Qusay Salem

Qusay Salem
Princess Sumaya University for Technology · Department of Electrical Engineering

Doctor of Engineering

About

22
Publications
1,781
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54
Citations
Introduction
Qusay Salem received the PhD degree in Electrical Power and Energy Engineering from University of Ulm – Germany, in 2020. Currently, he serves as an Assistant Professor with the Department of Electrical Engineering at Princess Sumaya University for Technology. His research interests include power control and energy management in low voltage smart microgrids, islanding detection schemes, modeling and control of single and three phase DG converters.

Publications

Publications (22)
Article
Full-text available
This paper investigates the performance of various power control structures on a series power flow controller comprised as transformerless H-bridge inverter under different operating conditions. This power flow controller connects the main grid with the microgrid as it is seriesly attached with the distribution line. Three different control strateg...
Article
Full-text available
p>Controlling weak grid-connected systems is very challenging. In transient, frequency and voltage oscillations may lead to voltage and/or frequency stability problems and finally lead to system collapse. During steady-state operation and at the point of common coupling (PCC), voltage degradation and grid voltage background harmonics restrict the i...
Article
Full-text available
Network modelling is a critical step in the analysis of distribution networks. It is used to relate the input currents and voltages with the output currents and voltages. This work aims to construct a new admittance matrix for distribution networks. The new admittance matrix is derived based on ABCD matrix, which presents the exact model of differe...
Article
Full-text available
The literature contains different methods for estimating logistic functions parameters to fit the power-speed characteristics of a wind turbine (WT). However, their disadvantages are: (1) they require a large amount of supervisory control and data acquisition data; (2) the parameter range needed for constrained optimization is not systematically det...
Article
Full-text available
The sensitivity analysis becomes particularly critical for voltage stability analysis due to the fluctuation in power outputs of renewable energy resources. Besides, impacts of different load modeling and the operation mode of Distributed Generations (DGs) are not addressed in the well-known sensitivity analysis methods. Therefore, this work presen...
Article
Full-text available
Interfacing a weak grid imposes challenges on distributed generators (DGs). These challenges include transient frequency and voltage dynamics that can destabilize the system. Accordingly, this paper investigates the grid stiffness based on different scenarios and the dynamics of a grid feeding DG connected to a weak grid. Moreover, the dynamic effe...
Article
Full-text available
In case of system contingencies, improving the continuity of the electrical supply by islanding capabilities is of great interest. Besides, reconnecting the power network after an islanding event is also an important issue for maintaining the power system stability. This paper investigates the disconnection and reconnection of a microgrid consistin...
Article
Full-text available
This paper presents a thorough control structure of the distributed generators inside the microgrid during both grid-connected and islanded operation modes. These control structures of the DGs voltage source inverters are implemented in synchronous reference frame (SRF) and controlled using linear PI controllers. By implementing the control structu...
Article
Full-text available
This paper establishes a reliable-economic power sharing scheme of distributed energy system (DES) consists of Li-ion storage battery and photovoltaic (PV) source connected to the utility grid through a distribution feeder. The system is intended to supply a vehicle charging station that requires dense energy production for efficient and short time...
Article
Improving the microgrid fault ride-through capability and enhancing the transient performance of microgrid operation due to voltage sags is of great importance. This paper investigates the ride-through capability and feasibility of integrating a mutual inductance between the main grid and the microgrid under short circuit condition. The fault ride-...
Preprint
A novel variable dc-link voltage technique is proposed to reduce the traction losses for electrical drive applications. A 100-unit cascaded multilevel converter is developed to generate the variable dc-link voltage. Experimental measurement shows that the machine additional losses and IGBT-inverter losses are reduced substantially. The system effic...
Article
Full-text available
Jordan became one of the countries which looking for integrating Photovoltaic energy systems (PV) into power distribution systems. In this study, simulations and analysis were implemented on Irbid District Electrical Company (IDECO) grid to investigate the impact of distributed PV system on the power flow and voltage profile of the distribution net...
Article
This paper presents the bilateral operation of a transformer-less H-bridge inverter as a power flow controller and fault current limiter in low-voltage distribution network. A novel control strategy has been developed to initiate and activate the H-bridge inverter to control the power flow at point of common coupling (PCC). On the other hand, the H...
Conference Paper
This paper discusses the disconnection and reconnection process of a microgrid and series transformerless H-bridge inverter installed at PCC between the utility and the microgrid. When a short circuit event occurs at the grid side, the transformerless H-bridge inverter should be turned off or bypassed depending on the fault location and the microgr...
Article
Full-text available
This paper presents the power flow control between the main grid and the microgrid in low-voltage distribution network using H-bridge inverter. Controlling the real power flow in the line using the H-bridge inverter is investigated by implementing the line current control strategy. The feasibility of the proposed H-bridge inverter and its control s...
Conference Paper
Power flow analysis in power system networks has been widely investigated by several methods to determine the unknown variables at each bus in the system. Moreover, many optimization functions have been integrated with the power flow methods to control the operation of some parameters in the network. In this paper, an overall power flow algorithm i...
Article
This paper presents the power flow control between the main grid and the microgrid in 400 V low-voltage distribution network using series transformerless H-bridge inverter. This series converter is attached directly in series with the line, connecting the main grid and the microgrid with each other. It controls the real power flow depending on the...
Article
The principle of microgrid operation entails that it should be able to operate either grid-connected or isolated in island mode in case of grid disturbances. A microgrid is generally composed of distributed generators (DGs) connected to the main utility grid, usually through controlled voltage source converters. P/V and Q/f droop control technique...

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