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Journal articles on the topic 'High-speed electrical machine'

Author: Grafiati

Published: 28 June 2021

Last updated: 1 February 2022

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1

Wang, Jing, and Ming Gui Zhou. "Processing Stability Analysis of Wire Cut Electric Discharge Machine with High Speed." Applied Mechanics and Materials 443 (October 2013): 74–78. http://dx.doi.org/10.4028/www.scientific.net/amm.443.74.

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In this article, unstable factor analysis is done in Wire cut electric discharge machine with high speed (WEDM HS), which focus on effect of processing Stability from electrical processing parameters, machine parameters, electrode wire, cutting fluid and conductive block, and how to adjust and excluding factors in order to enhance WEDM processing stability ,ensure machine parts surface quality, dimensional accuracy and processing efficiency.

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Zhang, X., Y. Ueyama, T. Shinshi, Akira Shimokohbe, T. Sato, H. Miyake, and T. Nakagawa. "High-Speed and High-Accuracy EDM of Micro Holes by Using a 5-DOF Controlled Maglev Local Actuator." Materials Science Forum 626-627 (August 2009): 255–60. http://dx.doi.org/10.4028/www.scientific.net/msf.626-627.255.

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The objective of this study is to realize high-speed and high-accuracy electrical discharge machining (EDM) of micro holes using a combination of a conventional EDM machine and a maglev local actuator. In this paper, the conventional EDM machine and the wide-bandwidth, high-precision, 5-DOF controlled maglev local actuator are combined and cooperatively controlled. Then to accelerate the debris ejection from the machined holes, the driving methods of the axial jump and radial vibration of the electrode are discussed. The experimental results show that the maglev local actuator can adjust the gap between the electrode and a workpiece speedily, and the machining speed is improved by 434.2%, compared with conventional EDM machine. Moreover, by the jump and the circular motion of the electrode, the debris ejection can be accelerated, the abnormal electrical discharge can be avoided, and the machining speed also is improved by 580.3%.

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Dehnavifard, Hossein, Ghadir Radman, and Mohamedreza Kalyan. "Design and Comparison of High-Speed Induction Machine and High-Speed Interior Permanent Magnet Machine." International Review on Modelling and Simulations (IREMOS) 11, no. 3 (June 30, 2018): 151. http://dx.doi.org/10.15866/iremos.v11i3.14112.

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Smirnov, Alexander, Nikita Uzhegov, Teemu Sillanpaa, Juha Pyrhonen, and Olli Pyrhonen. "High-Speed Electrical Machine with Active Magnetic Bearing System Optimization." IEEE Transactions on Industrial Electronics 64, no. 12 (December 2017): 9876–85. http://dx.doi.org/10.1109/tie.2017.2716875.

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Jumayev, Sultan, Aleksandar Borisavljevic, Konstantin Boynov, Juha Pyrhönen, and Elena A. Lomonova. "Inductance calculation of high-speed slotless permanent magnet machines." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 34, no. 2 (March 2, 2015): 413–27. http://dx.doi.org/10.1108/compel-08-2014-0207.

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Purpose – The purpose of this paper is to give a simple, fast and universal inductance calculation approach of slotless-winding machines and comparison of inductances of toroidal, concentrated and helical-winding machines, since these winding types are widely used among low-power PM machines. Design/methodology/approach – Harmonic modeling approach is applied to model the magnetic field of the windings in order to calculate the synchronous inductances. The method is based on distinction between electromagnetic properties of different regions in the machine where each region is represented by its own governing equation describing the magnetic field. The governing equations are obtained from Maxwell’s equations by introducing vector potential in order to simplify the calculations. Findings – Results of the inductances of toroidal, concentrated and helical-winding slotless PM machines, which have the same torque and dimensions, obtained by the proposed analytical method are in good agreement with 3D FEM, where the relative difference is smaller than 15 percent. However, the calculation time of the analytical method is significantly less than in 3D FEM: seconds vs hours. Additionally, from the results it is concluded that the toroidal-winding machine has the highest inductance and DC resistance values among considered machines. Helical-winding machine has lowest inductance and DC resistance values. Inductance of concentrated-winding machine is between inductance of helical and toroidal windings; however, DC resistance of the concentrated windings is comparable with resistance toroidal windings. Originality/value – In this paper the inductance calculation based on harmonic modeling approach is extended for toroidal and helical-winding machines which makes the method applicable for most of the slotless machine types.

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Koike, Nobuhiko, Kenji Ohmori, and Tohru Sasaki. "HAL: A High-Speed Logic Simulation Machine." IEEE Design & Test of Computers 2, no. 5 (October 1985): 61–73. http://dx.doi.org/10.1109/mdt.1985.294819.

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7

Liu, Xiping, Dong Chen, Liang Yi, Chao Zhang, and Min Wang. "Comparison and Analysis of Magnetic-Geared Permanent Magnet Electrical Machine at No-Load." Archives of Electrical Engineering 63, no. 4 (December 11, 2014): 683–92. http://dx.doi.org/10.2478/aee-2014-0047.

