Explanipedia

Andronov-Hopf- Oscillator Based Control of an Islanded Microgrid With Distributed Consensus Secondary Control Open

Tamás Kerekes, Ioan Serban, Ronald Musona · 2025

Solar roof tiles: Unleashing technical advantages and contribution to sustainable society Open

Waqas Ahmed, Jamil Ahmed Sheikh, Tamás Kerekes, M. A. Parvez Mahmud · 2024

A solar photovoltaic (PV) system is exposed to multiple environmental stresses such as bird droppings, soiling, and cast shadows during its operation, leading to the formation of hotspots. Traditional PV panels are equipped with a bypass d…

Dual-level design for cost-effective sizing and power management of hybrid energy storage in photovoltaic systems Open

Xiangqiang Wu, Zhongting Tang, Daniel‐Ioan Stroe, Tamás Kerekes · 2024

An adaptive power smoothing approach based on artificial potential field for PV plant with hybrid energy storage system Open

Xiangqiang Wu, Yue Wu, Zhongting Tang, Tamás Kerekes · 2024

The increasing quantity of PV installation has brought great challenges to the grid owing to power fluctuations. Hybrid energy storage systems have been an effective solution to smooth out PV output power variations. In order to reduce the…

Lithium-Ion Supercapacitors and Batteries for Off-Grid PV Applications: Lifetime and Sizing Open

Tarek Ibrahim, Tamás Kerekes, Dezső Séra, Abderezak Lashab, Daniel‐Ioan Stroe · 2024

The intermittent nature of power generation from photovoltaics (PV) requires reliable energy storage solutions. Using the storage system outdoors exposes it to variable temperatures, affecting both its storage capacity and lifespan. Utiliz…

An Explicit Subcell-Based Photovoltaic Model and Its Application in Fault Diagnosis Under Partial Shading Conditions Open

Xinyi Chen, Yu Shen, Tamás Kerekes, Yiye Wang, Kanjian Zhang , et al. · 2023

Photovoltaic (PV) models under partial shading conditions are typically based on the scenario that one whole module or cell is shaded under uniform low irradiance. Nonuniform partial shading on one cell is seldom discussed. However, partia…

Robust PLL-Based Grid Synchronization and Frequency Monitoring Open

Florin Iov, Weihao Zhao, Tamás Kerekes · 2023

Nowadays, the penetration of inverter-based energy resources is continuously increasing in low-voltage distribution grids. Their applications cover traditional renewable energy production and energy storage but also new applications such a…

Capacitor Voltage Feedforward-Based Voltage Loop Control for Grid-Forming Modular Multilevel Converters Under Wide Range of Grid Strength Open

Wentao Liu, Rui Wang, Tamás Kerekes, Tomislav Dragičević, Remus Teodorescu · 2023

An efficient closed-loop voltage tracking control (VTC) for a grid-forming-based converter is required for precise voltage regulation. However, few papers designed a VTC exclusively for modular multilevel converter (MMC) with a full unders…

Modulation-Compensated Power Synchronization Control for Modular Multilevel Converters With Enhanced Performance Under Varying SCR Open

Wentao Liu, Rui Wang, Tamás Kerekes, Tomislav Dragičević, Remus Teodorescu · 2023

Power synchronization control (PSC), one of the common grid-forming (GFM) controls, is an emerging grid support technique for converters in the converter-dominated power system. However, its application to modular multilevel converters (MM…

Passivity-Based Stability Design of LCL-Filtered Converters: An Overview Open

Jiacheng Sun, Dao Zhou, Tamás Kerekes, Wenli Yao, Xiaobin Zhang · 2023

The stability of LCL-type grid-connected converters in distributed power generation systems (DPGS) have been numerously investigated. It is well known that resonance of high-order filters may cause system oscillations and grid current dist…

Sizing of Hybrid Supercapacitors and Lithium-Ion Batteries for Green Hydrogen Production from PV in the Australian Climate Open

Tarek Ibrahim, Tamás Kerekes, Dezső Séra, Shahrzad S. Mohammadshahi, Daniel‐Ioan Stroe · 2023

Instead of storing the energy produced by photovoltaic panels in batteries for later use to power electric loads, green hydrogen can also be produced and used in transportation, heating, and as a natural gas alternative. Green hydrogen is …

A Comparison and Introduction of Novel Solar Panel’s Fault Diagnosis Technique Using Deep-Features Shallow-Classifier through Infrared Thermography Open

Waqas Ahmed, Muhammad Umair Ali, M. A. Parvez Mahmud, Kamran Ali Khan Niazi, Amad Zafar , et al. · 2023

Solar photovoltaics (PV) are susceptible to environmental and operational stresses due to their operation in an open atmosphere. Early detection and treatment of stress prevents hotspots and the total failure of solar panels. In response, …

Overview and Comparative Study of Energy Management Strategies for Residential PV Systems with Battery Storage Open

Xiangqiang Wu, Zhongting Tang, Daniel‐Ioan Stroe, Tamás Kerekes · 2022

PV and battery systems have been widely deployed in residential applications due to increasing environmental concerns and fossil energy prices. Energy management strategies play an important role in reducing energy bills and maximize profi…

New Converter Solution With a Compact Modular Multilevel Structure Suitable for High-Power Medium-Voltage Wind Turbines Open

Gustavo Gontijo, Tamás Kerekes, Dezső Séra, Mattia Ricco, László Máthé , et al. · 2022

Modern wind turbines with increasing power levels are continuously emerging. These power levels are reaching a point where excessively high currents are obtained if the traditional low-voltage wind-turbine structure is adopted. High curren…

Optimal Stochastic Day-Ahead Power Management of Hybrid AC-DC Microgrids Open

Mahshid Javidsharifi, Hamoun Pourroshanfekr Arabani, Tamás Kerekes, Dezső Séra · 2022

Due to the reappearance of DC loads in electrical systems and advanced improvement in energy storage systems (batteries) and environment-friendly properties of photovoltaics as a green energy supply, DC architecture is considered as a new …

Cost-Efficient Design of an Energy-Neutral UAV-Based Mobile Network Open

Marco Virgili, Nithin Babu, Mahshid Javidsharifi, Iman Valiulahi, Christos Masouros , et al. · 2022

This work proposes a framework to design a cost-efficient unmanned aerial vehicle (UAV)-based energy-neutral (EN) system deployed to harvest data from a set of internet-of-things (IoT) nodes. The energy-neutrality refers to the zero-sum ba…

Performance Assessment of Mismatch Mitigation Methodologies Using Field Data in Solar Photovoltaic Systems Open

Kamran Ali Khan Niazi, Tamás Kerekes, Alberto Dolara, Yongheng Yang, Sonia Leva · 2022

Partial shading and other non-ideal conditions cause electrical mismatches that reduce the output power generated by a photovoltaic (PV) system. It affects the overall performance and efficiency of PV systems. Therefore, a model is develop…

Stochastic Optimal Strategy for Power Management in Interconnected Multi-Microgrid Systems Open

Mahshid Javidsharifi, Hamoun Pourroshanfekr Arabani, Tamás Kerekes, Dezső Séra, Josep M. Guerrero · 2022

A novel stochastic strategy for solving the problem of optimal power management of multi-microgrid (MMG) systems is suggested in this paper. The considered objectives are minimizing the total cost and emission of the system. The suggested …

Current Balancing Control for Interleaved Half-Bridge Submodules in Modular Multilevel Converters Open