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Статті в журналах з теми "Machines à mémoire de flux variable":
Owen, R. L., Z. Q. Zhu, J. B. Wang, D. A. Stone, and I. Urquhart. "Review of Variable-flux Permanent Magnet Machines." Journal of international Conference on Electrical Machines and Systems 1, no. 1 (March 1, 2012): 23–31. http://dx.doi.org/10.11142/jicems.2012.1.1.023.
Huang, L. R., J. H. Feng, S. Y. Guo, J. X. Shi, W. Q. Chu, and Z. Q. Zhu. "Fast design method of variable flux reluctance machines." CES Transactions on Electrical Machines and Systems 2, no. 1 (March 2018): 152–59. http://dx.doi.org/10.23919/tems.2018.8326462.
Vansompel, Hendrik, Peter Sergeant, Luc Dupre, and Alex Van den Bossche. "Axial-Flux PM Machines With Variable Air Gap." IEEE Transactions on Industrial Electronics 61, no. 2 (February 2014): 730–37. http://dx.doi.org/10.1109/tie.2013.2253068.
Basnet, Bigyan, and Pragasen Pillay. "Torque Pulsation Reduction During Magnetization in Variable Flux Machines." IEEE Journal of Emerging and Selected Topics in Power Electronics 10, no. 2 (April 2022): 1703–11. http://dx.doi.org/10.1109/jestpe.2021.3135363.
Huang, L. R., J. H. Feng, S. Y. Guo, J. X. Shi, W. Q. Chu, and Z. Q. Zhu. "Analysis of Torque Production in Variable Flux Reluctance Machines." IEEE Transactions on Energy Conversion 32, no. 4 (December 2017): 1297–308. http://dx.doi.org/10.1109/tec.2017.2698836.
Zhou, Zicheng, Hao Hua, and Ziqiang Zhu. "Flux-Adjustable Permanent Magnet Machines in Traction Applications." World Electric Vehicle Journal 13, no. 4 (March 29, 2022): 60. http://dx.doi.org/10.3390/wevj13040060.
Liu, X., and Z. Q. Zhu. "Comparative Study of Novel Variable Flux Reluctance Machines With Doubly Fed Doubly Salient Machines." IEEE Transactions on Magnetics 49, no. 7 (July 2013): 3838–41. http://dx.doi.org/10.1109/tmag.2013.2242047.
Ibrahim, Maged, Lesedi Masisi, and Pragasen Pillay. "Design of Variable-Flux Permanent-Magnet Machines Using Alnico Magnets." IEEE Transactions on Industry Applications 51, no. 6 (November 2015): 4482–91. http://dx.doi.org/10.1109/tia.2015.2461621.
Fernandez, Daniel, Maria Martinez, David Reigosa, Juan M. Guerrero, Carlos Manuel Suarez Alvarez, and Fernando Briz. "Permanent Magnets Aging in Variable Flux Permanent Magnet Synchronous Machines." IEEE Transactions on Industry Applications 56, no. 3 (May 2020): 2462–71. http://dx.doi.org/10.1109/tia.2020.2968872.
Shen, Yiming, and Qinfen Lu. "Investigation of Novel Multi-Tooth Linear Variable Flux Reluctance Machines." IEEE Transactions on Magnetics 54, no. 11 (November 2018): 1–5. http://dx.doi.org/10.1109/tmag.2018.2839662.
Дисертації з теми "Machines à mémoire de flux variable":
Domingues, de Sousa Flávia. "Study and modeling of a Fe-Cr-Co magnet based Variable Flux Memory Machine for its supply and mechanical sensorless control at high speed." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0105.
