustness. In [29][30][31], nonlinearity compensations were applied to reduce the estimated error. Adaptive filters were designed to filter out the undesired harmonic components in back EMF by analyzing the harmonic distribution of position estimated error, such as adaptive notch filter (ANF) [11], synchronous frequency extract filters (SFFs) [32], adaptive linear neural (ADALINE) filter [33], adaptive vector filter (AVF) [34], and so on.…”

mentioning

confidence: 99%

An Improved Sensorless Vector Control Method for IPMSM Drive with Small DC-Link Capacitors

Yin

Luo

et al. 2020

Energies

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In this paper, an improved sensorless vector control method for an interior permanent magnet synchronous motor (IPMSM) drive with small DC-link capacitors is proposed. First, a fast sliding-mode observer was applied, to enlarge the observer bandwidth. Then, an improved estimator based on a proportional integral resonant controller was designed for the estimate speed shaping, which means the actual speed can be tracked. This not only reduces the position estimate error, but also enhances the grid power factor and suppresses the input current harmonics. Simulation and experiments were conducted on a sensorless IPMSM drive system with a small film capacitor. The effectiveness of the proposed estimation method was verified by the simulation and experimental results. The estimated error was reduced and the grid current harmonics satisfy the requirements of EN61000-3-2.

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Adaptive Second-Order Sliding-Mode Observer for PMSM Sensorless Control Considering VSI Nonlinearity

Cited by 319 publications

References 35 publications

Performance Improvement of Servo Control System Driven by Novel PMSM-DTC Based On Fixed Sector Division Criterion

Performance Improvement of Servo Control System Driven by Novel PMSM-DTC Based On Fixed Sector Division Criterion

Sliding Mode Observer-Based Load Angle Estimation for Salient-Pole Wound Rotor Synchronous Generators

An Improved Sensorless Vector Control Method for IPMSM Drive with Small DC-Link Capacitors

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