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Abstract Magnetic-geared permanent magnet (MGPM) electrical machine is a new type of machine by incorporating magnetic gear into PM electrical machine, and it may be in operation with low-speed, high-torque and direct-driven. In this paper, three types of MGPM machines are present, and a quantitative comparison among them is performed by finite element analysis (FEA). The magnetic field distribution, stable torque and back EMF are obtained at no-load. The results show that three types of MGPM machine are suitable for different application fields respectively according to their own advantages, such as high torque and back EMF, which form an important foundation for MGPM electrical machine research.

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8

Belahcen, Anouar, Floran Martin, Mohammed El-Hadi Zaim, Emad Dlala, and Zlatko Kolondzovski. "Combined FE and Particle Swarm algorithm for optimization of high speed PM synchronous machine." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 34, no. 2 (March 2, 2015): 475–84. http://dx.doi.org/10.1108/compel-07-2014-0168.

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Purpose – The purpose of this paper is to optimize the stator slot geometry of a high-speed electrical machine, which is used as an assist for a turbocharger. Meanwhile, the suitability of the Particle Swarm algorithm for such a problem is to be tested. Design/methodology/approach – The starting point of the optimization is an existing design, for which the Particle Swarm algorithm is applied in conjunction with the transient time-stepping 2D finite element method. Findings – It is found that regardless of its stochastic nature, the Particle Swarm work well for the optimization of electrical machines. The optimized design resulted in an increase of the slot area and increase of the iron loss, which was compensated by a dramatic decrease in the Joule losses. Research limitations/implications – The optimization was concentrated on the stator design whereas the rotor dimensioning was carried out withing the compressor and turbine design. Originality/value – A turbocharger with electric assist is designed optimized and manufactured. The Particle Swarm algorithm is shown to be very stable.

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Wardach, Marcin, Ryszard Palka, Piotr Paplicki, and Michal Bonislawski. "Novel hybrid excited machine with flux barriers in rotor structure." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 4 (July 2, 2018): 1489–99. http://dx.doi.org/10.1108/compel-08-2017-0364.

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Purpose Permanent magnet (PM) electrical machines are becoming one of the most popular type of the machines used in electrical vehicle drive applications. The main drawback of permanent magnet machines, despite obvious advantages, is associated with the flux control capability, which is limited at high rotor speeds of the machine. This paper aims to present a new arrangement of permanent magnets and flux barriers in the rotor structure to improve the field weakening control of hybrid excited machines. The field weakening characteristics, back-emf waveforms and efficiency maps of this novel machine have been reported. Design/methodology/approach In the study, finite element analysis was used to perform simulation research. Then, based on the simulation studies, an experimental model was built. The paper also presents selected experimental results. Findings Obtained results show that the proposed machine topology and novel control strategy can offer an effective flux control method allowing to extend the maximal rotational speed of the machine at constant power range. Practical implications The proposed solution can be used in electric vehicles drive to extend its torque and speed range. Originality/value The paper presents original design and results of research on a new solution of a hybrid excited machine with magnetic barriers in a rotor.

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10

Vuddanti, Sandeep, Vinod Karknalli, and Surender Reddy Salkuti. "Design and comparative analysis of three phase, four phase and six phase switched reluctance motor topologies for electrical vehicle propulsion." Bulletin of Electrical Engineering and Informatics 10, no. 3 (June 1, 2021): 1495–504. http://dx.doi.org/10.11591/eei.v10i3.3054.

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Switched reluctance motor (SRM) is attracting the scientific community in recent days because of its special structural benefits. Good research work has been conducted on this machine since the ages. It has evolved as an alternative to the conventional electrical machines in variable speed drives due to rugged architecture, high-speed operation, four quadrants, lack of magnet, and adaptability to harsh surroundings. This paper reviews different topologies of SRM for electric vehicle (EV) application and a comparative study of suitable machines for electric vehicle propulsion. This paper elaborates on the design methodology and the analysis of various phases of operation of SRMs. During the design procedure, the finite element method (FEM) of optimization is used to enhance motor performance. In this study, the three different phase (3, 4 6) motors are analyzed in machine design software and finite element analysis outcomes and SRM simulation approach are discussed.

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Wu, Yu Hou, and Li Xiu Zhang. "Analysis about Vibration and Noise of Ceramic Electrical Spindle." Advanced Materials Research 189-193 (February 2011): 1696–99. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1696.

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High speed machining (HSM) technology is used in a broad range of applications to machine ferrous metals and nonmetallic material. The electrical spindle is one of the major elements to keep the machine running at high productivity. In recently years, the requirement of rotational speed and rigidity of electrical spindle is getting higher and higher in order to satisfy the high speed processing. So a high speed grinding electrical spindle equipped with hot isostatic pressed silicon nitride (HIPSN) fully-ceramic ball bearings without inner rings and yttria partially stabilized tetragonal zirconia polycrystal (Y-TZP) ceramic spindle shaft is designed for higher speed and rigidity. Because the processing precision is relevant to the vibration of electrical spindle, it is necessary the vibration and noise of the ceramic electrical spindle is detected. This paper presents results of vibration and noise of the ceramic electrical spindle and analysis the reason of phenomenon. The analysis shows the vibration and noise of the ceramic electrical spindle is up to the standard.

