Robust control design for a boost converter in a photovoltaic system

Fard, Majid T.; Aldeen, M.

doi:10.1109/pedg.2016.7527004

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…In PV applications, the converter power stage and control designs are usually treated as if the input source were a rigid voltage source [31][32][33]. Viinamäki in [34] clearly show that the special features of the PV generator shall be considered carefully when selecting the power stage components and performing power loss analyses.…”

Section: Discussionmentioning

confidence: 99%

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

2017

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Abstract:The application of constant power control and inclusion of energy storage in grid-connected photovoltaic (PV) energy systems may increase the use of two-stage system structures composed of DC-DC-converter-interfaced PV generator and grid-connected inverter connected in cascade. A typical PV-generator-interfacing DC-DC converter is a boost-power-stage converter. The renewable energy system may operate in three different operation modes-grid-forming, grid-feeding, and grid-supporting modes. In the last two operation modes, the outmost feedback loops are taken from the input terminal of the associated power electronic converters, which usually does not pose stability problems in terms of their input sources. In the grid-forming operation mode, the outmost feedback loops have to be connected to the output terminal of the associated power electronic converters, and hence the input terminal will behave as a negative incremental resistor at low frequencies. This property will limit the operation of the PV interfacing converter in either the constant voltage or constant current region of the PV generator for ensuring stable operation. The boost-power-stage converter can be applied as a voltage or current-fed converter limiting the stable operation region accordingly. The investigations of this paper show explicitly that only the voltage-fed mode would provide feasible dynamic and stability properties as a viable interfacing converter.

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Section: Discussionmentioning

confidence: 99%

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

2017

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“…The MPPT algorithm inputs are the actual measured values of the PV output voltage and current. The MPPT algorithm output is a reference input voltage used by the PV bus voltage controller to adjust the duty cycle of the DC-DC converter, and consequently the PV output voltage [23].…”

Section: Cloud Mppt Control Designmentioning

confidence: 99%

Wireless Diagnosis and Control of DC–DC Converter for Off-Grid Photovoltaic Systems

El Abbadi,

Aatabe,

Bouzid

2024

Sustainability

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Integrating a photovoltaic (PV) microgrid system with wireless network control heralds a new era for renewable energy systems. This fusion capitalizes on the strengths of photovoltaic technology, leveraging solar energy for electricity generation while incorporating advanced networked control capabilities. Although employing network communication to facilitate information exchange among system elements offers benefits, it also introduces novel challenges which can hinder fault diagnosis, such as packet loss and communication delay. This paper focuses on a cloud-based fault detection approach for an effective boost converter within a photovoltaic system. Faults are diagnosed using a detection algorithm based on the Lyapunov function, ensuring power optimization. The effectiveness of our approach is demonstrated through simulations of a PV generator model utilizing real-time weather data collected in Brazil, illustrating its robustness through the acquired results.

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“…Em linhas gerais, a lei de controle está associada a minimização de um critério quadrático, que utiliza funções de energia com respeito as variáveis de estado e controle, tal que a planta controlada seja uniformente e assintoticamente estável (Das et al (2015)). Mais recentemente, tem-se reconhecido a importância de aplicações a sistemas lineares com parâmetros incertos invariantes no tempo que, notoriamente, impulsionou o controle LQR com restrições na forma de desigualdades matriciais lineares (do inglês, Linear Matrix Inequalities -LMIs)à problemas de escala industrial (Ge et al (2002); Ko et al (2006); Koroishi et al (2016); Fard and Aldeen (2016)).…”

Section: Introductionunclassified

Controladores LQR-gain scheduling para sistemas LPV com incertezas politópicas

Caun

Assunção

Teixeira

2020

Anais Do Congresso Brasileiro De Automática 2020

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Neste trabalho é investigado a ação de incertezas paramétricas variantes no tempo em todas as matrizes de um sistema linear contı́nuo no tempo e, portanto, um ganho de realimentação de estados linear variante com parâmetros (LPV) e quadraticamente estabilizante é proposto. O método é baseado no regulador linear quadrático (LQR) e pode ser visto como uma alternativa de projeto mais simples que outras abordagens convencionais da literatura via funções de Lyapunov dependentes de parâmetros (PDLF), pois a matriz de ganhos não depende da inversão de uma matriz literal. O algoritmo é baseado em formulações LMIs relaxadas do problema LPV baseado no LQR, afim de reduzir o conservadorismo da função de Lyapunov quadrática comum (CQLF). Finalmente, análises práticas em uma suspensão ativa ilustram a eficiência das propostas na presença de falhas variantes no tempo em atuadores.

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Robust control design for a boost converter in a photovoltaic system

Cited by 11 publications

References 21 publications

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications

Wireless Diagnosis and Control of DC–DC Converter for Off-Grid Photovoltaic Systems

Controladores LQR-gain scheduling para sistemas LPV com incertezas politópicas

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