A Sliding Mode Control Strategy with Repetitive Sliding Surface for Shunt Active Power Filter with an LCLCL Filter

Gao, Yunguang; Li, Xiaofan; Zhang, Wenjie; Hou, Dianchao; Zheng, Ling

doi:10.3390/en13071740

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…Classical controllers, such as the proportional-integral (PI) controller, may not be optimal for all power electronics applications [31], especially when nonlinear systems require strict precision and dynamic characteristics. Nonlinear and intelligent strategies, such as the sliding mode controller (SMC) [32,33], backstepping controller (BC) [34], and high-order SMC techniques [35][36][37][38][39], have been effective in reducing current ripples and improving the power quality, but can be complex and difficult to apply. Fractional-order PI controllers (FOPI) have emerged as viable alternatives due to their extra design parameters and simplicity [40].…”

Section: Introductionmentioning

confidence: 99%

A New Control for Improving the Power Quality Generated by a Three-Level T-Type Inverter

et al. 2023

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A new controller based on a fractional-order synergetic controller (FOSC) is proposed for a three-level T-type inverter using a shunt active power filter (SAPF). The SAPF is designed to compensate for the reactive power and eliminate the current harmonics caused by non-linear loads, in cases of distorted or unbalanced source voltages. The proposed FOSC technique with the designed parameters and defined macro-variable is a robust control technique that operates well in both transient and steady-state scenarios, ensuring fast convergence and closed-loop system stability. The FOSC technique utilizes a phase-locked loop (PLL) technique on a self-tuning filter (STF) to enhance the SAPF’s ability to compensate current harmonics and reactive power in all situations involving non-linear loads and source voltage variations according to IEEE Std. 519. The proposed control was implemented and verified using Matlab software, where the obtained results were compared with the results of the conventional control based on proportional-integral (PI) controllers in different operating conditions. The results indicate that the proposed FOSC technique outperformed the traditional control in terms of DC voltage tracking and the minimization of the total harmonic distortion of the current.

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Section: Introductionmentioning

confidence: 99%

A New Control for Improving the Power Quality Generated by a Three-Level T-Type Inverter

et al. 2023

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“…The L-series/VSI structure requires heavy, bulky, expensive, and difficult to size output inductances [ 1 ]. However, LC, LCL, and LCLCL output filters provide, in comparison with first-order filters, higher attenuation of high-frequency components and a weight and size reduction of the passive components [ 2 , 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Sensor Effects in LCL-Type Grid-Connected Shunt Active Filters Control Using Higher-Order Sliding Mode Control Techniques

Alali

Shtessel

Barbot

et al. 2022

Sensors

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The effects of measuring devices/sensors on improving the power quality (PQ) of electric networks are studied in this paper. In this context, improving the performance of an LCL-type grid connected to a three-phase three-wire shunt active filter (SAF) in the presence of voltage perturbations is studied. In order to ensure the high-quality performance of LCL-SAF in the presence of voltage perturbations, the robust continuous second-order sliding mode controller (2-SMC), including twisting and super-twisting controllers, and continuous higher-order sliding mode controller (C-HOSMC)-based approaches are employed. These controllers, whose outputs are processed by pulse-width modulation (PWM), allow minimization of the phase shift and prevent the generation of discontinuous chattering commands, which can severely damage the VSI components. Moreover, an integration of a generalized instantaneous power identification algorithm with an advanced phase locked loop (PLL) was proposed and experimentally tested to validate the effective performances of SAF under severe perturbations. Additionally, the studied approaches were tested via simulations taking into account a conventional nonlinear industrial load in a real textile factory environment, using measurements provided by power quality analyzers. Finally, the effects of the measuring devices, including the current and voltage sensors, on the accuracy and reliability of the SAF and, consequently, on the PQ of the electric power grid were studied via simulations and experimentally. The results of this study support the validity of the recently published patent.

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“…However, the exact design of boundary layer is limited this suggestion. In [9], a modified SMC current controller is proposed for shunt active power filters (SAPF). In order to improve SAPF robustness, an exponential reaching law is employed and to reduce the chattering phenomenon, a repetitive control (RC) term of harmonic current error is introduced to the sliding mode surface.…”

Section: Introductionmentioning

confidence: 99%

Robust model reference adaptive PI controller based sliding mode control for three-phase grid connected photovoltaic inverter

Moeti¹,

Asadi²

2021

Turk J Elec Eng & Comp Sci

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In this paper, the design of a new robust model reference adaptive PI (MRAC-PI) current controller is proposed for a two stage grid connected photovoltaic (PV) inverter. Perturb & observe (P&O) algorithm is implemented in the boost part in order to extract the maximum power from the PV array. Firstly, the current dynamics with considering the system uncertainties are written in dq frame and are simplified by employing a decoupling system. Then, the MRAC-PI controller is designed based on a sliding mode control (SMC) to improve the robustness of the controller under system uncertainties. The parameters of PI controller are tuned based on SMC laws to tracks the desired reference model and provides fast and desirable dynamic response. The stability of the robust MRAC-PI is proven by using Lyapunov's theory and Barbalet's lemma. Finally, the performance of the proposed current controller and the conventional PI based voltage oriented control (VOC) during variations in filter inductance and solar irradiance are compared through simulation results. These results show the effectiveness of the proposed controller.

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A Sliding Mode Control Strategy with Repetitive Sliding Surface for Shunt Active Power Filter with an LCLCL Filter

Cited by 9 publications

References 22 publications

A New Control for Improving the Power Quality Generated by a Three-Level T-Type Inverter

A New Control for Improving the Power Quality Generated by a Three-Level T-Type Inverter

Sensor Effects in LCL-Type Grid-Connected Shunt Active Filters Control Using Higher-Order Sliding Mode Control Techniques

Robust model reference adaptive PI controller based sliding mode control for three-phase grid connected photovoltaic inverter

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