Увійти

Готові списки джерел за темами / Machines à mémoire de flux variable / Статті в журналах

Статті в журналах з теми "Machines à mémoire de flux variable"

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Machines à mémoire de flux variable.

Автор: Grafiati

Опубліковано: 8 червня 2024

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-50 статей у журналах для дослідження на тему "Machines à mémoire de flux variable".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте статті в журналах для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

3

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

5

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

6

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

This paper overviews the recent advances in flux-adjustable permanent magnet (PM) machines for traction applications. The flux-adjustable PM machines benefit from the synergies of the high torque density and high efficiency in conventional PM machines as well as the controllable air-gap field in wound-field machines, which are attractive for the traction applications requiring enhanced capabilities of speed regulation and uncontrolled voltage mitigation. In general, three solutions have been presented, namely the hybrid excited (HE), the mechanically regulated (MR), and the variable flux memory (VFM) machines. Numerous innovations were proposed on these topics during the last two decades, while each machine topology has its own merits and demerits. The purpose of this paper is to review the development history and trend of the flux-adjustable PM machines, with particular reference to their topologies, working mechanism, and electromagnetic performance.

7

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

8

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

9

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

10

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Yang, Hui, Heyun Lin, Erxing Zhuang, Shuhua Fang, and Yunkai Huang. "Investigation of design methodology for non‐rare‐earth variable‐flux switched‐flux memory machines." IET Electric Power Applications 10, no. 8 (September 2016): 744–56. http://dx.doi.org/10.1049/iet-epa.2015.0427.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Hanene, Hleli, Flah Aymen, and Tounsi Souhir. "Variable reluctance synchronous machines in saturated mode." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 2 (June 1, 2021): 662. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp662-673.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Electric vehicle seems largely based on electrical machines. Finding the best motor type seems be important for having more performances and a transport system robustness. In this work, we present an analytical model of the synchronous machine with variable reluctances in linear and saturated modes. The angular position of the rotor (θ) and the phase current (i) will beused as parameters. The analytical model of this machine will allow us to determinate its magnetic characteristics such inductors, magnetic flux and electromagnetic torque. The results obtained by the analytical model are compared with those obtained by the finite element method. So, basing on Matlab/Simulink tool and by working with finite element method, these results are depicted and the paper objective is illustrated.

13

Mörée, Gustav, and Mats Leijon. "Overview of Hybrid Excitation in Electrical Machines." Energies 15, no. 19 (October 2, 2022): 7254. http://dx.doi.org/10.3390/en15197254.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Hybrid excitation is a technology that combines the advantages of field windings and permanent magnets for inducing magnetic flux. This article studies the benefits of hybrid excitation and provides an outlook on their possible applications, such as wind power generators and electric vehicle motors. Compared to permanent magnet-based machines, hybrid excitation gives a variable flux while still using the advantage of the permanent magnets for a portion of the flux. This article also looks into some different categories of machines developed for hybrid excitation. The categories are based on the reluctance circuit, the relative geometrical location of the field windings relative to the permanent magnets, or the placement of the excitation system.

14

Hwang, Young Jin, Jae Young Jang, and SangGap Lee. "A Flux-Controllable NI HTS Flux-Switching Machine for Electric Vehicle Applications." Applied Sciences 10, no. 5 (February 25, 2020): 1564. http://dx.doi.org/10.3390/app10051564.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

This paper deals with a flux-controllable NI HTS flux-switching machine (FSM) for electric vehicle (EV) applications. In a variable-speed rotating machine for EVs, such as electric buses, electric aircraft and electric ships, an electric motor capable of regulating the flux offers the advantage of constant output operation. In general, conventional HTS rotating machines have excellent flux-regulation performance, because they excite an HTS field coil. However, it is difficult to ensure any flux-regulation capabilities in HTS rotating machines using HTS field coils that apply the no-insulation (NI) winding technique, due to the inherent charge and discharge delays in these machines. Nevertheless, the NI winding technique is being actively researched as a key technology for the successful development of HTS rotating machines, because it can dramatically improve the operational stability of HTS field coils. Therefore, research to implement an HTS rotating machine with flux-regulation capabilities, while improving the operating stability of the HTS field coil using the NI winding technique, is required for EV applications. In this paper, we propose an HTS rotating machine with a flux switching structure, a type of topology of a rotating machine that is being actively studied for application to the electric motors used in EVs. The proposed HTS flux-switching machine (FSM) uses NI field coils, but additional field windings are applied for flux regulation, which enables flux control. In this study, an NI HTS field coil was also fabricated and tested because the characteristic resistance value should be used for the design and characteristic analyses of machines which utilize an NI coil. The simulation model used to analyze the flux-regulation performance capabilities of the NI HTS FSM were devised based on the characteristic resistance values obtained from a charging test of the fabricated NI HTS field coil. This study can provide a good reference for further research, including work on the manufacturing of a prototype NI HTS FSM for EV applications, and it can be used as a reference for the development of other HTS rotating machines, such as those used in large-scale wind power generation, where flux-regulation capabilities are required.

