Academic literature on the topic 'Machine rotor'

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Journal articles on the topic "Machine rotor"

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Shostak, Yaroslav, Oleh Holovashchenko, Yuriy Reshetnikov, and Viktor Tkachenko. "Improving the technological process of balancing electric machine rotors on a balancing machine." Eastern-European Journal of Enterprise Technologies 4, no. 7 (130) (2024): 60–69. http://dx.doi.org/10.15587/1729-4061.2024.309867.

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The object of research is the process of dynamic balancing of rotors on a balancing machine in the process of restoring electric machines. The work is aimed at improving the quality of balancing rotors in the process of major repairs of traction electric motors for electric trains. The problem addressed was the quality of balancing the rotors of electric machines on stationary balancing machines. According to the conventional balancing technology, the rotor to be balanced is mounted on the supports of the balancing machine with support surfaces that usually have mechanical defects. These defec
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KOSIYUK, M., and А. KOSIYUK. "ROTOR-BLADE MACHINE." Herald of Khmelnytskyi National University. Technical sciences 285, no. 3 (2020): 114–17. https://doi.org/10.31891/2307-5732-2020-285-3-19.

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The world’s leading engine companies carry out research and development work aimed at improving the efficiency of heat engines, their reliability and durability, reducing weight and size, improving environmental performance, reducing fuel consumption and more. In the research of many companies, attempts are being made to fundamentally change the process of converting thermal energy into mechanical work. The use of rotor-blade engine design is one of the important areas of the process of improving heat engines. This gives a significant advantage over reciprocating engines in terms of specific d
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Shen, ZhiHuang, Bin Yao, BinQiang Chen, Wei Feng, and XiangLei Zhang. "A Novel Rotor Profile Error Tracing and Compensation Strategy for High Precision Machining of Screw Rotor Based on Trial Cutting of Limited Samples." Shock and Vibration 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/978325.

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The machining precision plays an important role in the operation reliability and service life of screw rotors. However, the actual machined rotor profile of screw rotors is different from its theoretical profile due to the errors of the machine tool. This paper proposes a novel method of error tracing and compensation to reduce the machined errors of rotor profile on the basis of the limited sample trials, and the method is based on a matrix of error compensation. The errors of rotor profile are obtained based on limited sample trials machining of screw rotors,and fitted into piecewise smooth
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Lacevic, H., A. Kovacevic, N. Stosic, and M. Read. "On Rotor Profling of Internally Geared Screw Machines." IOP Conference Series: Materials Science and Engineering 1322, no. 1 (2024): 012006. https://doi.org/10.1088/1757-899x/1322/1/012006.

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Abstract The internally geared screw machine represents a novel type of positive displacement compressor which consists of an inner and outer rotor. Both rotors rotate in the same direction but are each centered on offset parallel axes. The rotor profiles are designed to create multiple continuous contact points between the rotors, forming several separate working chambers whose volumes vary from minimum to maximum and back to minimum during a single rotation of the outer rotor. For a gas or two-phase working fluid, adjusting the discharge port geometry allows internal compression to occur bef
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Lebedev, Valeriy A., Georgy V. Serga, Irina V. Davydova, Tatiana V. Atoyan, Irina G. Koshlyakova, and Alexander V. Gordienko. "Main trends in intensification of rotor-screw processing of parts." MATEC Web of Conferences 226 (2018): 01008. http://dx.doi.org/10.1051/matecconf/201822601008.

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The ways of productivity increase in details finishing-strengthening processing executed in rotor-screw technological systems are presented. It is shown that the use of rotor-screw machines makes it possible to combine the parts machining using a vibrating field with a large amplitude of oscillations and their transportation in a streamlined form of production organization. Two main directions of rotor-helical processing stimulation are identified: on the basis of structural changes in the screw rotor, as the main working element of the rotor-screw machine and by equipping the screw rotor with
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Manich, A. M., M. D. De Castellar, A. Barella, and L. Castro. "Strength at “Theoretically Null Twist” of Acrylic and Polyester/Cotton Rotor Spun Yarns: Application to Prediction of “Machine Twist”." Textile Research Journal 58, no. 4 (1988): 238–45. http://dx.doi.org/10.1177/004051758805800409.

