Mehmet Emin Meral's research while affiliated with Zhejiang University and other places

Publications (27)

Article
Taking into consideration of substantial role of energy system and sustainable development goals (SDGs) in modern society, it is critical to analyse current situation and forthcoming renewable energy development strategies under the impact of COVID-19. For this purpose, this paper provides significant new insights to assess effective approaches, op...
Article
Understanding the COVID-19 crisis that arose in 2019 is a significant important case study to prepare scenarios and meet electrical energy consumption and high renewable energy production (REP), especially in the context of the power systems. Although many researchers have investigated the medical field and electric power sectors associated with th...
Conference Paper
With the ever-increasing energy demand, the electric power sector and the energy industry are promoted to decentralization, decarbonization and digitalization. The digital platforms gradually become a megatrend for a clean energy system. Digitalization of the energy systems has conducted changes in various dimensions such as energy savings, sustain...
Conference Paper
The evolution of smart grids (SGs) has brought about various changes in the structure of existing power grids. In this context, blockchain technology is offered an encouraging solution to overcome the issues in modern power systems. In this paper, the impacts, virtualization and applications of blockchain technology on energy systems are investigat...
Article
The three-phase four-leg (3p4L) inverter can be utilized to interface electric vehicles (EVs) with the distribution networks. Vehicle to grid (V2G) inverters are employed to charge EVs from the utility grid as well as compensating harmonics and unbalanced voltages & currents on demand. Motivated by this scenario, this paper proposes a coordinated v...
Article
Electric vehicle (EV) charging stations draw nonlinear currents, which makes the distribution network unbalanced, distorted, and results in power quality (PQ) issues. These PQ issues are mitigated in this work through high-performance control of the shunt active power filter (SAPF). In the proposed method, a linear Kalman filter (LKF) has been appl...
Article
Voltage and current oscillations have become a primary power quality issues for DC and AC systems. In this respect, this paper presents a new control scheme for analytical implementation of reference current generator (RCG) based power control strategies to eliminate oscillations both DC and AC sides. Benchmarking of the RCG based power control str...
Article
Full-text available
The increasing penetration of distributed generation (DG) inverters supplying power to the networks bring challenges to the power system under the grid faulty and harmonic grid since negative sequence components lead to double oscillations. Reference current generation (RCG)‐based flexible control strategies ensure solutions to mitigate oscillation...
Article
The high penetration of distributed energy resources (DERs) consisting of photovoltaic and fuel cell and wind power plants into the modern power grid results in several challenges such as stability and reliability. In this regard, this paper proposes proportional complex integral (PCI)-based control scheme of distributed energy inverter (DEI) conne...
Article
Full-text available
The growing interest in connecting more distributed generation (DG) units to the utility grid, microgrids deal with the various challenges to satisfy a sufficient level of ancillary services such as active power oscillations (APOs), reactive power oscillations (RPOs), fault ride-through (FRT) capability, and overcurrent problem. Hence, for parallel...
Article
Full-text available
Grid‐connected inverter (GCI) has become the main interface for integrating modern power units, such as distributed energy resources, electric vehicles, microgrids and high voltage direct‐current transmission systems. To proceed in this direction, this study presents a novel voltage support control strategy to enhance the reliability and stability...
Article
Full-text available
Unbalanced grid faults are the most severe perturbations which degrade the performance of grid‐connected inverter interfaced renewable energy sources (IIRESs). In this regard, this study proposes a novel control strategy that provides optimum use of the power capability of the grid‐connected IIRES under unbalanced grid fault conditions. One of the...
Article
The integration of renewable energy sources (RES) based distributed generation (DG) systems into electric grid has many challenges such as synchronization, control, power management (PM) and power quality problems. This paper proposes a references current generator (RCG) based PM strategy to control three phase inverter and manage power flow among...
Article
Distributed Generation (DG) systems are typically interfaced with distribution lines by modern power converter devices, which their controllers and dynamic behaviours are significantly influenced by unbalanced grid faults. The active and reactive power control with positive-negative sequences (PNS) is one of fundamental of power converter control u...
Article
High energy demand, low cost requirements and higher reliability requirements increase the importance of distributed generation power systems (DGPSs). The large capacity DGPSs requires high performance control algorithms and synchronization techniques based positive-negative sequence (PNS) extractors to fulfil system reliability and power quality r...
Article
Full-text available
The voltage or current harmonics and unbalancing have severe influence on control of various applications such as power quality devices, distributed generation systems, power converter devices, electric vehicle chargers and electric motors. Orthogonal \(\hbox {d}{-}\hbox {q}\) signals are significantly a part of controller for these applications. T...
Article
Full-text available
This paper presents a power management (PM) strategy based on various operating scenarios to share power among solar system, electric grid and load. The synchronous reference frame-proportional integral (SRFPI) based control strategy is applied to the grid connected three phase inverter based solar power generation. The compared with previous simil...
Article
Full-text available
In an industrial power generation, power conversion is a significantly important concern. The power flow is seamless transmitted from fuel cell (FC) to electric grid through power converter components. This paper presents modelling and simulation of grid connected FC system. One of the most important types of FCs is that solid oxide fuel cell (SOFC...
Article
Full-text available
Grid-tied distributed generation (DG) system-based renewable energy sources such as wind, sun and hydrogen have recently gained a large attention due mainly to environmental issues. In this study, to provide energy for various loads, it is connected to the common direct current bus system after DG system-based fuel cell and solar cell are modeled a...
Article
Full-text available
The control of power converter devices is one of the main research lines in interfaced renewable energy sources, such as solar cells and wind turbines. Therefore, suitable control algorithms should be designed in order to regulate power or current properly and attain a good power quality for some disturbances, such as voltage sag/swell, voltage unb...
Article
Şebeke ile güç alışverişini düzenlemek ve harmonik bileşenleri azaltmak için literatürde farklı kontrol yöntemleri önerilmiştir. Bu çalışmada, şebekeye bağlı ikinci dereceden genelleşmiş integrator (SOGI) tabanlı tek fazlı faz kilitlemeli döngü (PLL) kullanılan tek fazlı evirici sisteminin oransal rezonans (PR) ve histerezis akım kontrolcü (HCC) ku...

