A Quadra-Layer Direct Speed SMPC Strategy for PMSM Rotor Position

Wei, Yao; Li, Mengyuan; Wei, Yanjun; Qi, Hanhong

doi:10.1007/978-981-33-6609-1_28

Cited by 1 publication

(2 citation statements)

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“…Due to the divided cost functions, the calculation time is increased because of the calculation of the cost function values and the selection of vectors in each step, and the number of controlled objectives is restricted by the number of vectors of the switching table. This can be solved by adding a group of extra vectors [21].…”

Section: Introductionmentioning

confidence: 99%

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An Advanced Angular Velocity Error Prediction Horizon Self-Tuning Nonlinear Model Predictive Speed Control Strategy for PMSM System

Wei

Sun

et al. 2021

Electronics

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In nonlinear model predictive control (NMPC), higher accuracy can be obtained with a shorter prediction horizon in steady-state, better dynamics can be obtained with a longer prediction horizon in a transient state, and calculation burden is proportional to the prediction horizon which is usually pre-selected as a constant according to dynamics of the system with NMPC. The minimum calculation and prediction accuracy are hard to ensure for all operating states. This can be improved by an online changing prediction horizon. A nonlinear model predictive speed control (NMPSC) with advanced angular velocity error (AAVE) prediction horizon self-tuning method has been proposed in which the prediction horizon is improved as a discrete-time integer variable and can be adjusted during each sampling period. A permanent magnet synchronous motor (PMSM) rotor position control system with the proposed strategy is accomplished. Tracking performances including rotor position Integral of Time-weighted Absolute value of the Error (ITAE), the maximal delay time, and static error are improved about 15.033%, 23.077%, and 10.294% respectively comparing with the conventional NMPSC strategy with a certain prediction horizon. Better disturbance resisting performance, lower weighting factor sensitivities, and higher servo stiffness are achieved. Simulation and experimental results are given to demonstrate the effectiveness and correctness.

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Section: Introductionmentioning

confidence: 99%

“…According to Equation (11), P k+1 should be integral between 1 and N 2 , and the result in (21) should be handled as follow:…”

mentioning

confidence: 99%