Linear Active Disturbance Rejection Control of Grid-Connected Photovoltaic Inverter Based on Deviation Control Principle

Zhou, Xuesong; Wang, Jiayao; Ma, Youjie

doi:10.3390/en13153790

Cited by 11 publications

(5 citation statements)

References 25 publications

(37 reference statements)

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“…Theorem 1 (see [35]). Assuming that the lumped disturbance δ a is differentiable and bounded, considering the disturbance-observer (12), there exist the observer gains λ 1.a > 0, λ 2.a > 0, λ 3.a > 0, and 0 < b < 1, such that the observation error can be converged, that is, |x 3.a | ≤ ℓ a .…”

Section: Design Of the Dafsc Controllermentioning

confidence: 99%

“…ere are many types of microgrid, which can be divided into island and grid connected according to whether it is interconnected with the public power grid; according to the current division, it can be divided into DC, AC, and AC\DC hybrid microgrid [9,10]. Because of regional reasons, some DER systems cannot interconnect with the enormous power grid [11,12], and then the DER system is operating in the island mode.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Disturbance-Observer-Based Adaptive Fuzzy Control for Islanded Distributed Energy Resource Systems

Cui

Hua

Dai

et al. 2022

Mathematical Problems in Engineering

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With the aim to improve the antidisturbance ability of the islanded distributed energy resource (DER) systems, a disturbance-observer-based adaptive fuzzy sliding mode control (DAFSC) voltage controller is designed based on indirect vector control, which implements the voltage tracking and improves the self-regulation ability of the islanded DER systems. Firstly, the circuit diagram and the mathematical model of the DER system are presented. Then, the second-order sliding mode differentiator is designed to solve the problem of calculation expansion in the backstepping control method. To solve the influence of lumped disturbance on the system, a disturbance-observer is proposed to observe the unknown disturbance and compensate the controller feed-forward. Moreover, fuzzy control is proposed to reduce the dependence of the control effect on model accuracy. Finally, the stability of the controller is verified by Lyapunov stability theory, and the hardware in the loop results is given to verify that the control effect of the proposed DAFC controller has better dynamic performance compared with proportion-integral (PI) and the backstepping control strategy.

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Section: Design Of the Dafsc Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Disturbance-Observer-Based Adaptive Fuzzy Control for Islanded Distributed Energy Resource Systems

Cui

Hua

Dai

et al. 2022

Mathematical Problems in Engineering

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“…At this time, the adjustment can be realized by increasing the value of β , but this will have a great impact on the performance of ESO, which may cause ESO oscillation and even lead to system instability. 29 Therefore, it is not the best choice to adjust the derivative of z 2 and z 3 . Find an appropriate substitute to replace the deviation e ( t ) to adjust the derivative of z 2 and z 3 .…”

Section: Design Of Improved Adrcmentioning

confidence: 99%

Improved modeling and active disturbance rejection control of tank gun control system

Zheng

Rui

Zhang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part I:

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In order to improve the stability control performance of the tank barrel at high speed, a new 2-degree-of-freedom nonlinear dynamics model of yaw and pitch bodies is established, taking into account the 6-degree-of-freedom motion of the tank chassis. By analyzing the direction of the tank barrel in space, the barrel stability control scheme for the tank gun control system with the arbitrary motion of the tank chassis in space is realized. The new dynamics equations of the tank gun control system are established by analytical mechanics. It effectively solves the problem of modeling methods for the tank gun control system in azimuth and elevation when considering the 6-degree-of-freedom motion of tank chassis. Then, an improved active disturbance rejection control strategy for tank gun control system is proposed. A smooth nonlinear function faln(·) is constructed to avoid the switching problem of the function fal(·) at the piecewise points. Next, an improved extended state observer is designed based on the deviation principle by means of the deviation between each state variable and its observation. Afterwards, the stability of the system is analyzed by constructing a Lyapunov function. Simulations were carried out with different input signals to verify the reliability of the dynamics model and control algorithm. The improved active disturbance rejection control has a faster response speed and smaller steady state error. The results show that the stability and tracking performance of the tank gun control system has been improved using the proposed method.

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“…In this context, and after proving the efficiency of the proposed technique, a modification is proposed to simplify the controller structure by replacing the nonlinear function with a simple error, as introduced in [25]. Indeed, the linearization of the ADRC has been proven to simplify the control loop structure and implementation in different application areas [26,27].…”

Section: Introductionmentioning

confidence: 99%

Active Disturbance Rejection Control for Distributed Energy Resources in Microgrids

Hezzi,

Elbouchikhi,

Bouzid

et al. 2024

Machines

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Motivated by the significant efforts developed by researchers and engineers to improve the economic and technical performance of microgrids (MGs), this paper proposes an Active Disturbance Rejection Control (ADRC) for Distributed Energy Resources (DER) in microgrids. This approach is a nonlinear control that is based on a real-time compensation of different estimated disturbances. The DER operates along with the electrical grid to provide the load requirements. This load has a nonlinear and uncertain character, which presents a source of unmodeled dynamics and harmonic perturbations of the MG. The main objective of this paper is to ensure the stability and the continuity of service of the distributed generation resources by controlling the DC-AC converter. The ADRC as a robust control technique is characterized by its ability to compensate for the estimated total disturbances caused by the load variation and the external unmodeled perturbations to guarantee the high tracking performance of sinusoidal reference signals in the DER system. The ADRC technique is characterized by its nonlinear function, which provides a high robustness to the controlled system. However, in order to simplify the control structure by keeping its high reliability, this paper proposes to replace the nonlinear function with a simple error (termed linear ADRC), compares the impact of this modification on the system performances, and evaluates its operation in the presence of linear and nonlinear load variations. Simulation results are presented to demonstrate the efficiency of the proposed control approach for a three-phase DER.

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Linear Active Disturbance Rejection Control of Grid-Connected Photovoltaic Inverter Based on Deviation Control Principle

Cited by 11 publications

References 25 publications

Disturbance-Observer-Based Adaptive Fuzzy Control for Islanded Distributed Energy Resource Systems

Disturbance-Observer-Based Adaptive Fuzzy Control for Islanded Distributed Energy Resource Systems

Improved modeling and active disturbance rejection control of tank gun control system

Active Disturbance Rejection Control for Distributed Energy Resources in Microgrids

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