Citations

... The SDGs address 17 subject areas, poverty (SDG1), hunger, health, education, gender, clean water, energy, economic growth, infrastructure, inequality, communities, production and consumption, climate, life underwater, life on land, strong institutions and partnership (SDG 17) [138]. However, the ones that are of interest to agriculture are life under water (SDG 14) and on land (SDG 15). ...
... Despite their advantages, they have some shortcomings such as "fau power generation panels, dust accumulation on electricity-generating panels, cond galloping and icing". These are associated with renewable energy source that are u smart grids (SGs) to meet the growing demand for electricity [13,16,43]. ...
... With the growth of the world's population and faster-developing industries, larger amounts of electric energy are needed [1][2][3][4][5][6]. To reduce Joule losses at longer distances, voltages delivered by generators are increased with step-up power transformers, and electric energy is transported at large voltages [7,8]. ...
... Time t Q13 cannot be longer than the switch-off duration of one of the transistor pairs from bridge "B", further reduced by safety margin time t delay , which corresponds to ( 1 /2T − t ov − t delay ). In that case, the time t Q13 is shorter compared to (14): ...
... However, SG 2.0 assists two-way information exchange of real-time price signals and end-user consumption patterns. The end-users can adopt their utilization behavior according to electricity prices as well as utilize more distributed resources with the DR involvement [26][27][28]. ...
... Furthermore, because of the presence of multivariate parameters, these controllers operate poorly under changing dynamic load conditions, and no tests have been carried out to validate these controllers' performance for MG applications. For improving the power quality, few more new controllers have been proposed and tested for unbalanced grid conditions in [31][32][33]. However, their applications are limited to electric vehicle. ...
... Fast and accurate separation of sequence components is essential for controlling converters operating in an unbalanced grid [1][2][3][4][5][6][7][8][9]. It motivated the development of numerous grid-synchronizing sequence component separation methods. ...
... Synchronized or in-phase operation of the power electronic systems with the grid plays an important role in enhancing the overall operational efficiency of the system. Grid-synchronization technique extracts the parameters of the grid voltage signals which are then used inside the controller of grid-connected converters [1][2][3][4][5][6][7]. ...
... The proposed approach in [22] realizes current-limiting control with LVRT capabilities. A unified current-limiting control scheme for grid-connected inverters under both normal and faulty grids with a simplified voltage support mechanism has been developed in [23]. This paper focuses on the current limiting of GCDCDGs in GCMGs while UG frequency and/or voltage magnitude drop. ...
... Fast and accurate separation of sequence components is essential for controlling converters operating in an unbalanced grid [1][2][3][4][5][6][7][8][9]. It motivated the development of numerous grid-synchronizing sequence component separation methods. ...