52 hasil untuk "Peter Sergeant"
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Artikel Jurnal Teks lengkap
Thermally Induced Mechanical Stress in the Stator Windings of Electrical Machines
The lifetime of an electrical machine mainly depends on the thermal overloading. Modern day applications of electrical machines on one hand require compact machines with high power density, while on the other hand force electrical machines to undergo frequent temperature cycling. Until recently, in…
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Artikel Jurnal Teks lengkap
Development of Correlations for Windage Power Losses Modeling in an Axial Flux Permanent Magnet Synchronous Machine with Geometrical Features of the Magnets
In this paper, a set of correlations for the windage power losses in a 4 kW axial flux permanent magnet synchronous machine (AFPMSM) is presented. In order to have an efficient machine, it is necessary to optimize the total electromagnetic and mechanical losses. Therefore, fast equations are needed…
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Artikel Jurnal
Analyzing Flux-Switching and Vernier Permanent Magnet Machines Through Field Harmonic Theory: A Comparative Study
Flux-switching permanent magnet (FSPM) and permanent magnet Vernier (PMV) machines have several similarities, such as the utilization of the modulation flux to obtain the back electromotive force (back-EMF), high torque at low speed and negligible reluctance torque. The arrangement of the magnets…
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Artikel Jurnal Teks lengkap
Mitigation of High-Frequency Eddy Current Losses in Hairpin Winding Machines
In high-speed and high-frequency electric machines, one of the major issues that impacts the performance and capability of a machine is the high-frequency eddy current losses in the windings. This work deals with AC winding losses in flat rectangular conductors. Aiming for eddy current loss…
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Artikel Jurnal Teks lengkap
Non-Destructive Electromagnetic Evaluation of Material Degradation Due to Steel Cutting in a Fully Stacked Electrical Machine
Although it is well known that the magnetic properties of electrical steel can be deeply affected by the cutting process, it is still not clear how to accurately evaluate these effects on a prototyped machine on its final shape, especially at a high frequency or a high power rating. This research…
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Artikel Jurnal Teks lengkap
Advanced Manufacturability of Electrical Machine Architecture through 3D Printing Technology
The rapid evolution of electric machines requires innovative approaches to boost performance, efficiency, and sustainability. Additive Manufacturing (AM) has emerged as a transformative technique, reshaping the landscape of electric machine components, ranging from magnetic materials to windings…
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Artikel Jurnal Teks lengkap
Multi-Physics Study of Hairpin Winding Cooling Systems in Less-Rare-Earth Permanent Magnet Traction Motors
Hairpin windings are increasingly adopted in permanent magnet (PM) traction machines owing to their high slot fill factor, compact end-winding structure, and suitability for automated manufacturing. However, limited heat dissipation and high copper losses under peak loading and high-frequency…
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Artikel Jurnal Teks lengkap
Bearing Current and Shaft Voltage in Electrical Machines: A Comprehensive Research Review
The reliability assessment of electric machines plays a very critical role in today’s engineering world. The reliability assessment requires a good understanding of electric motors and their root causes. Electric machines mostly fail due to mechanical problems and bearing damage is the main source…
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Artikel Jurnal Teks lengkap
Metal Additive Manufacturing for Electrical Machines: Technology Review and Latest Advancements
Metal additive manufacturing (AM) has been growing remarkably in the past few years. Thanks to the advantages of unmatched flexibility and zero material waste, this clean technology opens the door for new design solutions with greater material efficiency, which are not possible through conventional…
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Artikel Jurnal Teks lengkap
Electrical Machines Winding Technology: Latest Advancements for Transportation Electrification
The ever-increasing demand for higher-power dense electrical machines has resulted in different electrical, mechanical, and thermal stresses, which can eventually cause machine failure. For this reason, the management of stresses and losses must be thoughtfully investigated to have a highly…
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Artikel Jurnal Teks lengkap
Development of Novel Semi-Stranded Windings for High Speed Electrical Machines Enabled by Additive Manufacturing
Recent advances in electrical machines and energy storage technologies make electric vehicles (EVs) feasible replacements to conventional internal combustion engines. One of the main challenges of high speed electrical machines is providing maximum output power with minimum energy losses, weight…
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Artikel Jurnal
Multi-Agent Position Estimation in Modular Motor Drives Using Low-Resolution Sensors
Because a modular motor drive is composed of multiple identical pole drive units and controllers, it can be considered as a multi-agent system. This makes modular motor drives particularly interesting during faults, when the remaining healthy agents assure the continuity of operation. Nevertheless…
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Artikel Jurnal Teks lengkap
Design, Modelling and Optimization of a High Power Density Axial Flux SRM with Reduced Torque Ripple for Electric Vehicles
Switched reluctance machines (SRMs) are potential candidates for use in the propulsion systems of electric vehicles. However, they suffer from low power density and high torque ripple. In this paper, a segmented rotor double-sided axial flux SRM (DSAFSRM) is chosen for detailed analysis. A hybrid…
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Artikel Jurnal Teks lengkap
Simple Design Approach for Low Torque Ripple and High Output Torque Synchronous Reluctance Motors
The rotor design of Synchronous Reluctance Motors (SynRMs) has a large effect on their efficiency, torque density and torque ripple. In order to achieve a good compromise between these three goals, an optimized rotor geometry is necessary. A finite element method (FEM) is a good tool for the…
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Artikel Jurnal Teks lengkap
Comparison of Drivetrain Topologies for an Ankle Gait Cycle
Powered prosthesis actuation is a field where energy efficiency and mass are important characteristics. The motion requirements of high torque at low speed and low torque at high speed are difficult to effectively combine in a single electric motor. A possibility is to use an oversized direct–drive…
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Artikel Jurnal Teks lengkap
Mathematical Design and Analysis of Three-Phase Inverters: Different Wide Bandgap Semiconductor Technologies and DC-Link Capacitor Selection
This paper introduces a mathematical design and analysis of three-phase inverters used in electric drive applications such as aerospace, electric vehicles, and pumping applications. Different wide bandgap (WBG) semiconductor technologies are considered in this analysis. Using SiC MOSFETs and Si…
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Artikel Jurnal Teks lengkap
Power Loss Analysis of a Five-Phase Drive System Using a Synchronous Reluctance Motor and an Indirect Matrix Converter with Reduced Switching Losses
This paper introduces and analyzes the power losses of a five-phase drive system based on an indirect matrix converter (IMC) and a five-phase synchronous reluctance motor (SynRM). The different loss components in the power converter and the motor have been discussed and analyzed. Moreover, a…
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Artikel Jurnal Teks lengkap
Analytical Modeling of Static Eccentricities in Axial Flux Permanent-Magnet Machines with Concentrated Windings
The aim of this paper is to calculate the static eccentricity (SE) of a double rotor axial flux permanent magnet (AFPM) machine by using a general analytical model. The flux density in the air gap under healthy conditions is calculated firstly, where the axial and circumferential magnetic flux…
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Artikel Jurnal Teks lengkap
Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding
This paper compares four prototype Synchronous Reluctance Motors (SynRMs) having an identical geometry of iron lamination stacks in the stator and rotor. Two different stator winding layouts are employed: a conventional three-phase star connection and a combined star–delta winding. In addition, two…
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Artikel Jurnal
Novel Asymmetric IPM Rotor Design Using Cascaded Multiphysics Topology Optimization
Sustainable motor design is crucial for improving energy efficiency and reducing material consumption. This paper introduces a novel asymmetric interior permanent magnet (IPM) rotor design using topology optimization (TO). The study employs a two-stage TO approach to design IPM rotor. In the first…