http://10.9.150.37:8080/dspace//handle/atmiyauni/463 2026-04-27T18:51:56Z 2026-04-27T18:51:56Z Adroja, Nitin Mansoori, Nasreenbanu Raval, Dhaval http://10.9.150.37:8080/dspace//handle/atmiyauni/2143 2025-01-01T05:53:54Z 2024-01-01T00:00:00Z

Title: Enhancing Renewable Energy Integration with Grid-Forming Converter-Based HVDC Systems: Modelling and Validation Authors: Adroja, Nitin; Mansoori, Nasreenbanu; Raval, Dhaval Abstract: Pollution free renewable energy sources are key solutions for increasing power demand. Unpredictable nature of power electronic based renewable energy sources impacts negatively on grid voltage and frequency profile. Energy storage is one of the solutions to overcome fluctuating power generation from renewable energy sources. Shorter life span of energy storage makes it costly. Grid forming control is another solution to overcome fluctuating power generation from renewable energy sources. Grid forming converters can regulate voltage and frequency of existing grid by regulating output active and reactive power. Grid forming converter can also form the gridfor the remote area where the loads are isolated from utility grid. To regulate output active power grid forming converter also require energy storage when utilized with renewable energy sources. High Voltage Direct Current (HVDC) with one of the converters operating under grid forming mode can supply large isolated load. Renewable energy sources which is operating under grid following mode can also be integrated with High Voltage Direct Current (HVDC) with one of the converters operating under grid formingmode. In this research work, capability of grid forming converter based HVDC in varying load condition has been verified. To understand the effect of integration of renewable energy with grid forming based HVDC, Doubly Fed Induction Generation (DFIG) based wind turbine has been integrated. To validate the capability of grid forming converter based HVDC modelling has been done in Simulink/MATLAB. Results show that Grid forming converter based HVDC system is capable to fulfil the load demand in varying load/generation condition

2024-01-01T00:00:00Z Pandya, Dharmesh J. Pandian, P. Muthu Kumar, Indradeep Parmar, Ashish Singh, Navdeep Abd Al-saheb, Alaa Jasim Aru, Vanya http://10.9.150.37:8080/dspace//handle/atmiyauni/1686 2024-11-19T07:52:48Z 2023-01-01T00:00:00Z

Title: Supercapacitors: Review of materials andfabrication methods Authors: Pandya, Dharmesh J.; Pandian, P. Muthu; Kumar, Indradeep; Parmar, Ashish; Singh, Navdeep; Abd Al-saheb, Alaa Jasim; Aru, Vanya Abstract: It is hoped that supercapacitors will power devices in the future. Future hybrid electricautomobiles and other electrical infrastructure will benefit from these parts. Improvingsupercapacitors' energy and power densities is essential to tap into their potential fully.Improvements in electrode materials and fabrication methods could solve this problem.The development of better supercapacitor electrodes has necessitated the production ofseveral different materials during the past few years. It is prudent to investigate all facetsof supercapacitor units due to the rapid development of technology. This paper reviews abrief overview of the broad spectrum of current supercapacitors Modern fabricationmethods, materials for supercapacitors, and their future potential are analysed. Alsodiscussed the main technical obstacles that could hinder future growth efforts in variousindustries.

2023-01-01T00:00:00Z Kathad, Shilpa K. Dr. Dharmesh J., Pandya http://10.9.150.37:8080/dspace//handle/atmiyauni/1684 2024-11-19T07:35:32Z 2023-01-01T00:00:00Z

Title: Virtual Inertia Based Inverters for Frequency Mitigation By Incorporating VIC and Multi-Power Level Controller In Grid Connected Renewable Energy Authors: Kathad, Shilpa K.; Dr. Dharmesh J., Pandya Abstract: The penetration of Renewable Energy Sources (RESs) into microgrids is gaining huge significance in recent times. RESs are integrated with conventional grid systems to meet the growing energy demand and to enhance the power quality. The increasing penetration of RES into the grid system affects the stability of frequency in microgrids due to the stochastic nature of photovoltaic (PV) and wind energy generation. Unlike in traditional power generation systems, the lack of rotational inertia in microgrids is one of the critical concerns which affects the integration of RES with the grid system through power electronic converters. This introduces more uncertainties into the system and hence the operation and control of such a system becomes more complicated. In order to maintain the stability of microgrids and to effectively utilize RESs and distributed generation (DG) systems, it is essential to control virtual inertia. Proper inertia control improves the flexibility of microgrid operation and as a result various controlling strategies have been proposed in the past to control the virtual inertia. This paper presents a new virtual inertia control (VIC) approach with a multi power level controller (MPLC) for RES integrated microgrids. Considering the high level penetration of RES, the proposed approach is designed to enhance the system performance under sudden load variations and frequency variations. The efficiency of the proposed control approach is validated with and without MPLC. Results show that the controller achieves better frequency stability with MPLC.

2023-01-01T00:00:00Z Kathad, Shilpa K. Dr. Dharmesh, Pandya http://10.9.150.37:8080/dspace//handle/atmiyauni/1680 2024-11-19T07:15:05Z 2023-01-01T00:00:00Z

Title: A review on Virtual Inertia emulation during Integration of Renewable Energy Sources Authors: Kathad, Shilpa K.; Dr. Dharmesh, Pandya Abstract: Now a days for power generation it is essential to utilize Renewable Energy Sources. Carbon emissions are polluting our environment, so conventional sources of energy are to be limited and it is suggested to go for green and clean energy. Penetration of Renewable Energy Sources into gird is increased and it is a major concern for power engineers to maintain the power quality. Due to integration of Solar and Wind energy Systems in Grid, the power quality issues may arise, and grid becomes weaker. Power grid integration of renewable energy sources is achieved through power electronic converters. These converters decouple the source from load without providing inertia. As a result, inertia of the power grid decreases, resulting in undesirable load shedding and cascading failures under power imbalances. To preserve stability during contingency events, it is important to add inertia support to the grid. In the presented work power quality issues are described. Literature review on power quality issues and its mitigation techniques has been covered. An attempt has been made to discuss about virtual inertia of Inverter during Grid Integration of Renewable Energy Sources. Inertia emulation and its control strategy has been proposed. To assure and maintain good quality of power at all the levels it is needed to develop an efficient technique to resolve the power quality issues.

2023-01-01T00:00:00Z