Browsing by Author "Das, Narottam"

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Chronological progress in enhancing CIGS solar cell performance through window layer development: Fundamentals, synthesis, optimization
(Elsevier, 2024-11) Amin, Nowshad; Suhaimi, Nadia Hartini; Nur-E-Alam, Mohammad; Yap, Boon Kar; Khan, Sobayel; Miah, Md. Helal; Islam, Mohammad Aminul; Tiong, Sieh Kiong; Das, Narottam; Khandakher, Mayeen Uddin
Several factors, particularly the material of the window layer, contribute to the efficiency of CIGS solar cells. To optimize light absorption and reduce energy losses, it is critical to select the appropriate material for the window layer development. Thus, the main emphasis of this review is on the development of window layers, covering fundamental concepts, synthesis techniques, characterization methods, and optimization strategies. Metal oxides and doped metal oxides are critical materials for optimizing charge carrier flow, minimizing energy loss, and elevating sunlight transmission to the CIGS absorber. Despite tremendous progress, difficulties such as increased conductivity, transparency, stability, and cost-effectiveness remain. Discovering novel materials, specific combinations, and improved deposition techniques offers further details on the structure-property relationships of window layers. Addressing these difficulties is critical to improving the performance of CIGS solar cells, which are now approximately 23.6 % efficient. These enhancements are critical for progressing sustainable energy solutions.
Transient Stability Enhancement of a Grid-Connected Large-Scale PV System Using Fuzzy Logic Controller
(MDPI, 2021-10) Hazari, Md. Rifat; Jahan, Effat; Mannan, Mohammad Abdul; Das, Narottam
This paper presents a new intelligent control strategy to augment the low-voltage ride-through (LVRT) potential of photovoltaic (PV) plants, and the transient stability of a complete grid system. Modern grid codes demand that a PV plant should be connected to the main power system during network disturbance, providing voltage support. Therefore, in this paper, a novel fuzzy logic controller (FLC) using the controlled cascaded strategy is proposed for the grid side converter (GSC) of a PV plant to guarantee voltage recovery. The proposed FLC offers variable gains based upon the system requirements, which can inject a useful amount of reactive power after a severe network disturbance. Therefore, the terminal voltage dip will be low, restoring its pre-fault value and resuming its operation quickly. To make it realistic, the PV system is linked to the well-known IEEE nine bus system. Comparative analysis is shown using power system computer-aided design/electromagnetic transients including DC (PSCAD/EMTDC) software between the conventional proportional–integral (PI) controller-based cascaded strategy and the proposed control strategy to authenticate the usefulness of the proposed strategy. The comparative simulation results indicate that the transient stability and the LVRT capability of a grid-tied PV system can be augmented against severe fault using the proposed FLC-based cascaded GSC controller.
Transient Stability Enhancement of a Grid-Connected Large-Scale PV System Using Fuzzy Logic Controller
(MDPI, 2021-10-08) Hazari, Md. Rifat; Jahan, Effat; Mannan, Mohammad Abdul; Das, Narottam
This paper presents a new intelligent control strategy to augment the low-voltage ride-through (LVRT) potential of photovoltaic (PV) plants, and the transient stability of a complete grid system. Modern grid codes demand that a PV plant should be connected to the main power system during network disturbance, providing voltage support. Therefore, in this paper, a novel fuzzy logic controller (FLC) using the controlled cascaded strategy is proposed for the grid side converter (GSC) of a PV plant to guarantee voltage recovery. The proposed FLC offers variable gains based upon the system requirements, which can inject a useful amount of reactive power after a severe network disturbance. Therefore, the terminal voltage dip will be low, restoring its pre-fault value and resuming its operation quickly. To make it realistic, the PV system is linked to the well-known IEEE nine bus system. Comparative analysis is shown using power system computer-aided design/electromagnetic transients including DC (PSCAD/EMTDC) software between the conventional proportional–integral (PI) controller-based cascaded strategy and the proposed control strategy to authenticate the usefulness of the proposed strategy. The comparative simulation results indicate that the transient stability and the LVRT capability of a grid-tied PV system can be augmented against severe fault using the proposed FLC-based cascaded GSC controller.
Transient Stability Enhancement of a Grid-Connected Large-Scale PV System Using Fuzzy Logic Controller
(Electronics, MDPI, 2021-10-08) Hazari, Md. Rifat; Jahan, Effat; Mannan, Mohammad Abdul; Das, Narottam
This paper presents a new intelligent control strategy to augment the low-voltage ride-through (LVRT) potential of photovoltaic (PV) plants, and the transient stability of a complete grid system. Modern grid codes demand that a PV plant should be connected to the main power system during network disturbance, providing voltage support. Therefore, in this paper, a novel fuzzy logic controller (FLC) using the controlled cascaded strategy is proposed for the grid side converter (GSC) of a PV plant to guarantee voltage recovery. The proposed FLC offers variable gains based upon the system requirements, which can inject a useful amount of reactive power after a severe network disturbance. Therefore, the terminal voltage dip will be low, restoring its pre-fault value and resuming its operation quickly. To make it realistic, the PV system is linked to the well-known IEEE nine bus system. Comparative analysis is shown using power system computer-aided design/electromagnetic transients including DC (PSCAD/EMTDC) software between the conventional proportional–integral (PI) controller-based cascaded strategy and the proposed control strategy to authenticate the usefulness of the proposed strategy. The comparative simulation results indicate that the transient stability and the LVRT capability of a grid-tied PV system can be augmented against severe fault using the proposed FLC-based cascaded GSC controller.
Transient Stability Enhancement of a Grid-Connected Large-Scale PV System Using Fuzzy Logic Controller
(MDPI, 2021-10-08) Hazari, Md. Rifat; Jahan, Effat; Mannan, Mohammad Abdul; Das, Narottam
This paper presents a new intelligent control strategy to augment the low-voltage ride-through (LVRT) potential of photovoltaic (PV) plants, and the transient stability of a complete grid system. Modern grid codes demand that a PV plant should be connected to the main power system during network disturbance, providing voltage support. Therefore, in this paper, a novel fuzzy logic controller (FLC) using the controlled cascaded strategy is proposed for the grid side converter (GSC) of a PV plant to guarantee voltage recovery. The proposed FLC offers variable gains based upon the system requirements, which can inject a useful amount of reactive power after a severe network disturbance. Therefore, the terminal voltage dip will be low, restoring its pre-fault value and resuming its operation quickly. To make it realistic, the PV system is linked to the well-known IEEE nine bus system. Comparative analysis is shown using power system computer-aided design/electromagnetic transients including DC (PSCAD/EMTDC) software between the conventional proportional–integral (PI) controller-based cascaded strategy and the proposed control strategy to authenticate the usefulness of the proposed strategy. The comparative simulation results indicate that the transient stability and the LVRT capability of a grid-tied PV system can be augmented against severe fault using the proposed FLC-based cascaded GSC controller.