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12

Kashima, Hideki, Hitoshi Hongo, Kunihito Kato, and Kazuhiko Yamamoto. "High Speed Iris Detection Method for Man-Machine Interface." IEEJ Transactions on Fundamentals and Materials 123, no. 4 (2003): 346–52. http://dx.doi.org/10.1541/ieejfms.123.346.

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13

Inari, Takahiko, Keiji Nagamine, Noriyuki Tomimatu, and Ichiro Handa. "Development of the High Speed Bottle Finish Inspection Machine." IEEJ Transactions on Electronics, Information and Systems 107, no. 5 (1987): 443–49. http://dx.doi.org/10.1541/ieejeiss1987.107.5_443.

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14

Huang, Ziyuan, and Yun Le. "Rotordynamics modelling and analysis of high‐speed permanent magnet electrical machine rotors." IET Electric Power Applications 12, no. 8 (March 29, 2018): 1104–9. http://dx.doi.org/10.1049/iet-epa.2017.0739.

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15

Hu, Bo, Christopher Lim, Song Lin Ding, M. Zulafif Rahim, Milan Brandt, and John Mo. "Experimental Study of Wheel Rotating Speed Effect on Electrical Discharge Grinding." Applied Mechanics and Materials 697 (November 2014): 275–79. http://dx.doi.org/10.4028/www.scientific.net/amm.697.275.

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Electrical discharge grinding is used to machine polycrystalline diamond layer of cutting tools, which can effectively drill composite/titanium stacks in modern aircraft frames. In the machine, an electrode wheel is rotated to accelerate debris flushing to quickly recover the dielectric fluid between a spark gap. The aim of this study was to investigate the effect of the wheel speed on polycrystalline diamond removal rate for high erosion efficiency. Multiple wheel speeds were applied in a electrical discharge grinding machine under various pulse on-times and the volumetric removal rates were calculated by the precise position feedback of this machine over the time, which was obtained by the electrical waveform of discharges. The experimental results show that the removal rate increases with the wheel speed up to a limit at the low range and then declines at the high range. This indicates that the wheel speed needs to be optimized for high erosion efficiency under various discharge conditions such as different materials and pulse on-times.

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Bae, Jong-Nam, Grace Firsta Lukman, Jin-Woo Ahn, and Dong-Hee Lee. "Variable speed reference control of a high-speed BLDC motor for a blender machine." IET Electric Power Applications 14, no. 11 (November 1, 2020): 2154–62. http://dx.doi.org/10.1049/iet-epa.2020.0078.

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Yu, Wenfei, Wei Hua, and Zhiheng Zhang. "High-Frequency Core Loss Analysis of High-Speed Flux-Switching Permanent Magnet Machines." Electronics 10, no. 9 (May 2, 2021): 1076. http://dx.doi.org/10.3390/electronics10091076.

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Accurate prediction of core losses plays an important role in the design and analysis of flux-switching permanent magnet (FSPM) machines, especially during high-speed and high-frequency operation. Firstly, based on the numerical method, a high-frequency core loss prediction method considering a DC-bias magnetization component and local hysteresis loops as well as the harmonic effect is proposed. Secondly, the magnetizing characteristics of the silicon steel sheet and, consequently, the core loss of the electrical steel used as the core lamination are measured. Then, the loss coefficient of each core loss component is obtained by the data fitting tool. Based on the proposed method, the stator and rotor core losses of a three-phase, 12-stator-slot, and 10-rotor-pole (12/10) FSPM machine with different soft iron materials and driving modes are calculated. Finally, the results of the numerical method are verified by conventional finite element analysis.

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Ikaheimo, Jouni, Jere Kolehmainen, Tero Kansakangas, Ville Kivela, and Reza R. Moghaddam. "Synchronous High-Speed Reluctance Machine With Novel Rotor Construction." IEEE Transactions on Industrial Electronics 61, no. 6 (June 2014): 2969–75. http://dx.doi.org/10.1109/tie.2013.2253077.

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Ding, Hong Chang, and Lin Jing Xiao. "The Strength Analysis of Rotor Sleeve and PM for High-Speed Electrical Machine." Advanced Materials Research 338 (September 2011): 477–80. http://dx.doi.org/10.4028/www.scientific.net/amr.338.477.

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For high-speed permanent magnet (PM) electrical machine, the PM material has very small tensile stress, and it can’t withstand the huge centrifugal force. So, a high-strength sleeve with interference fit is necessary to protect the PM. This paper mainly analyzes the strength of rotor sleeve and PM. It deduces the theoretical calculation method of the strength according to Lame equation, and it also analyzes the stress of sleeve and PM by ANSYS Workbench. The result show that the theoretical calculation value is closely to the ANSYS result, and it can meet the requirements of protecting the permanent magnet in high rotation speed.