Permanent Magnet Synchronous Machines (PMSMs) have been widely used for electrification transportation applications. Producing their magnet flux from rare-earth magnets (e.g. Nd-Fe-B magnets), these machines have had their long-term use increasingly questioned due to the risks of supply, price variability and the environmental challenges related to the extraction and recycling of these mentioned materials. To this scenario, can be also added the limitations of PMSMs for being used in large torque-speed ranges, requiring usually the implementation of flux-weakening strategies, based on supplying the machine with an increasingly negative direct stator current component as the rotor speed also increases. In case of non-salient pole machines the Joule losses can be enhanced and the efficiency consequently reduced. Capable of operating in a wide torque-speed range, the Variable Flux Memory Machines (VFMMs) have emerged as an option characterized by controllable magnetic flux density from short-time currents pulses supplying the armature windings. All this thanks to the highly non-linear hysteresis loop characterizing the low coercive force magnets used as source of flux. Al-Ni-Co alloys has been the choice of many researches for these applications. However, similar magnetic materials as Fe-Cr-Co are still little explored, besides advantageous characteristics as their lower content of Cobalt and mechanical proprieties. Within this framework, this thesis proposes the study of single-type AC-magnetized single pole pair VFMM, composed of a Fe-Cr-Co-based rotor. The machine geometry is designed from a PMSM, in which the rotor pf Nd-Fe-B is directly replaced by a solid cylinder of FeCrCo36/5. First, a focus on the study of the magnetic behavior of the magnet when inserted in the machine environment. Because of the anisotropy differentiating the hysteresis loop of the FeCrCo36/5 in the a easy or hard magnetization directions, two different methodologies are proposed for describing the partial magnetization profile via experimental tests at standstill and Finite Element Analysis simulations. The achieved results are compared with the reference obtained from an ideal measuring equipment (HysteresisGraph). The effects of a stator saturation and geometry as also the anisotropy shape are explored for justifying the differences observed. A following study focused on the magnetization under operation and the torque control is developed considering the an adapted sensorless algorithm. In this context, the present research proposes the use of a Proportional Integral Phase Locked-Loop for estimating the rotor position and speed. An attention is given to the offset angle compensation required for adjusting the mentioned position according to the acquisition system (active filters) and the characteristics of the estimation method used. A parametric sensitivity study allows the identification of the dq-axis inductances as the most critical parameters to an accurate correction angle estimation. For this reason, this research thesis is also interested in proposing a methodology to describe the d- and q-axis inductances from FEA simulations performed by considering the anisotropy effects of the magnet and also the saturation of the stator material. A variable reluctance is identified in the machine and its effect on the correction angle is studied
Huang, Liren. "Investigation of novel variable flux reluctance machines for traction application." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/20521/.
Lee, Beomseok. "Investigation of torque production and control strategy for variable flux reluctance machines." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/16050/.
Poulot, Patrick. "Contribution à l'étude des machines à réluctance variable et à aimant : structure à concentration de flux." Toulouse, INPT, 1995. http://www.theses.fr/1995INPT090H.
Dahmane, Mansour. "Machine à reluctance variable en fonctionnement moteur/générateur : contribution à l'optimisation de la structure et de l'alimentation." Vandoeuvre-les-Nancy, INPL, 2002. http://www.theses.fr/2002INPL086N.
The model of the Switched Reluctance Machines (SRM) is established. It is based on the knowledge of an analytic function of the flux which is calculated using a finite element code. We propose an interpolation method called method of Krigeage to obtain a function of the flux twice derivable according to the phase current and to the position of the rotor. We use this model to calculate the performances, in motor and generator modes, of three machines: three phases (structure 6/4), four phases (structure 8/6) and five phases (structure 10/8) with fixed current of the continuous source and fixed extemal dimensions. We show that the performances of this machines decrease with the speed. To resolve this problem, we propose to feed (in motoring and generating modes) the SRM by several structures of converters which are equipped with different boost capacitor circuit
Belhadi, M'hamed. "Étude de machines à réluctance variable pour une application de traction électrique : réduction des ondulations de couple et des efforts radiaux." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112185.
This report deals with switched reluctance motor by offering design solutions to the drawbacks of torque ripples and radial forces in the same time. Torque ripples reduce the user comfort and radial forces are the origin of noise. In the first part, an axial structure characterized by low radial force is analysed. Indeed, an axial configuration with two stators and one rotor is the most appropriate to replace the reference radial machine. Ones the rules of passage from one structure to another are established, the axial structure is then compared to the reference one. A first passage is made by keeping the same volume and a second one by sizing the axial machine with the same specifications as the radial one. In the second part, the work concerns the modification of radial structure of the reference machine and its optimization. Several modifications are proposed including a structure with a magnetic wedge which is the most efficient. Geometric optimization using genetic algorithm are then performed on operating points to remedy the both problems. In the end, several optimized structures are proposed. The choice of the most suitable machine can be done by making a compromise between the torque maximization, reducing its ripples and reducing radial forces
Zaharia, Mihai Valentin. "Contributions à l’étude des machines à reluctance variable pour application alterno-démarreur automobile." Thesis, Ecole centrale de Lille, 2016. http://www.theses.fr/2016ECLI0022/document.
The switched reluctance machine has a simple construction making it cheaper in execution but one of the drawbacks of this machine is the torque ripple. This thesis had as first target, the usage of an optimization tool to calculate the best control parameters to correct this major drawback in motor and generator operation modes. Hence, an analytical model that takes into account the machine geometry and that is able to be simulated in both operation modes by adjusting the commutation angles was provided and implemented in a calculation environment. The second target of this work is to investigate a method to reduce the optimization time without lowering the accuracy of the results. The strategy used in the optimization process is known in literature as the space mapping technique, more precisely for this thesis output space mapping proportional and manifold mapping were studied. After testing them on a mathematical model it was possible to continue the investigation on defining the optimal control parameters of a three-phases 6/8 SR machine prototype, being able that further to use this strategy in a much complicated process, i.e. defining the right geometry and control of a SR machine to be used in automotive integrated starter alternator systems. The final target of the thesis was to conduct experiments and tests on the existing prototype in order to partially validate the results of the optimization process
Djebarri, Sofiane. "Contribution à la modélisation et à la conception optimale de génératrices à aimants permanents pour hydroliennes." Thesis, Brest, 2015. http://www.theses.fr/2015BRES0012/document.