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Acrylic staple rotor spun yarns (172) obtained from a BD 200 rotor machine fitted with twelve different spinning heads that combined four different rotors and three different yarn extraction nozzles were tested for strength at a theoretically null twist. A high correlation existed between the theoretically null twist strength and the apparent loss of twist or residual twist. We propose a method for assessing the total twist or machine twist of the yarn from the apparent yarn twist measured in a twist tester and from the yarn strength at a theoretically null twist. Tests on fourteen polyester/c
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Hou, Xukui, Ende Wang, Hui Cao, Yalong Zhu, and Kai Qi. "Research on Dynamic Balance Adjustment Method of Single Braced Frame Gyroscope Rotor." MATEC Web of Conferences 256 (2019): 02005. http://dx.doi.org/10.1051/matecconf/201925602005.

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The uneven mass distribution of gyro rotors results in vibration, rotation and drift of gyro rotors, which seriously affect the performance index and life of gyro rotors. However, because there is no rigid connection between the rotary shaft and the shell of the gyro rotor, the dynamic balancing machine can only balance the vibration component of the single braced frame gyroscope rotor, and can’t measure the gyro rotor’s rotation component. By analyzing the influence of uneven rotor mass distribution on the gyro rotor performance, a method of eliminating two rotational degrees of freedom of th
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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 (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 c
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Mustafayev, Rauf, Nurali Yusifbayli, and Laman Hasanova. "Matrix structure of unified mathematical model of electric AC machines at control." E3S Web of Conferences 209 (2020): 02023. http://dx.doi.org/10.1051/e3sconf/202020902023.

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The matrix structure of the equations of a generalized electric alternating current machine is proposed, which, based on the Parke equations, is written in the coordinate axes of the machines rotating with the rotor speed. In the matrix structure, the column matrices of the derivatives of the stator, excitation and rotor windings are equal to the product of diagonal matrices consisting of the machine parameters and the column matrices of the flux links themselves and the sum of the matrix columns of the control parameters which are the matrix columns of the stator voltage, excitation voltage,
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Brandl, Lukas, Hans-Christian Reuss, and Daniel Heidle. "Approach to Design of Piezoelectric Energy Harvester for Sensors on Electric Machine Rotors." Energies 17, no. 8 (2024): 1884. http://dx.doi.org/10.3390/en17081884.

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The reliability and efficiency of components are key aspects in the automotive industry. Electric machines become the focus of development. Thus, improvements in efficiency and reliability have gained significance. While it is established to attach sensors to the fixed parts of machines, such as stators, moving parts like rotors pose a major challenge due to the power supply. Piezoelectric generators can operate as energy harvesters on rotors and thus enable the rotor-based integration of sensors. The research in this article proposes the first approach to the design of a piezoelectric energy
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Dissertations / Theses on the topic "Machine rotor"

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Xie, Lihan. "Suivi numérique des bifurcations pour l'analyse paramétrique de la dynamique non-linéaire des rotors." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI018/document.

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Au cœur des moyens de transport, de transformation d'énergie, et de biens d'équipements, les machines tournantes peuvent avoir des comportements dynamiques complexes dus à de multiples sources de non linéarités liées aux paliers hydrodynamiques, à la présence de fissures, aux touches rotor-stator, ... Des phénomènes comme les décalages fréquentiels et donc de vitesses critiques, les cycles d'hystérésis avec sauts d'amplitudes, le changement brutal du contenu fréquentiel des réponses, sont des expressions de ces comportements. Résoudre les équations du mouvement induites par des modélisations a
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SEGAYER, AHMED MOHAMMED. "ROTOR STATOR CONTACT IN A ROTATING MACHINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2000. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34202@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O crescente avanço da tecnologia de equipamentos rotativos tem exigido dos projetistas de máquinas adapta-los às condições de operação mais rigorosas e, consequentemente, projetos mais sofisticados. O aumento da eficiência é frequentemente realizado por operações de minimização de folga entre os elementos rotativos e estacionários e/ou aumento da velocidade de rotação do rotor. A natureza das funções e o custo elevado dos equipamentos rotativos de alta velocidade exigem precisão e segurança no projeto para evitar riscos de operaçã
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Sparv, Lisa. "Cooling simulation of a BEV electrical machine rotor." Thesis, KTH, Fordonsdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302143.

