Rafiq Asghar

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• Doctor of Philosophy
• Research Assistant at Roma Tre University

Photovoltaic (PV) power forecasting is essential for providing accurate data on future power production, ensuring secure power grid operations, and reducing solar energy operation expenses. This research introduces a novel dual-steam hybrid model that uses Bidirectional Long-Short Term Memory (BiLSTM) and Convolutional Neural Networks (CNN) to pred...

Symbolic regression (SR) has emerged as a powerful tool for the characterization of Wireless Power Transfer (WPT) systems, estimating the distance between coils and finding the relationship between frequency and phase so as to find the best frequency to increase the power factor. This study explores the application of SR on both simulated and exper...

This research evaluates the technical and economic aspects of solar photovoltaic (PV) power installations on farmland, utilizing a simulation model in MATLAB to forecast annual system output based on nominal power and meteorological data. This study compares various configurations, including single-sided versus double-sided modules and fixed versus...

This paper presents an analytical approach for calculating the mutual inductance between superconducting pancake coils in Wireless Power Transfer (WPT) systems, leveraging the improved series-form analytical expression derived from [1]. The method addresses the challenges of misalignment and complex coil geometries typical in high-temperature super...

Solar energy is largely dependent on weather conditions, resulting in unpredictable, fluctuating, and unstable photovoltaic (PV) power outputs. Thus, accurate PV power forecasts are increasingly crucial for managing and controlling integrated energy systems. Over the years, advanced artificial neural network (ANN) models have been proposed to incre...

The integration of electric vehicles (EVs) with the smart grid presents a transformative solution for achieving energy efficiency and environmental sustainability. This paper explores advanced energy storage devices and management systems that enhance the operational flexibility and stability of EVs within a smart grid context. By enabling bidirect...

Permanent Magnet Synchronous Generator-Wind Turbines (PMSG-WTs) are becoming increasingly popular, which is contributing to significant issues concerning the stability of modern power. One crucial aspect is the Low Voltage Ride Through (LVRT) capability, especially in interconnected networks. To address this issue, this study presents a novel contr...

Permanent Magnet Synchronous Generator-Wind Turbines (PMSG-WTs) are becoming increasingly popular, which is contributing to significant issues concerning the stability of modern power. One crucial aspect is the Low Voltage Ride Through (LVRT) capability, especially in interconnected networks. To address this issue, this study presents a novel contr...

Smart grids (SG) constitute a revolutionary concept within the energy sector, enabling the establishment of a bidirectional communication infrastructure. This infrastructure significantly improves control, efficiency, and overall service quality in power systems. The study provides an in-depth survey on the classification of EVs, including both plu...

Load frequency control (LFC) has recently gained importance due to the increasing integration of wind energy in contemporary power systems. Hence, several power system models, control techniques, and controllers have been developed to improve the efficiency, resilience, flexibility, and economic feasibility of LFC. Critical factors, such as energy...

Smart grid (SG) will transform contemporary businesses by offering efficient solutions to improve existing power systems' efficiency, stability, and resilience. SG provides long-term power supply by interconnecting electrical grids and communications infrastructures. However, SGs are plagued with problems and complexities, particularly regarding ca...

Reliability and controls are essential for preventing outages, load disparity, and synchronization mismatch in a power system. Smart Grid (SG) is a cost-effective solution for minimizing inter-regional variations, optimizing load demand, stabilizing equipment operations, and managing conventional and renewable power sources. However, SGs are still...

In recent years, the environmental and economic consequences of coal, gasoline and other conventional energy sources have been widely discussed. Currently, Pakistan's energy output is highly dependent on these resources; as a consequence, the country is facing a severe energy crisis. The government spends more than $3.7 billion annually on fossil f...

Large-scale wind power integration has raised concerns about the reliability and stability of power systems. The rotor circuit of a doubly fed induction generator (DFIG) is highly vulnerable to unexpected voltage dips, which can cause considerable electromotive force in the circuit. Consequently, the DFIG must fulfil the fault-ride through (FRT) cr...

The environment and the economy are negatively impacted by conventional energy sources, such as coal, gasoline, and other fossil fuels. Pakistan’s reliance on these resources has resulted in a catastrophic energy crisis. This has driven the government to make critical decisions such as early retail closures, power outages for the industrial sector,...

