A Method based on a Sliding Mode Observer for Fault Detection in Photovoltaic Solar Systems connected to AC Microgrids

Criollo, Pablo; Ortiz, Leony; Águila, Alexander; Pavón, Wilson

doi:10.1109/etcm56276.2022.9935712

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…Not very many papers on the use of observers for solar cell (photovoltaic) systems can be found in the engineering literature. Among the interesting ones are the papers [54][55][56][57][58][59][60][61][62][63]. One of the early papers on this topic [54] uses a sliding-mode observer to estimate the solar array-produced current in a grid-connected photovoltaic system.…”

Section: Observers For Solar Cell Systemsmentioning

confidence: 99%

“…In [60], a robust adaptive hybrid second-order integrator-based rotor flux observer was designed for self-sensing control of a solar array-fed permanent magnet synchronous motor drive used for a water pump. Reference [61] designed a sliding-mode observer for fault detection in a photovoltaic system connected to a microgrid. The method was validated both experimentally, using a corresponding microgrid benchmark system, and via simulation with MATLAB/SIMULINK.…”

Section: Observers For Solar Cell Systemsmentioning

confidence: 99%

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Linear, Nonlinear, and Distributed-Parameter Observers Used for (Renewable) Energy Processes and Systems—An Overview

Radisavljevic-Gajic,

Karagiannis,

Gajic

2024

Energies

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Full- and reduced-order observers have been used in many engineering applications, particularly for energy systems. Applications of observers to energy systems are twofold: (1) the use of observed variables of dynamic systems for the purpose of feedback control and (2) the use of observers in their own right to observe (estimate) state variables of particular energy processes and systems. In addition to the classical Luenberger-type observers, we will review some papers on functional, fractional, and disturbance observers, as well as sliding-mode observers used for energy systems. Observers have been applied to energy systems in both continuous and discrete time domains and in both deterministic and stochastic problem formulations to observe (estimate) state variables over either finite or infinite time (steady-state) intervals. This overview paper will provide a detailed overview of observers used for linear and linearized mathematical models of energy systems and review the most important and most recent papers on the use of observers for nonlinear lumped (concentrated)-parameter systems. The emphasis will be on applications of observers to renewable energy systems, such as fuel cells, batteries, solar cells, and wind turbines. In addition, we will present recent research results on the use of observers for distributed-parameter systems and comment on their actual and potential applications in energy processes and systems. Due to the large number of papers that have been published on this topic, we will concentrate our attention mostly on papers published in high-quality journals in recent years, mostly in the past decade.

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Section: Observers For Solar Cell Systemsmentioning

confidence: 99%

Section: Observers For Solar Cell Systemsmentioning

confidence: 99%

Linear, Nonlinear, and Distributed-Parameter Observers Used for (Renewable) Energy Processes and Systems—An Overview

Radisavljevic-Gajic,

Karagiannis,

Gajic

2024

Energies

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An On-Line Sensor Fault Detection System for an AC Microgrid Secondary Control Based on a Sliding Mode Observer Model

Bravo,

Ortiz,

García

et al. 2024

Energies

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The current study proposes a strategy for sensing fault detection in the secondary control of an isolated Microgrid based on a high-order Sliding Mode Robust Observers design. The proposed strategy’s main objective is to support future diagnostic and fault tolerance systems in handling these extreme situations. The proposal is based on a generation system and a waste management system. Four test scenarios were generated in a typical Microgrid to validate the designed strategy, including two Battery Energy Storage Systems in parallel, linear, and non-linear loads. The scenarios included normal grid operation and three types of sensing faults (abrupt, incipient, and random) directly affecting the secondary control of a hierarchical control strategy. The results showed that the proposed strategy could provide a real-time decision for detection and reduce the occurrence of false alarms in this process. The effectiveness of the fault detection strategy was verified and tested by digital simulation in Matlab/Simulink R2023b.

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A Method based on a Sliding Mode Observer for Fault Detection in Photovoltaic Solar Systems connected to AC Microgrids

Cited by 2 publications

References 18 publications

Linear, Nonlinear, and Distributed-Parameter Observers Used for (Renewable) Energy Processes and Systems—An Overview

Linear, Nonlinear, and Distributed-Parameter Observers Used for (Renewable) Energy Processes and Systems—An Overview

An On-Line Sensor Fault Detection System for an AC Microgrid Secondary Control Based on a Sliding Mode Observer Model

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