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20

Gerlach, Martin Enno, Maximilian Zajonc, and Bernd Ponick. "Mechanical stress and deformation in the rotors of a high-speed PMSM and IM." e & i Elektrotechnik und Informationstechnik 138, no. 2 (March 2, 2021): 96–109. http://dx.doi.org/10.1007/s00502-021-00866-5.

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AbstractHigh-speed electric machines are gaining importance in the field of traction drives and aviation due to their high power density. The evaluation of the mechanical stress in the rotor is one crucial part in the design process for this type of machines. The mechanical stress cannot be measured directly. Accordingly, a validation of the calculated mechanical stress is difficult and normally not performed. Instead of the mechanical stress, the deformation at the rotor surface can be measured using a spin test machine with distance sensors. The deformation can then be used to validate the calculation results.In this paper, the mechanical load exerted on an IM rotor for a $60\,\text{kW}/20000\,\frac{1}{\text{min}}$ 60 kW / 20000 1 min high-speed electric machine and an PMSM rotor for a $75~\text{kW}/25000\,\frac{1}{\text{min}}$ 75 kW / 25000 1 min high-speed electric machine is analysed in detail. The mechanical stress and the deformation are calculated and analysed using a FEM simulation model. Then, a spin test is performed on the two rotors. First, the burst speed is determined by operating two rotor samples above their defined test speed. Then, the deformation is measured at the rotor surface for different operating speeds and the defined test speed. The measurement and the simulation results are compared and discussed.It can be shown that the two designs do not exceed the maximum mechanical stress for the defined operating range. In the deformation measurement of the IM rotor, a plastic deformation up to $\varepsilon _{\text{IM, pl}} = 8$ ε IM, pl = 8 μm and elastic deformation up to $\varepsilon _{\text{IM, el}}=22$ ε IM, el = 22 μm can be seen. In regards to plastics, PMSM rotor expands up to $\varepsilon _{\text{PMSM, pl}}= 5$ ε PMSM, pl = 5 μm. The maximum elastic deformation of the PMSM rotor is $\varepsilon _{\text{PMSM, el}}=40$ ε PMSM, el = 40 μm. The comparison of the calculated and the measured elastic deformation shows good accordance for the two rotor types. Both models are capable of describing the deformation and the state of stress in the rotors. In burst tests, both rotors withstand rotational speeds far above the defined test speed.

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Lee, Sung-hyun, Noman Baloch, and Byung-il Kwon. "Design and analysis of a double consequent pole changing vernier machine." International Journal of Applied Electromagnetics and Mechanics 64, no. 1-4 (December 10, 2020): 941–49. http://dx.doi.org/10.3233/jae-209408.

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This paper proposes a double consequent pole changing vernier machine (DCPCVM) which adopts double consequent pole and flux modulation configuration. The proposed machine combines a vernier machine and a permanent magnet synchronous machine (PMSM) in a single topology. Therefore, the advantages of both machines can be realized in a single topology. The proposed machine provides high torque at low speed while operating in vernier mode whereas it operates in PMSM mode at high speed to avoid the disadvantages of vernier machines at high speeds such as high core losses. Parametric analysis of the proposed machine is performed to show the effect of the main variables on the electromagnetic characteristics of the machine. A finite element method (FEM) analysis is conducted, and meaningful conclusions are drawn.

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Huo, Meng You, Jin Quan Xu, Jian Hua Zhang, Xing Ai, and Yu Jing Hu. "Development of PMAC-Based Multifunctional Combined CNC Machine." Materials Science Forum 471-472 (December 2004): 830–33. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.830.

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This paper presents a PMAC-based combined CNC machine that integrates technologies of ultrasonic machining, electrical discharge machining and high speed grinding. As a multifunctional machine, it can provide diverse machining methods for different materials. For hard and brittle materials, it can conduct ultrasonic machining and high-speed grinding respectively or in a combined form; for conductive hard and brittle materials, electrical discharge machining with or without ultrasonic vibration could be implemented. Driven by AC servomotors, the mechanical structure of the vertical machine is mainly composed of a cross workbench for work piece handling, and a spindle head for tool feeding or high speed rotating. Besides those mentioned above, the system management program, the pulse power generator as well as the ultrasonic generator are also analyzed in this paper. Experimental results show that this machine has a wide range of application indeed and is suitable for various materials processing.

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Nardo, Mauro Di, Giovanni Lo Calzo, Michael Galea, and Chris Gerada. "Design Optimization of a High-Speed Synchronous Reluctance Machine." IEEE Transactions on Industry Applications 54, no. 1 (January 2018): 233–43. http://dx.doi.org/10.1109/tia.2017.2758759.

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Karthaus, Jan, Benedikt Groschup, Robin Krüger, and Kay Hameyer. "Mechanical stress distribution and the utilisation of the magneto-elastic effect in electrical machines." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 4 (July 1, 2019): 1085–97. http://dx.doi.org/10.1108/compel-10-2018-0387.

