Harmonic analysis of grid‐connected inverters considering external distortions: addressing harmonic emissions up to 9 kHz

Khajeh, Kiarash Gharani; Solatialkaran, Davood; Zare, Firuz; Mithulananthan, Nadarajah

doi:10.1049/iet-pel.2019.1363

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…Basicamente, a DHT da corrente injetada na rede pode ser afetada por distorções do sinal de referência das malhas de controle, pelo conteúdo harmônico da tensão da rede e pelas oscilações de baixa frequência da tensão do barramento CC [16]- [18]. Via de regra, distorções do sinal de referência surgem devido às componentes harmônicas da tensão da rede elétrica que não são adequadamente atenuadas pelo circuito de sincronismo [19]- [20].…”

Section: Introductionunclassified

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Metodologia para Estimação da Distorção Harmônica Total em Inversores Monofásicos Conectados à Rede Elétrica

Gruner,

Gonçalves,

Schmitz

et al. 2023

Eletrônica de Potência

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This paper presents a methodology to estimate, in the design stage, the total harmonic distortion of the current injected into the power grid by two-stage voltage source inverters (VSI). As such inverters operate in a closed loop, the quality of the grid current is highly dependent on the dynamics of the control loops. Thus, it is necessary to focus on an approach to model the behavior of the grid current considering the closed-loop disturbances. The proposed approach allows deriving an equation to predict the behavior of the current injected into the grid and estimate its harmonic distortion, becoming an important tool for optimal design of grid-connected inverters. To validate the accuracy of the developed methodology, experimental results are presented in different operating scenarios.

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Section: Introductionunclassified

“…Em relação às componentes harmônicas da tensão da rede, distintos métodos de mitigação podem ser encontrados na literatura [18], mas um simples laço Feedforward geralmente é eficaz na supressão dos harmônicos de corrente oriundos da tensão da rede [21].…”

Section: Introductionunclassified

Metodologia para Estimação da Distorção Harmônica Total em Inversores Monofásicos Conectados à Rede Elétrica

Gruner,

Gonçalves,

Schmitz

et al. 2023

Eletrônica de Potência

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Analysis and Design of Total Harmonic Distortion Performance in Grid‐Tied Single‐Phase Voltage Source Inverters Through Closed‐Loop Modeling

Gruner,

Gonçalves,

Schmitz

et al. 2024

Circuit Theory & Apps

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This paper presents a methodology to estimate, in the design stage, the total harmonic distortion of the current injected into the power grid by two‐stage voltage source inverters (VSI). As such inverters operate in a closed loop, the quality of the grid current is highly dependent on the dynamics of the control loops. Thus, it is necessary to focus on an approach to model the behavior of the grid current considering the closed‐loop disturbances. The proposed approach allows deriving an equation to predict the behavior of the current injected into the grid and estimate its harmonic distortion, becoming an important tool for optimal design of grid‐connected inverters. To validate the accuracy of the developed methodology, experimental results are presented in different operating scenarios.

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Dynamic sliding mode control of single‐stage boost inverter with parametric uncertainties and delay

Mohammadhassani

Narm

2021

IET Power Electronics

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Here, a novel control strategy based on sliding mode control for the single‐stage boost inverter is presented. The goal is to achieve a system with robustness against inherent delays and variations in parameters, fast response, and high‐quality AC voltage. Therefore, according to the idea of current‐mode control, a new type of dynamic sliding mode control (DSMC) is proposed to improve the response performance on various input and parameter operation conditions. In comparison with the conventional controllers, the proposed DSMC utilized only a single loop while presenting attractive features such as robustness against parametric uncertainties and input delay by definition new sliding surfaces. Furthermore, the proposed system has a fast and chattering‐free response, provides an appropriate steady‐state error, good total harmonic distortion (THD), while its implementation is very simple. In a fair comparison with conventional sliding mode control, simulations and laboratory experiments verified satisfactory performance and effectiveness of the DSMC method.

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Harmonic analysis of grid‐connected inverters considering external distortions: addressing harmonic emissions up to 9 kHz

Cited by 14 publications

References 29 publications

Metodologia para Estimação da Distorção Harmônica Total em Inversores Monofásicos Conectados à Rede Elétrica

Metodologia para Estimação da Distorção Harmônica Total em Inversores Monofásicos Conectados à Rede Elétrica

Analysis and Design of Total Harmonic Distortion Performance in Grid‐Tied Single‐Phase Voltage Source Inverters Through Closed‐Loop Modeling

Dynamic sliding mode control of single‐stage boost inverter with parametric uncertainties and delay

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