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The thesis work described in this report is about simulation of the cooling of an electrical machine rotor. Limitations and simplifications were made on the CAD model of the rotor with the purpose of reducing the simulation time, for it to then be used for CFD-simulations using STAR-CCM+. This was done to see the temperature, as well as its distribution, in the model. By changing various parameters, one at the time whilst the rest were kept at their assigned standard values, the changes could be analysed and thereafter compared. The tests include smaller geometry changes, parameters of the coo
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Masoud, Mahmoud Ibrahim. "Decoupled control of rotor torque and rotor electric power in a salient pole, synchronous machine." Thesis, Heriot-Watt University, 2003. http://hdl.handle.net/10399/389.

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Wills, Dominic. "Methods to quantify and reduce rotor losses in a solid rotor yoke permanent magnet machine." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4014.

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Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Certain types of electric machines are particularly susceptible to the proliferation of eddy currents flowing within the solid conducting regions in the rotor. Single-layer, non-overlapping windings within uneven open slots are some stator properties that can produce damaging, asynchronous magnetic field harmonics which manifest in the rotor as eddy currents. The ohmic losses caused by these eddy currents are a source of inefficiency and can cause a marked increase in the temperatu
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Al-Amer, Itihad Abd Al-Hameed Abd. "A stable doubly-fed machine with novel rotor design." Thesis, Queen's University Belfast, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335349.

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Drennan, Duncan Scott. "Design of a passive rotor transverse flux rotating machine." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50313.

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Pages 6-12 missing.<br>Thesis (MScEng)--University of Stellenbosch, 2005.<br>ENGLISH ABSTRACT: The transverse flux machine (TFM) offers the opportunity of high torque to volume ratios which makes it an excellent candidate for direct wheel drives and low speed generator applications. TFMs have a three dimensional flux path which eliminates iron laminates as a viable core material. Soft magnetic composites have been adopted in these machines due to their isotropic nature. There are three main variants of TFMs, namely, active rotor (with magnets on the rotor), passive rotor (with magnets on
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Papini, Luca. "Performance calculation of high speed solid rotor induction machine." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/52180/.

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Solid rotor induction machines are suitable for applications which require robustness, reliability and high rotational speed. A literature review of high speed technologies is initially presented. The current limitation and challenges are detailed based on a wide collection of data. The multi-physics aspect related with electrical machines for high speed applications are discussed providing a summary of the current state of the art. The main aim of the research was to develop a multi-physic computational environment for the design and analysis of solid rotor induction machines. The electromagn
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Delport, Jacques. "Synchronized Measurement of Machine Rotor Angle and Its Application." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51242.

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The internal voltage angle of a generator is an important parameter that indicates the stability, both transient and steady-state, of the generator. This paper proposes a method of measuring and synchronizing the internal angle using a microprocessor and an optical encoder installed on the shaft of a generator. With a synchronized angle measurement, accurate stability studies and wide-area controls can be implemented. The experimental setup for measuring the rotor angle of a generator is explained in this work. A wide-area power system stabilizer implementing the synchronized angle measurement
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Wang, Hong. "MACHINE HEALTH MONITORING OF ROTOR-BEARING-GEAR TRANSMISSION SYSTEM." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1133281063.

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Books on the topic "Machine rotor"

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Center, Ames Research, ed. Dynamic analysis of rotor blade undergoing rotor power shutdown. National Aeronautics and Space Administration, Ames Research Center, 1990.

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Center, Ames Research, ed. Dynamic analysis of rotor blade undergoing rotor power shutdown. National Aeronautics and Space Administration, Ames Research Center, 1990.

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United States. National Aeronautics and Space Administration., ed. Wave rotor demonstrator engine assessment. National Aeronautics and Space Administration, 1996.

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United States. National Aeronautics and Space Administration., ed. Wave rotor demonstrator engine assessment. National Aeronautics and Space Administration, 1996.

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Dimarogonas, Andrew D. Analytical Methods in Rotor Dynamics: Second Edition. Springer Netherlands, 2013.