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Purpose Due to the increasing amount of high power density high-speed electrical machines, a detailed understanding of the consequences for the machine’s operational behaviour and efficiency is necessary. Magnetic materials are prone to mechanical stress. Therefore, this paper aims to study the relation between the local mechanical stress distribution and magnetic properties such as magnetic flux density and iron losses. Design/methodology/approach In this paper, different approaches for equivalent mechanical stress criteria are analysed with focus on their applicability in electrical machines. Resulting machine characteristics such as magnetic flux density distribution or iron are compared. Findings The study shows a strong influence on the magnetic flux density distribution when considering the magneto-elastic effect for all analysed models. The influence on the iron loss is smaller due to a high amount of stress-independent eddy current loss component. Originality/value The understanding of the influence of mechanical stress on dimensions of electrical machines is important to obtain an accurate machine design. In this paper, the discussion on different equivalent stress approaches allows a new perspective for considering the magneto-elastic effect.

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Loginov, Sergei, Yulia Domracheva, Vadim Smirnov, and Dmitriy Fedorov. "Research of Radial Forces and Torque of Bearingless Synchronous Machine." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2015): 128. http://dx.doi.org/10.17770/etr2015vol1.217.

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<p class="R-AbstractKeywords"><span lang="EN-US">Bearingless synchronous machine (BSM) is an electrical machine which rotor is suspended by electromagnetic forces (not ball bearings). It allows achieving ultra-high rotation speed and significantly extending area of electric drive application. Nowadays there are different variants of the machines with the structural design and the searching of optimal solution is going on.</span></p><p class="R-AbstractKeywords"><span lang="EN-US"> The basic calculation parameters of bearingless machines are radial forces that can withstand the rotor from external load and torque produced on the shaft. This article describes the theoretical results based on a computer model that produces the finite element method and experimental study of the BSM prototype.</span></p>

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Ismagilov, Flur, Vyacheslav Vavilov, Valentina Ayguzina, and Vladimir Bekuzin. "New Method of Optimal Design of Electrical Rotating Machines." Indonesian Journal of Electrical Engineering and Computer Science 5, no. 3 (March 1, 2017): 479. http://dx.doi.org/10.11591/ijeecs.v5.i3.pp479-487.

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The article presents a new method of the optimal design of the electrical rotating machine based on genetic algorithm. The mathematical description of the proposed algorithm is developed, and the optimal design of the high-speed electrical rotating machine by proposed method is performed. A new method for optimal design allows obtaining a new electrical rotating machine which mass is lower than mass of the initial electrical rotating machine by two times; the value of the rotor active length is lower by 2.37 times and the current density is higher by 1.7 times in comparison with the initial electrical rotating machine. The losses are increased by only 25 percent (power, rotation frequency and materials of both electrical rotating machine are the same).

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Papini, Luca, Tsarafidy Raminosoa, David Gerada, and Chris Gerada. "A High-Speed Permanent-Magnet Machine for Fault-Tolerant Drivetrains." IEEE Transactions on Industrial Electronics 61, no. 6 (June 2014): 3071–80. http://dx.doi.org/10.1109/tie.2013.2282604.

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Peterson, James B., and Peter M. Athanas. "High-speed 2-D convolution with a custom computing machine." Journal of VLSI signal processing systems for signal, image and video technology 12, no. 1 (January 1996): 7–19. http://dx.doi.org/10.1007/bf00936943.

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Jones, W. D., and A. R. Fletcher. "Electric Drives on the LV100 Gas Turbine Engine." Journal of Engineering for Gas Turbines and Power 116, no. 2 (April 1, 1994): 411–17. http://dx.doi.org/10.1115/1.2906836.

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The LV100 gas turbine engine is being developed for U.S. Army ground vehicle use. A unique approach for controls and accessories is being used whereby the engine has no accessory gearbox. Instead a high-speed starter/generator is mounted directly on the compressor shaft and powers all engine accessories as well as supplies the basic electrical power needs of the vehicle. This paper discusses the evolution of the electrically driven LV100 accessory system starting with the Advanced Integrated Propulsion System (AIPS) demonstrator program, through the current system to future possibilities with electric vehicle propulsion. Issues in electrical vehicle propulsion are discussed including machine type, electrical power type, and operation with a gas turbine.

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Li, Xiao Bei, Jing Zhao, and Zhen Chen. "Application of Soft Magnetic Composite Material in the Field of Electrical Machines." Applied Mechanics and Materials 380-384 (August 2013): 4299–302. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.4299.

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The property of the soft magnetic composite (SMC) material is introduced. Take the traditional material used for electric machine, i.e. the silicon steel lamination, as the reference, this paper summarizes the application advantages of SMC in the typical electric machine, such as tubular permanent-magnet liner machine, high-speed permanent-magnet machine, claw-pole machine, axial flux permanent-magnet machine and radial flux permanent-magnet machine. SMC material has much applied potential in the field of electric machine.

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Guan, Y., Z. Q. Zhu, I. A. A. Afinowi, J. C. Mipo, and P. Farah. "Comparison between induction machine and interior permanent magnet machine for electric vehicle application." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 35, no. 2 (March 7, 2016): 572–85. http://dx.doi.org/10.1108/compel-02-2015-0110.

