Design of Grid-Connected rooftop Photovoltaic system for leakage current reduction using optimization algorithms

Rout, Kamalesh Chandra

doi:10.1016/j.solener.2023.111832

Cited by 3 publications

(2 citation statements)

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“…Among the various renewable energy technologies, PV systems are a primary contributor to renewable energy production (Abdolmaleki;Berardi, 2024). However, the fluctuation and unpredictability of solar energy production require the utilization of effective power electronics converters to easily incorporate photovoltaic (PV) systems into the electrical grid (Rout, 2023;Tian et al, 2023;Zhao et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…As not all of them are met at the same time, different control strategies can be utilized. In order to inject high power quality within the international standards in terms of power factor and law harmonic distortion (Rout, 2023;Zeb et al, 2018). The internal dynamics stability must be guaranteed through the control of circulating current and sub module capacitor voltage balancing (Yang et al, 2017;Zhao et al, 2022;Zhu et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

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Robust line voltage sensor-less control of grid-connected MMC converter in PV Applications

Alia,

Merzouk,

Rezaoui

2024

SEES

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This paper discusses the voltage sensor-less control of a single-phase grid-connected Modular Multilevel Converter (MMC) in photovoltaic (PV) applications. The design of the control system is crucial to efficiently injecting PV power into the main grid. Therefore, three control targets are designed. Maximum power point tracking (MPPT) through the Incremental Conductance (IC) algorithm, DC link voltage regulation, and finally output active and reactive power controlling throughout the regulation of grid current amplitude and phase shift. To achieve those targets, the value of grid voltage has to be known accurately. The main contribution of this study is the use of a Simplified Super Twisting Algorithm Sliding Mode Observer (SSTA-SMO) for grid voltage estimation. The effectiveness and satisfactory performance of the proposed system are validated through simulations via MATLAB. To verify the effectiveness of the proposed approach. A study was conducted to evaluate the efficacy of the SSTA-SMO proposal in comparison to a traditional sliding-mode observer. The objective was to showcase the superiority of the proposed approach. The results suggest that the suggested observer surpasses other methods in terms of several aspects, including minimal errors in grid voltage observation, high-quality estimation of grid voltage, and accurate tracking of the reference. Furthermore, it exhibits robustness when exposed to different levels of radiation.

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