Robust Resonant Controllers for Distributed Energy Resources in Microgrids

Bouzid, Allal El Moubarek; Zerrougui, Mohamed; Elghali, Seifeddine Ben; Beddiar, Karim; Benbouzid, Mohamed

doi:10.3390/app10248905

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…The proposed controller is used for one distributed generator in order to improve voltage waveform, system stability, disturbance rejection (i.e., rejection capability to switch harmonics and harmonics caused by nonlinear loads), dynamic performances, and robustness under parameter uncertainty. Given the critical importance of the loads, international standards (ANSI/IEEE, 1986; IEC, 2011) [38,39] govern the performance of Distributed Energy Resources (DER), establishing criteria for both transient and steady-state operations. In transient conditions, adherence to standards necessitates minimal fluctuations in the output voltage amplitude and swift recovery times when loads are introduced or removed from the system.…”

Section: Simulation Resultsmentioning

confidence: 99%

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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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Section: Simulation Resultsmentioning

confidence: 99%

“…Simulation parameters are provided in Tables 1 and 2 [39]. The desired DER output voltage is a sine wave signal with a nominal frequency of 60 Hz and an RMS value equal to 127 V. The performance assessment of the proposed control structure is carried out using Matla/Simulink platform.…”

Section: Simulation Resultsmentioning

confidence: 99%

Active Disturbance Rejection Control for Distributed Energy Resources in Microgrids

Hezzi,

Elbouchikhi,

Bouzid

et al. 2024

Machines

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“…Bouzid et al in [6], addressed the issues of microgrids stability and performance optimization for different types of loads, including the problem of harmonic cancellation and output voltage disturbance mitigation of distributed generation resource systems caused by nonlinear loads. In this context, robust proportional-resonant controllers with a harmonics compensator based on the internal model principle have been proposed.…”

Section: Special Issue Contributionsmentioning

confidence: 99%

Special Issue on Microgrids/Nanogrids Implementation, Planning, and Operation

2022

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“…The continuous-time transfer function of an ideal resonant controller is G res (s) = s 2 s 2 +ω 2 , where ω is the frequency of the sinusoidal reference to be tracked. The poles of G res (s), ±jω equal the poles of the Laplace transform of a sinusoidal signal [23]. As a result, a resonant converter satisfies the requirements of IMP.…”

Section: Introductionmentioning

confidence: 98%

“…The poles of this new controller, called a quasi-resonant controller, are −ε ± √ ε 2 − ω 2 , which are different from those of the Laplace transform of a sinusoidal signal. Hence, quasi-resonant controllers have a steady-state tracking error as these controllers do not satisfy the requirements of IMP [23].…”

Section: Introductionmentioning

confidence: 99%

Variable Frequency Resonant Controller Based on Generalized Predictive Control for Biased-Sinusoidal Reference Tracking and Multi-Layer Perceptron

Cordero,

Gonzales,

Estrabis

et al. 2024

Energies

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Resonant controllers are widely used in power electronics to track sinusoidal references. According to the internal model principle (IMP), these controllers should embed the poles of the Laplace or Z transform of the reference for the closed-loop system to track the reference asymptotically. Thus, tracking a sinusoidal reference is difficult as the controller should adapt its structure to embed the poles of the sinusoidal reference with variable frequency, as those poles depend on that variable frequency. On the other hand, Generalized Predictive Control (GPC) is widespread in industry applications due to its fast response, robustness and capability to include constraints. Resonant controllers based on GPC, which satisfy IMP, have been developed. However, these controllers consider the sinusoidal frequency to be constant. This paper presents a new GPC-based resonant controller with an adaptive and simple control law to track references with variable frequencies. A PLL estimates the frequency of the reference. A multi-layer perceptron uses the estimated frequency to define the gain matrix required to calculate the GPC control action. The GPC control action and the estimated frequency define the control law, which satisfies IMP in steady-state conditions. The authors did not find in the literature the proposed mathematical development of an adaptive GPC resonant controller with a discrete-time augmented model whose control law satisfies IMP. Thus, the proposed approach is helpful to develop other adaptive predictive controllers. Experimental results show that the proposed controller can track sinusoidal references whose frequencies vary in time.

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Robust Resonant Controllers for Distributed Energy Resources in Microgrids

Cited by 7 publications

References 28 publications

Active Disturbance Rejection Control for Distributed Energy Resources in Microgrids

Active Disturbance Rejection Control for Distributed Energy Resources in Microgrids

Special Issue on Microgrids/Nanogrids Implementation, Planning, and Operation

Variable Frequency Resonant Controller Based on Generalized Predictive Control for Biased-Sinusoidal Reference Tracking and Multi-Layer Perceptron

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