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Purpose – The purpose of this paper is to make a quantitative comparison between induction machine (IM) and interior permanent magnet machine (IPM) for electric vehicle applications, in terms of electromagnetic performance and material cost. Design/methodology/approach – The analysis of IM is based on an analytical method, which has been validated by test. The analysis of IPM is based on finite element analysis. The popular Toyota Prius 2010 IPM is adopted directly, and the IM is designed with the same stator outer diameter and stack length as Prius 2010 IPM for a fair comparison. Findings – The torque capability of IM is lower than IPM for low electric loading and competitive to IPM for high electric loading. The maximum torque/power-speed characteristic of IM is competitive to IPM; while the rated torque/power-speed characteristic of IM is poorer than IPM. The power factor of IM is competitive and even better than IPM for high electric loading in low-speed region. The torque ripple of IM is comparable to IPM for high electric loading and much lower than IPM for low electric loading. The overall efficiency of IM is lower than IPM, and the maximum efficiency of copper squirrel cage IM is approximately 2-3 percent lower than IPM. The material cost of IM is about half of IPM when IM and IPM are designed with the same stator outer diameter and stack length. Originality/value – The electromagnetic performances and material costs of IM and IPM are quantitatively compared and discussed.

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Yahagi, Yuna, Tomohiro Koyano, Masanori Kunieda, and Xiao Dong Yang. "High Spindle Speed Wire Electrical Discharge Grinding Using Electrostatic Induction Feeding Method." Key Engineering Materials 447-448 (September 2010): 268–71. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.268.

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This paper describes machining characteristics of high spindle speed WEDG using the electrostatic induction feeding method. In this method, non-contact electric feeding allows the workpiece rod to be rotated at a high speed of up to 50000rpm. Since the temperature rise on the workpiece surface is low, the material removal rate was two times higher and the surface roughness was also improved compared to the normal RC discharge circuit where the rotational speed was 1000rpm at the highest due to contact electric feeding using a brush. Furthermore, micro rods thus prepared were used as tool electrodes to machine micro-holes with the same rotation speed of 50000rpm. It was found that smaller gaps and better straightness can be obtained due to the high flushing efficiency at the high spindle speed.

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Wu, Haihui, Tong Wang, and Junqi Wang. "Research on discharge state detection of finishing in high-speed wire electrical discharge machine." International Journal of Advanced Manufacturing Technology 103, no. 5-8 (April 18, 2019): 2301–17. http://dx.doi.org/10.1007/s00170-019-03708-z.

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Wang, Qingsong, Xing Zhao, and Shuangxia Niu. "Flux-Modulated Permanent Magnet Machines: Challenges and Opportunities." World Electric Vehicle Journal 12, no. 1 (January 12, 2021): 13. http://dx.doi.org/10.3390/wevj12010013.

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High torque density is a desirable feature of electrical machines used in traction applications, such as electric vehicle (EV)/hybrid electric vehicle (HEV) propulsion, wind turbines, more electric aircrafts, etc. The flux-modulated permanent magnet (FMPM) machine is considered as one of the most promising candidates to achieve high torque density. The incorporated gearing effect is ideal in reducing the rotating speed and amplifying the output torque of the FMPM machines. This paper aims at a comprehensive review of the topology evolution of the FMPM machines. Based on different structures, the FMPM machines are grouped into four categories: surface-type FMPM machines, spoke-type FMPM machines, partitioned stator FMPM machines, and bidirectional FMPM machines. The operating principles, advantages, drawbacks, and major applications of the FMPM machines are discussed in detail. In the end, the current state of the art, opportunities, challenges, and future trends of the FMPM machines are discussed. Therefore, this paper offers a systematic guidance on the selection and design of the FMPM machines.

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Zimmermann, W. "High-dynamic AC machine control without speed or position sensor." European Transactions on Electrical Power 6, no. 1 (September 7, 2007): 47–51. http://dx.doi.org/10.1002/etep.4450060107.

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Ngu, S. S., L. C. Kho, T. P. Tan, and M. Anyi. "A Novel Design of Tube Printing Machine." Applied Mechanics and Materials 315 (April 2013): 35–39. http://dx.doi.org/10.4028/www.scientific.net/amm.315.35.

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This paper reports on the design process necessary for an automatic tube printing machine and the issues concerned with high speed and high productivity tube printing. In the paper a detailed description is put forward for the mechanical system design of the machine. The processes necessary to make the design successful are outlined and the 3D model is carried out using CAD software. The electrical design of the tube printing machine is put forward to illustrate the wiring and electronic/electrical components of the machine.

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Cao, Wenping, Abid Ali Shah Bukhari, and Lassi Aarniovuori. "Review of Electrical Motor Drives for Electric Vehicle Applications." July 2019 38, no. 3 (July 1, 2019): 525–40. http://dx.doi.org/10.22581/muet1982.1903.01.

