Disturbance Observer-Based Model Predictive Super-Twisting Control for Soft Open Point

Wang, Zheng-Qi; Zhou, Haoyu; Su, Hongyu

doi:10.3390/en15103657

Cited by 4 publications

(3 citation statements)

References 38 publications

(38 reference statements)

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“…The V/f mode operates where a port needs to be switched to a fixed AC-voltage mode to supply power to the fault area load. In this paper, port1 uses U dc Q mode, and port2 uses PQ mode (Wang et al, 2022). From (4), it is clear that:…”

Section: Mathematical Models Of Soft Open Pointmentioning

confidence: 99%

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Extended state observer-based predictive control for soft open point

Wang

Lu²,

Zhou³

et al. 2023

Front. Energy Res.

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This paper proposes an extended state observer-based ultra-local model-free three-vector predictive control method for Soft Open Point (SOP). First, the Ultra-Local Model-Free Predictive Control (ULMFPC) method is proposed to improve the robustness of the system, which only uses the input and output of the outer-loop, and any other parameters are not involved. Second, considering parameter perturbations and external disturbances in the SOP system, an expansion state observer (ESO) is established to observe the SOP system’s total perturbations and the perturbations are compensated in real-time to improve the system. Third, to solve the problem of significant current harmonics in traditional model predictive control (MPC), a three-vector MPC method (TV-MPC) is adopted to reduce the total harmonic distortion rate (THD) of the current. Finally, it is verified by simulation that the proposed method can effectively reduce the current harmonics of the SOP system, rate value setting time, and improve the dynamic performance effectively. When perturbations occur in the system, the proposed method can improve the anti-interference and robustness of the system.

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Section: Mathematical Models Of Soft Open Pointmentioning

confidence: 99%

“…Where f 0 , f 1 , and f 2 are the corresponding cost function Eq. 31 values of u 0opt , u 1opt , and u 2opt (Wang et al, 2022). The two ports of the SOP have similar action times, and the voltage combination and action times are output to both sides of the SOP for the control of the whole system.…”

Section: Action Time Calculationmentioning

confidence: 99%

Extended state observer-based predictive control for soft open point

Wang

Lu²,

Zhou³

et al. 2023

Front. Energy Res.

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“…Nevertheless, the full-order fast terminal SMC used in the inner loop requires high model accuracy, is sensitive to measurement errors, and is prone to cause instability in the controller's performance. Another paper [24] proposed an ST sliding-mode observer to improve the immunity of an FMSS system, and applied the conventional ST-SMC to design a voltage outer-loop controller to enhance its dynamic performance and robustness. However, the inner loop was poorly controlled using three-vector MPC, which requires high system data accuracy and complex computation.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Quasi-Super-Twisting Sliding Mode Control for Flexible Multistate Switch

Ma,

Wang,

Wang

et al. 2024

Energies

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The mathematical model of a flexible multistate switch (FMSS) exhibits nonlinear and strong coupling characteristics, whereas traditional power decoupling control makes it difficult to completely decouple the output power. The traditional proportional–integral control parameters are difficult to adjust, and their robustness and dynamic performance are poor, which affects the stability of the voltage of the power distribution network and feeder power. To address these problems, this study first converted the original system into a linear system via coordinate transformation using feedback-accurate linearization to decouple active and reactive currents. Thereafter, a super-twisting sliding mode control (ST-SMC) algorithm was introduced, and an adaptive quasi-super-twisting sliding mode control (AQST-SMC) algorithm comprising the quasi-sliding mode function and adaptive proportional term was proposed. An FMSS double closed-loop controller was designed to achieve improved vibration suppression and convergence speed. A three-port FMSS simulation model was developed using MATLAB/Simulink, and the simulation results show that the proposed control strategy enhances the robustness and dynamic performance of the system.

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Disturbance Observer Based Model Predictive Control for Soft Open Point

Zhou,

Fei,

et al. 2024

2024 IEEE 7th International Electrical and Energy Conference (CIEEC)

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Disturbance Observer-Based Model Predictive Super-Twisting Control for Soft Open Point

Cited by 4 publications

References 38 publications

Extended state observer-based predictive control for soft open point

Extended state observer-based predictive control for soft open point

Adaptive Quasi-Super-Twisting Sliding Mode Control for Flexible Multistate Switch

Disturbance Observer Based Model Predictive Control for Soft Open Point

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