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Huppunen, Jussi. High-speed solid-rotor induction machine: Electromagnetic calculation and design. Lappeenranta University of Technology, 2004.

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Khanh, Nguyen, and Ames Research Center, eds. Aeroelastic stability of a full-scale hingeless rotor. National Aeronautics and Space Administration, Ames Research Center, 1996.

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Khánh, Nguyẽ̂n, and Ames Research Center, eds. Aeroelastic stability of a full-scale hingeless rotor. National Aeronautics and Space Administration, Ames Research Center, 1996.

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United States. National Aeronautics and Space Administration., ed. Machine dynamics branch research and accomplishments for FY 1996. National Aeronautics and Space Administration, 1997.

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Nguyen-Schäfer, Hung. Rotordynamics of Automotive Turbochargers: Linear and Nonlinear Rotordynamics – Bearing Design – Rotor Balancing. Springer Berlin Heidelberg, 2012.

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Book chapters on the topic "Machine rotor"

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Anderson, Ross. "A modern rotor machine." In Fast Software Encryption. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-58108-1_6.

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Rao, J. S. "Rotor Dynamics Methods." In History of Mechanism and Machine Science. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1165-5_14.

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Mokhtar, Md Asjad, Ashish K. Darpe, and K. Gupta. "Experimental Investigations on Torsional Vibrations of a Rotor During a Rotor-Stator Rub." In Mechanisms and Machine Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99270-9_39.

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Georghiou, Luke, J. Stanley Metcalfe, Michael Gibbons, Tim Ray, and Janet Evans. "Renold Power Transmission (Holroyd Machine Tools & Rotors): Rotor Milling Machines." In Post-Innovation Performance. Palgrave Macmillan UK, 1986. http://dx.doi.org/10.1007/978-1-349-07455-6_32.

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Gupta, K. "Composite Shaft Rotor Dynamics: An Overview." In Mechanisms and Machine Science. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09918-7_6.

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Chouksey, Manoj, Jayanta K. Dutt, and Subodh V. Modak. "Multi Speed Model Updating of Rotor Systems." In Mechanisms and Machine Science. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09918-7_63.

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Rao, J. S. "Finite Element Methods for Rotor Dynamics." In History of Mechanism and Machine Science. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1165-5_16.

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Varanis, Marcus, Arthur Mereles, Anderson Silva, José Manoel Balthazar, and Ângelo Marcelo Tusset. "Rubbing Effect Analysis in a Continuous Rotor Model." In Mechanisms and Machine Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99270-9_28.

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Okpo, E., P. F. Le Roux, and O. I. Okoro. "Effects of Inductive Load on Photovoltaic Systems." In Lecture Notes in Networks and Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4581-4_18.

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AbstractThe increasing demand for electrical energy, driven by technological advancements in underdeveloped and developing nations, has led to a growing reliance on renewable energy sources. Inductive loads requiring high starting currents can significantly affect power sources. Therefore, it is imperative to investigate the impacts of inductive loads on photovoltaic (PV) systems. This study aims to investigate the major parameters of the asynchronous machine, a typical representation of inductive load rated at 15 kW and 7.5 kW, respectively. With the analysis performed in MATLAB/Simulink, the
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Balaji, Nidish Narayanaa, and I. R. Praveen Krishna. "Coupled Simulation of Rotor Systems Supported by Journal Bearings." In Mechanisms and Machine Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99262-4_30.

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Conference papers on the topic "Machine rotor"

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Parviainen, Miika, Charles Nutakor, Arash Allahyari, et al. "Bridgeless rotor synchronous reluctance machine design evaluation." In 2025 IEEE International Electric Machines & Drives Conference (IEMDC). IEEE, 2025. https://doi.org/10.1109/iemdc60492.2025.11061005.

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Zürrlein, Tobias, Xinjun Liu, Marcel Baader, and Florian Risch. "The Yokeless Dual Rotor Electrically Excited Synchronous Machine." In 2025 IEEE International Electric Machines & Drives Conference (IEMDC). IEEE, 2025. https://doi.org/10.1109/iemdc60492.2025.11061137.