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EVs (Electric Vehicles) have been rejuvenated over the last decades while the motor drive technologies are still evolving. This paper provides a review of electrical motor drive technologies used in EV applications, with a performance comparison of candidate machines and their drive topologies. EV applications demand high efficiency, high torque density, high reliability, and wide speed range while reducing weight, complexity, total costs and environmental impact. In the literature, DC (Direct Current) motors, IMs (Induction Motors) and PM (Permanent Magnet) motors can be generally found in marketplace whilst RMs (Reluctance Motors) have been researched for some time and are nearing commercial availability. This paper evaluates the performance of these four main types of electrical motor drives for EV propulsion applications using analytical methods. PM motors may offer the best performance in terms of torque density and compactness but the cost is the highest (primarily dominated by rare-earth permanent magnets), limiting their widespread application in mass production EVs. DC motors have their own merits but suffer from limited power density and necessity for maintenance. Induction motor drives are a mature and proven technology. In particular, squirrel-cage IMs are robust, reliable and inexpensive, striking a balance between system cost and complexity, power density and extended speed range. Reluctance motors can provide a good torque density and cost effective EV drive solutions. Their drawbacks can also be overcome by the use of power electronic converters and advanced control strategies. Induction and reluctance motor drives are well suited for cost sensitive mass production EV applications. Looking to the future, increased hybridization may be a way forward in industry which combines attractive features of different electrical machines and control algorithms and still offer much promise in performance and total cost. At last, reliability study on EVs requires historical information and driving patterns, demanding research expertise in eco-sociology, human behaviors as well as human-machine interface.

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Dlala, E., and A. Arkkio. "Measurement and analysis of hysteresis torque in a high-speed induction machine." IET Electric Power Applications 1, no. 5 (2007): 737. http://dx.doi.org/10.1049/iet-epa:20060472.

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Bateman, Christopher J., Barrie C. Mecrow, Andrew C. Clothier, Paul P. Acarnley, and Nicholas D. Tuftnell. "Sensorless Operation of an Ultra-High-Speed Switched Reluctance Machine." IEEE Transactions on Industry Applications 46, no. 6 (November 2010): 2329–37. http://dx.doi.org/10.1109/tia.2010.2070471.

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Tsai, Ching-Chih, Shih-Min Hsieh, and Huai-En Kao. "Mechatronic design and injection speed control of an ultra high-speed plastic injection molding machine." Mechatronics 19, no. 2 (March 2009): 147–55. http://dx.doi.org/10.1016/j.mechatronics.2008.09.003.

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Trinchero, Riccardo, Paolo Manfredi, Igor S. Stievano, and Flavio G. Canavero. "Machine Learning for the Performance Assessment of High-Speed Links." IEEE Transactions on Electromagnetic Compatibility 60, no. 6 (December 2018): 1627–34. http://dx.doi.org/10.1109/temc.2018.2797481.

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Andresen, E., B. Racinowski, and G. Szymański. "NUMERICAL SIMULATION OF HIGH SPEED INDUCTION MACHINE WITH SOLID ROTOR." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 14, no. 4 (April 1995): 97–100. http://dx.doi.org/10.1108/eb051922.

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Zhang, Shi Jin, Yu Qiang Wu, and Yan Li Wang. "Wire Electrical Discharge Machining – High Speed VS Abrasive Waterjet - A Case Study." Advanced Materials Research 189-193 (February 2011): 4245–55. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.4245.

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Technological advancement, on the one hand, made Electrical Discharge Machining (EDM) much faster. One example of that is the presence of Wire Electrical Discharge Machining – High Speed (WEDM-HS) machine, which makes the material removal rate as high as 80 . On the other hand, it also made Abrasive Waterjet (AWJ) achieve much better quality surface and tighter tolerance. As a result, these two types of machining process have converged to the point where they can complement one another quite nicely in selected applications. However, it does not mean user may pick any one for their applications. The proper selection not only decreases the manufacturing costs but also achieves better quality. This paper focuses on comparing WEDM-HS with AWJ by actually cutting a special designed sample. Through comparison from several aspects which include dimension precision, surface roughness, cost, cutting time and surface damage, a proper selection guidance for regular user has been provided.

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Xiao, Lin Jing, and Hong Chang Ding. "Study on Stiffness and Damping Characteristic of Hybrid Magnetic Bearing for High-Speed Electrical Machine." Advanced Materials Research 338 (September 2011): 534–38. http://dx.doi.org/10.4028/www.scientific.net/amr.338.534.

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This paper focuses on the stiffness and damping characteristic of hybrid magnetic bearing for high-speed electrical machine. Firstly, it analyzes the structure and working principle of hybrid magnetic bearing, according to the bearing’s magnetic circuit properties, it deduces the equation of the bearing’s magnetic force with displacement and current. Then, combining with the controller parameters it deduces the stiffness and damping equation of magnetic bearing. At last it simulates the stiffness and damping characteristic curve, and the obtained simulation results can give theoretical support for rotor dynamic analysis and modal analysis.

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Barta, Jan, Nikita Uzhegov, Cestmir Ondrusek, and Juha Pyrhönen. "High-Speed Electrical Machine Topology Selection for the 6kW, 120 000 rpm Helium Turbo-Circulator." International Review of Electrical Engineering (IREE) 11, no. 1 (February 29, 2016): 36. http://dx.doi.org/10.15866/iree.v11i1.7687.

