Ayman El‐Refaie
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View article: Optimization-Based Distributed Controller for Multi-Agents System in Microgrid Secondary Control
Optimization-Based Distributed Controller for Multi-Agents System in Microgrid Secondary Control Open
Micro-grids function to connect to power system power produced by the renewable energy resources. In islanded micro-grids, grid-forming units collaborate to maintain the micro-grids voltage and frequency by utilizing droop control techniqu…
View article: Electromagnetic Design Optimization Integrated with Mechanical Stress Analysis of PM-Assisted Synchronous Reluctance Machine Topologies Enabled with a Blend of Magnets
Electromagnetic Design Optimization Integrated with Mechanical Stress Analysis of PM-Assisted Synchronous Reluctance Machine Topologies Enabled with a Blend of Magnets Open
Permanent Magnet-Assisted Synchronous Reluctance Machines (PMASynRM) provide a low-cost alternative to Surface PM Machines due to the use of relatively lower grades of rare-earth (RE) or RE-free magnets, as the performance degradation due …
View article: Thermal Management System for an Electric Machine With Additively Manufactured Hollow Conductors With Integrated Heat Pipes
Thermal Management System for an Electric Machine With Additively Manufactured Hollow Conductors With Integrated Heat Pipes Open
Here, this paper discusses steps taken to develop a novel thermal management system for an aircraft propulsion electric machine containing additively manufactured coils integrated with heat pipes aimed at boosting its specific power. Exper…
View article: WEMDCD 2023 Cover Page
WEMDCD 2023 Cover Page Open
View article: A Rewound Five-Phase Synchronous Reluctance Machine: Operating Voltage, Inductance Analysis and Comparison with Conventional Multiphase Machines
A Rewound Five-Phase Synchronous Reluctance Machine: Operating Voltage, Inductance Analysis and Comparison with Conventional Multiphase Machines Open
In the recent literature, a rewinding approach was proposed to construct a rewound five-phase machine with either star-connected or combined star-pentagon winding using existing off-the-shelf three-phase stator frames. The power per phase …
View article: Contributor Page
Contributor Page Open
View article: A Practical Approach to Identify the Phases Sequence in Five Phase Machines with Combined Star–Pentagon Configuration
A Practical Approach to Identify the Phases Sequence in Five Phase Machines with Combined Star–Pentagon Configuration Open
Due to the significant advantages of a high torque density, better fault tolerance and high efficiency, the combined star–pentagon winding has recently gained researchers’ interest. In this paper, a simple method to identify the sequence o…
View article: Thermal Management System for an Electric Machine with Additively Manufactured Hollow Conductors with Integrated Heat Pipes
Thermal Management System for an Electric Machine with Additively Manufactured Hollow Conductors with Integrated Heat Pipes Open
This paper discusses steps taken to size a thermal management system for an aircraft propulsion electric machine containing additively manufactured coils integrated with heat pipes aimed at boosting its specific power. Experimental setups …
View article: Simulation Versus Experimental Verification [Society News]
Simulation Versus Experimental Verification [Society News] Open
View article: Investigation of a 3D-Magnetic Flux PMSM With High Torque Density for Electric Vehicles
Investigation of a 3D-Magnetic Flux PMSM With High Torque Density for Electric Vehicles Open
This paper presents an investigation of a 3D-magnetic flux permanent magnet synchronous motor (3D-MF PMSM) used for electric vehicle applications. The investigated 3D-MF PMSM consists of an integrated radial-flux and axial-flux structure. …
View article: Evaluation of a Contra-Rotating Flux- Modulated Machine Featured With Dual Flux-Modulation for Wind Power Generation
Evaluation of a Contra-Rotating Flux- Modulated Machine Featured With Dual Flux-Modulation for Wind Power Generation Open
This paper presents an investigation of an integrated flux-modulated machine for wind power generation. This machine has two rotors which function as two contra-rotating rotors connected to two sets of turbine blades. Hence, compared to co…
View article: Magnetic Gears and Magnetically Geared Machines with Reduced Rare-Earth Elements for Vehicle Applications