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Das, Nirangkush, Muhammad Numan, Firdausa Ahmed, et al. "Lateral Rotor Vibrations in Six-Phase Induction Machine Drives." In 2025 IEEE International Electric Machines & Drives Conference (IEMDC). IEEE, 2025. https://doi.org/10.1109/iemdc60492.2025.11061083.

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Lawson, Victoria, Meagan Phister, and Clara Rogers. "Automated Rotor Assembly CNC Machine." In 2020 Systems and Information Engineering Design Symposium (SIEDS). IEEE, 2020. http://dx.doi.org/10.1109/sieds49339.2020.9106641.

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Papini, Luca, and Chris Gerada. "Sensitivity analysis of rotor parameters in solid rotor induction machine." In 2017 IEEE International Electric Machines and Drives Conference (IEMDC). IEEE, 2017. http://dx.doi.org/10.1109/iemdc.2017.8002345.

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Gladyshev, Sergey P., Pavel S. Gladyshev, and Irina S. Okrainskaya. "Simulating Synchronous Machine with Wireless Rotor." In 2021 International Conference on Electrical, Computer and Energy Technologies (ICECET). IEEE, 2021. http://dx.doi.org/10.1109/icecet52533.2021.9698480.

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Vilchis-Rodriguez, Damian S., Sinisa Djurović, and Alexander C. Smith. "Sensitivity Assessment of Wound Rotor Induction Generator Bearing Fault Detection Using Machine Electrical Quantities." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94586.

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This paper investigates the sensitivity of machine electrical quantities when employed as a means of bearing fault detection in wound rotor induction generators. Bearing failure is the most common failure mode in rotating AC machinery. With the widespread use of wound rotor induction machines in modern wind power generation, achieving effective detection of bearing faults in these machines is becoming increasingly important in order to minimize wind turbine maintenance related downtime. Current signature analysis has been demonstrated to be an effective technique for achieving detection of dif
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Gritli, Y., A. Tani, C. Rossi, D. Casadei, and F. Filippetti. "Accurate rotor fault detection in doubly-fed Wound-Rotor Induction Machine." In 2017 6th International Conference on Clean Electrical Power (ICCEP). IEEE, 2017. http://dx.doi.org/10.1109/iccep.2017.8004776.

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McElhinney, S. A., T. M. Jahns, and T. A. Shedd. "Centrifugally Pumped Thermosiphons for Motor Rotor Cooling." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48516.

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This paper presents a detailed approach to provide improved cooling and heat spreading in electric machine rotors using centrifugally-pumped revolving thermosiphons. Design concepts are discussed that offer the following advantages: (1) high thermal performance across a wide range of operating points; (2) low-impedance heat paths; (3) excellent opportunities for integration with electric machine design for improved electromagnetic performance and structural design, as well as practical, cost-effective manufacturing. It takes advantage of centrifugal force to provide effective inertial pumping
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Li Guangzhong, Ding Xiaoping, Xiao Qianghui, and Zhou Feng. "Study on rotor magnetomotive force comparison of doubly-fed brushless machine with cage rotor or wound rotor." In Proceedings of the Eighth International Conference on Electrical Machines and Systems. IEEE, 2005. http://dx.doi.org/10.1109/icems.2005.202925.

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Reports on the topic "Machine rotor"

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Rivera-Casillas, Peter, and Ian Dettwiller. Neural Ordinary Differential Equations for rotorcraft aerodynamics. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48420.

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High-fidelity computational simulations of aerodynamics and structural dynamics on rotorcraft are essential for helicopter design, testing, and evaluation. These simulations usually entail a high computational cost even with modern high-performance computing resources. Reduced order models can significantly reduce the computational cost of simulating rotor revolutions. However, reduced order models are less accurate than traditional numerical modeling approaches, making them unsuitable for research and design purposes. This study explores the use of a new modified Neural Ordinary Differential
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Brown, Ian, and Daniel Ludois. Wound Field and Hybrid Synchronous Machines for EV Traction with Brushless Capacitive Rotor Field Excitation (Final Report). Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1837809.

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McKeever, John W. Enclosure Requirements to Protect Personnel from Spinning Rotor Frailures at the Power Electronics and Electric Machinery Research Center. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/932617.

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