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Kolondzovski, Z., A. Belahcen, and A. Arkkio. "Comparative thermal analysis of different rotor types for a high-speed permanent-magnet electrical machine." IET Electric Power Applications 3, no. 4 (2009): 279. http://dx.doi.org/10.1049/iet-epa.2008.0208.

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Zhang, Li Xiu, and Yu Hou Wu. "Vibration and Noise Monitoring of Ceramic Motorized Spindles." Advanced Materials Research 291-294 (July 2011): 2076–80. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.2076.

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High speed machining (HSM) technology is used in a broad range of applications to machine ferrous metals and nonmetallic material. The motorized spindle is one of the major elements to keep the machine running at high productivity. In recently years, the requirement of rotational speed and rigidity of motorized spindle is getting higher and higher in order to satisfy the high speed processing. Engineering ceramic is the ideal material for high-speed and high precision electrical spindle due to perfect characteristics of light weight, wear resistance, high temperature, high strength, and so on. So a ceramic motorized spindle is designed for higher speed and rigidity. The shaft and bearing of the motorized spindle are made from ceramic material and other parts are made from metal. Rated power of this electrical spindle is 15Kw; its torque is 14Nm and revolving speed is up to 30,000 rpm as maximum. Motorized spindle is a typical mechatronics product and its dynamic property is very important. The signal of vibration and noise of motorized spindle may display its running status, so the vibration and noise of motorized spindle is an important index in the dynamic performance. This paper monitors the vibration and noise of ceramic motorized spindles using spectral analysis techniques. The effects of rotating speed and lubrication condition on vibration and noise of the ceramic electrical spindle are analyzed. These results are very helpful to the structure optimization and application of the ceramic motorized spindle.

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Mouralova, Katerina, Libor Benes, Radim Zahradnicek, Josef Bednar, Antonin Zadera, Jiří Fries, and Vaclav Kana. "WEDM Used for Machining High Entropy Alloys." Materials 13, no. 21 (October 28, 2020): 4823. http://dx.doi.org/10.3390/ma13214823.

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Unconventional wire electrical discharge machining technology (WEDM) is a key machining process, especially for machining newly emerging materials, as there are almost no restrictions (only at least minimal electrical conductivity) in terms of demands on the mechanical properties of the workpiece or the need to develop new tool geometry. This study is the first to present an analysis of the machinability of newly developed high entropy alloys (HEAs), namely FeCoCrMnNi and FeCoCrMnNiC0.2, using WEDM. The aim of this study was to find the optimal setting of machine parameters for the efficient production of parts with the required surface quality without defects. For this reason, an extensive design of experiments consisting of 66 rounds was performed, which took into account the influence of five input factors in the form of pulse off time, gap voltage, discharge current, pulse on time, and wire speed on cutting speed and the quality of the machined surface and its subsurface layer. The analysis of topography, morphology, subsurface layers, chemical composition analysis (EDX), and lamella analysis using a transmission electron microscope (TEM) were performed. An optimal setting of the machine parameters was found, which enables machining of FeCoCrMnNi and FeCoCrMnNiC0.2 with the required surface quality without defects.

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Bidouche, Badr-El-Boudour, Thierry Lubin, and Smaïl Mezani. "Transient performance of a magnetically geared induction machine." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 39, no. 5 (July 16, 2020): 1113–30. http://dx.doi.org/10.1108/compel-12-2019-0485.

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Purpose The purpose of this paper is to investigate the transient performance of an induction machine coupled with a magnetic gear for industrial applications with low speed and high torque requirements. This new solution increases mechanical reliability and does not require maintenance and lubrication. The main objective is to study the direct-on-line starting ability of the electrical machine and its stability regarding a sudden change for the load torque. Design/methodology/approach A nonlinear analytical model for the induction machine and the magnetic gear is first developed. The model is then linearized around an operating point to obtain the transfer function between the load angle and the electromagnetic torque from which an analytical expression for the mechanical resonant frequency is obtained. Findings It is shown that the direct on-line starting is possible, if the moment of inertia of the load is not greater than a maximum value. Moreover, it is demonstrated that this new system present inherent overload protection. Originality/value A new high-performance direct-on-line starting electrical machine is proposed to achieve high torque at low speed without mechanical gear to improve reliability and reduce maintenance.

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Chen, Dan Ya, Jian Qiang Zhang, He Huang, and Yun Lu. "Control Method Research of Electrical Vehicle Used IPM Synchronous Motor." Applied Mechanics and Materials 236-237 (November 2012): 1344–48. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.1344.

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The salient effect of the rotor structure of the interior permanent magnet synchronous machine (IPMSM) makes it more suitable for running in the zone that exceeds the rated revolution by flux-weakening control. Therefore, the closed-loop speed regulation system composed by IPMSM can achieve excellent dynamic performance, high precision and wide speed performance. On the basis of the mathematical model of d / q coordinates of IPMSM, this paper discusses the control proposal of IPMSM: to control the current of d / q axis to maximize the speed range.

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