Magnetic Gears and Magnetically Geared Machines with Reduced Rare-Earth Elements for Vehicle Applications Open
This paper covers a new emerging class of electrical machines, namely, Magnetic Gears (MGs) and Magnetically Geared Machines (MGMs). This particular kind of gears/machines is capable of either scaling up or down the revolutions-per-minute …
View article: High-Resistance Connection Diagnosis in Five-Phase PMSMs Based on the Method of Magnetic Field Pendulous Oscillation and Symmetrical Components
High-Resistance Connection Diagnosis in Five-Phase PMSMs Based on the Method of Magnetic Field Pendulous Oscillation and Symmetrical Components Open
An online approach for diagnosing high-resistance connection (HRC) faults in five-phase permanent magnet synchronous motor drives is presented in this article. The development of this approach is based on a so-called “magnetic field pendul…
View article: IEEE Access Special Section Editorial: Advanced Energy Conversion Systems Based on Multi-Port Electrical Machines
IEEE Access Special Section Editorial: Advanced Energy Conversion Systems Based on Multi-Port Electrical Machines Open
Over the last decade, with the merits of high efficiency, compactness, and flexibility, energy conversion systems based on multiple-electrical-port and multiple-mechanicalport electrical machines have attracted widespread attention from bo…
View article: A New Configuration of Paralleled Modular ANPC Multilevel Converter Controlled by an Improved Modulation Method for 1 MHz, 1 MW EV Charger
A New Configuration of Paralleled Modular ANPC Multilevel Converter Controlled by an Improved Modulation Method for 1 MHz, 1 MW EV Charger Open
In this work, a new configuration of the modular multilevel converter (MLC) based on the parallel connection of three-level active-neutral-point-clamped (3L-ANPC) cells as well as its improved modulation method is proposed for 1 MHz, 1 MW …
View article: Modeling and Experimental Verification of an Unconventional 9-Phase Asymmetric Winding PM Motor Dedicated to Electric Traction Applications
Modeling and Experimental Verification of an Unconventional 9-Phase Asymmetric Winding PM Motor Dedicated to Electric Traction Applications Open
Multi-phase permanent magnet motors are becoming popular in various applications such as high power traction which require low cogging and torque ripple, and reduced noise and vibration. This paper presents the development process of a ful…
View article: Role of advanced materials in electrical machines
Role of advanced materials in electrical machines Open
There has been a revived and growing role for electrical machines and drives across a wide range of applications. Such applications include, hybrid/electrical traction applications, aerospace applications, and renewable energy. All these a…
View article: Electrical machines for harsh environments
Electrical machines for harsh environments Open
There have been several megatrends over the past several years that have been driving research activities in the area of electrical machines and drives. These include transportation electrification (land vehicles, aerospace, ships, locomot…
View article: High specific power electrical machines: A system perspective
High specific power electrical machines: A system perspective Open
There has been a growing need for high specific power electrical machines for a wide range of applications. These include hybrid/electric traction applications, and aerospace applications. A lot of work has been done to accomplish signific…
View article: Comparison of traction motors that reduce or eliminate rare‐earth materials
Comparison of traction motors that reduce or eliminate rare‐earth materials Open
Important global efforts are underway toward lowering the cost of electric machines for electric and hybrid vehicles by reducing or eliminating the use of rare earth materials which have been experiencing significant price increases and vo…
View article: Conceptual design of sleeve rotor synchronous reluctance motor for traction applications
Conceptual design of sleeve rotor synchronous reluctance motor for traction applications Open
Synchronous reluctance machines are very appealing for high speed traction motor design due to their robustness, simple structure, absence of magnets, and simple control. The absence of magnets means that synchronous reluctance (SynRel) ma…