Modern power systems are largely based on renewable energy sources, especially wind power. However, wind power, due to its intermittent nature and associated forecasting errors, requires an additional amount of balancing power provided through the automatic generation control (AGC) system. In normal operation, AGC dispatch is based on the fixed par...

The losses in the power system vary the gap between energy supply and demand. Among these losses, the distribution system has major contributions compared to the transmission system. This paper thoroughly examines the PESCO distribution losses and implements a practical approach that forties in the loss's minimization. Using the bifurcation and res...

In recent decades, there has been a substantial growth in EVs sales which would eventually reduce GHG emissions and improve the energy structure. However, effective exploitation of EVs requires the combination of technologies, demand, financial and political considerations which make EV transitions a more enticing option to the users. In this trans...

Advance Digital Signal Processing (DSP) techniques are controlling a wide range of signals in Smart Grid (SG) and narrowing the communication gap between various SG entities. Therefore, DSP is considered the backbone of SG that will meet future needs. The DSP interactions within SG are vital for SG reliability and efficiency. The advanced technique...

Large-scale EVs acceptance would certainly lead to relieving major issues, including carbon pollution, petroleum dependence, and economic prosperity. However, Pakistan confronting a range of cross-sectoral and multifarious impediments has recently decided to switch from ICEs to EVs with a variety of policy options for auto manufacturers, customers,...

Purpose In surface mount assembly (SMA) process, small components are subjected to high temperature variations, which result in components’ deformation and cracking. Because of this phenomenon, cracks are formed in the body of carbonyl powder ceramic inductor (CPCI) in the preheat and cooling stages of the reflow oven. These cracks become the main...

The recent trend of renewable energy resources penetration into the electricity supply mix has put forward more requirements on the power grid for the quality of supply. Integration of distributed generation units into the power grid has increased planning and operational challenges. Considering the above, capacity planning, grid operations, and de...

The sudden voltage drop may upsurge the current level and trigger the self‐protective system to disconnect the wind turbines that are detrimental for grid constancy. A novel structure of a modified switch type fault current limiter (M‐STFCL) is proposed that protects the doubly‐fed induction generator wind turbine (DFIG‐WT) during the symmetrical a...

With the booming penetration of renewable energies, grid tied inverters are finding increased application. For control decoupling and power stabilization of grid-tied PV systems, DC-link capacitors are extensively employed. Efficient and fast DC-link control is required to reduce ripples, limit fluctuation in input DC voltage of the inverter and de...

The cloud computing plays a pivotal role in information processing of Smart Grid (SG) by offering fast and dynamic processing capabilities. The Cloud Computing (CC) features and contribution to SG are elaborated in detail in this paper. Further, this paper emphasizes on storage capabilities and information management of CC. The prominent functions...

Linear and Non-Linear Control Schemes play a pivotal role in the reliable and synchronized operation of Smart Grid (SG). In emerging SG, there is a pressing need for accommodation of Cloud Data Center based fast computational processing of advance control architecture, communication technologies, and Advanced Metering Infrastructure. The Future SG...

Purpose The purpose of this paper is to investigate and minimize the printing-related defects in the surface mount assembly (SMA) process. Design/methodology/approach This paper uses an experimental approach to explore process parameter and printing defects during the SMA process. Increasing printing performance, various practices of solder paste...

Purpose Low relative humidity (RH) effect surface mount devices in numerous ways. The smaller size (0201) capacitor and resistor start wasting when RH is low. Due to low RH, electrostatic charges built-up on the surface of surface mount devices (SMDs) and component’s reel. The positive charged SMDs stick with the negatively charged reel tape and a...

SF6 gas has used in power equipment due to its excellent dielectric properties and arc-quenching potential. Besides its good properties, it is an environmental hazard gas due to its extremely high Global Warming Potential (GWP) 0f 23800 times of carbon dioxide. In this paper, CCl2F2/CO2 and CCl2F2/N is investigated as an alternative to SF6. Further...

The recent trend of renewable energy resources penetration into the electricity supply mix has put forward more requirements on the power grid for the quality of supply. Integration of distributed generation units into the power grid has increased planning and operational challenges. Considering above, capacity planning, grid operations, and demand...

Fault currents can degrade circuit breakers and other expensive system components. By installing FCLs, many utilities can protect the system from detrimental condition with low cost. Solid state and superconductor based FCL technology are developed and getting greater attention from the market. With the cost reduction in high power switching device...