The improvements of marine current turbines drive train are key features to ensure safe operation and to make tidal energy resource cost-attractive. In this context, eliminating mechanical systems that demand high-level of maintenance can be an interesting way to improve the global behavior of tidal turbines. For that purposes, the presented studies focus on design methodologies and concepts of direct-driven generators associated with fixed-pitch turbines. The proposed designs are based on multiphysics models of the generator that are integrated in an optimization process taking into account the drive train environment. For these reasons, several models have been integrated into a global design strategy in order to find solutions that improve marine current turbines performances. This strategy is based on the use of an optimization process that combines electromagnetic model, thermal model, turbine performances model, and tidal resource velocity profile. This methodology integrates also an efficient control strategy based on a maximum power point tracking (MPPT) approach at low tidal speed and a flux-weakening power limitation control at high tidal speed. This control at high tidal velocities is in this work achieved by considering only the generator electrical control without using blade pitching systems. The obtained results highlight trends that could lead to an improvement of the design and they help designers to set relevant technological choices in order to ensure significant cost reduction and highly improve the reliability of marine current turbines
Yammine, Samer. "Contribution to the Synchronous Reluctance Machine Performance Improvement by Design Optimization and Current Harmonics Injection." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/14555/1/yammine.pdf.
Частини книг з теми "Machines à mémoire de flux variable":
Haithem Lazreg, Mohamed, and Abderrahim Bentaallah. "Improved Direct Torque Control Based on Neural Network of the Double-Star Induction Machine Using Deferent Multilevel Inverter." In Direct Torque Control Strategies of Electrical Machines [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.89877.
Тези доповідей конференцій з теми "Machines à mémoire de flux variable":
Charamba, Anesu Nicholas, Lesedi Masisi, and Maged Ibrahim. "Variable Flux Machines: A Review." In 2024 32nd Southern African Universities Power Engineering Conference (SAUPEC). IEEE, 2024. http://dx.doi.org/10.1109/saupec60914.2024.10445049.
Owen, Richard, Z. Q. Zhu, J. B. Wang, D. A. Stone, and I. Urquhart. "Review of variable-flux permanent magnet machines." In 2011 International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2011. http://dx.doi.org/10.1109/icems.2011.6073754.
Wang, Mingqiao, Chengde Tong, Ping Zheng, Jingdong Chen, Guangyuan Qiao, and Faliang Liu. "An Adaptive Rotor Flux Observer for Variable Flux Machine." In 2018 21st International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2018. http://dx.doi.org/10.23919/icems.2018.8549070.
Ahmad, M. Z., E. Sulaiman, G. M. Romalan, M. Jenal, and T. Kosaka. "Three-phase variable flux outer-rotor switched flux permanent magnet machine." In 2016 XXII International Conference on Electrical Machines (ICEM). IEEE, 2016. http://dx.doi.org/10.1109/icelmach.2016.7732882.
Owen, Richard, Z. Q. Zhu, J. B. Wang, D. A. Stone, and I. Urquhart. "Mechanically adjusted variable-flux concept for switched-flux permanent-magnet machines." In 2011 International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2011. http://dx.doi.org/10.1109/icems.2011.6073502.
Liu, Dabin, Hui Yang, Rui Tu, Xing Liu, Xiping Liu, Heyun Lin, Ya Li, and Wei Liu. "Design and Analysis of a Novel Segmented PM Variable Leakage Flux Machine Considering Variable Flux Range." In 2023 26th International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2023. http://dx.doi.org/10.1109/icems59686.2023.10344882.
Athavale, Apoorva, Kensuke Sasaki, Takashi Kato, and Robert D. Lorenz. "Magnetization state estimation in variable-flux PMSMs." In 2017 IEEE International Electric Machines and Drives Conference (IEMDC). IEEE, 2017. http://dx.doi.org/10.1109/iemdc.2017.8002081.
Abe, Takashi, Kyosuke Maeda, and Tsuyoshi Higuchi. "Variable field flux characteristics of a novel claw pole type half-wave rectified variable field flux motor." In 2015 18th International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2015. http://dx.doi.org/10.1109/icems.2015.7385369.
Zhu, Z. Q., M. M. J. Al-ani, X. Liu, M. Hasegawa, A. Pride, and R. Deodhar. "Comparison of alternate mechanically adjusted variable flux switched flux permanent magnet machines." In 2012 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2012. http://dx.doi.org/10.1109/ecce.2012.6342481.
Sakai, K., and S. Kataoka. "Variable-magnetization PM-motor Yield Widely Variable Flux due to Small Magnetizing Current." In 2020 International Conference on Electrical Machines (ICEM). IEEE, 2020. http://dx.doi.org/10.1109/icem49940.2020.9270847.