15

Ballestín-Bernad, Víctor, Jesús Sergio Artal-Sevil, and José Antonio Domínguez-Navarro. "A Review of Transverse Flux Machines Topologies and Design." Energies 14, no. 21 (November 1, 2021): 7173. http://dx.doi.org/10.3390/en14217173.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

High torque and power density are unique merits of transverse flux machines (TFMs). TFMs are particularly suitable for use in direct-drive systems, that is, those power systems with no gearbox between the electric machine and the prime mover or load. Variable speed wind turbines and in-wheel traction seem to be great-potential applications for TFMs. Nevertheless, the cogging torque, efficiency, power factor and manufacturing of TFMs should still be improved. In this paper, a comprehensive review of TFMs topologies and design is made, dealing with TFM applications, topologies, operation, design and modeling.

16

Prajzendanc, Pawel, and Piotr Paplicki. "Performance Evaluation of an Axial Flux Machine with a Hybrid Excitation Design." Energies 15, no. 8 (April 8, 2022): 2733. http://dx.doi.org/10.3390/en15082733.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Variable speed, permanent magnet synchronous machines with hybrid excitation have attracted much attention due to their flux-control potential. In this paper, a design of permanent magnet axial flux machines with iron poles in the rotor and an additional electrically controlled source of excitation fixed on the stator is presented. This paper shows results pertaining to air-gap flux control, electromagnetic losses, electromagnetic torque, back emf and efficiency maps obtained through field-strengthening and weakening operations and investigated by 3D finite element analysis. Moreover, the temperature distribution of the machine was analyzed according to the fluid–thermal coupling method. The presented machine was prototyped and experimentally tested to validate the effectiveness of numerical models and achieved results.

17

Zhong, Yuxiang, Heyun Lin, Zhiyong Chen, Shukang Lyu, and Hui Yang. "Online-Parameter-Estimation-Based Control Strategy Combining MTPA and Flux-Weakening for Variable Flux Memory Machines." IEEE Transactions on Power Electronics 37, no. 4 (April 2022): 4080–90. http://dx.doi.org/10.1109/tpel.2021.3126581.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Zhu, Z. Q., Hao Hua, Adam Pride, Rajesh Deodhar, and Toshinori Sasaki. "Analysis and Reduction of Unipolar Leakage Flux in Series Hybrid Permanent-Magnet Variable Flux Memory Machines." IEEE Transactions on Magnetics 53, no. 11 (November 2017): 1–4. http://dx.doi.org/10.1109/tmag.2017.2706764.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Yang, Hui, Heyun Lin, and Z. Q. Zhu. "Recent advances in variable flux memory machines for traction applications: A review." CES Transactions on Electrical Machines and Systems 2, no. 1 (March 2018): 34–50. http://dx.doi.org/10.23919/tems.2018.8326450.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Liu, X., and Z. Q. Zhu. "Stator/Rotor Pole Combinations and Winding Configurations of Variable Flux Reluctance Machines." IEEE Transactions on Industry Applications 50, no. 6 (November 2014): 3675–84. http://dx.doi.org/10.1109/tia.2014.2315505.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Huang, L. R., J. H. Feng, S. Y. Guo, Y. F. Li, J. X. Shi, and Z. Q. Zhu. "Rotor Shaping Method for Torque Ripple Mitigation in Variable Flux Reluctance Machines." IEEE Transactions on Energy Conversion 33, no. 3 (September 2018): 1579–89. http://dx.doi.org/10.1109/tec.2018.2829493.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Song, Zhanfeng, Siyu Hu, and Zhongqiang Bao. "Variable Action Period Predictive Flux Control Strategy for Permanent Magnet Synchronous Machines." IEEE Transactions on Power Electronics 35, no. 6 (June 2020): 6185–97. http://dx.doi.org/10.1109/tpel.2019.2953941.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Ullah, Noman, Abdul Basit, Faisal Khan, Wasiq Ullah, Mohsin Shahzad, and Atif Zahid. "Enhancing Capabilities of Double Sided Linear Flux Switching Permanent Magnet Machines." Energies 11, no. 10 (October 16, 2018): 2781. http://dx.doi.org/10.3390/en11102781.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Double sided linear flux switching permanent magnet machines (DSLFSPMMs) exhibit high thrust force density, high efficiency, low cost and robust double salient secondary (stator) structures. The aforementioned unique features make DSLFSPMM suitable for long stroke applications. However, distorted flux linkage waveforms and high detent forces can exaggerate thrust force ripples and reduce their applicability in many areas. In order to enhance thrust force performance, reduce thrust force ripple ratio and total harmonic distortion (THD) of no-load flux linkages, two structure-based advancements are introduced in this work, i.e., asynchronous mover slot and stator tooth displacement technique (AMSSTDT) and the addition of an active permanent magnet end slot (APMES). Furthermore, single variable geometric optimization (SVGO) is carried out by the finite element method (FEM).

24

Mohamad Nordin, Norjulia, Naziha Ahmad Azli, Nik Rumzi Nik Idris, Nur Huda Ramlan, and Tole Sutikno. "Constant Frequency Torque Controller for DTC with Multilevel Inverter of Induction Machines." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 1 (March 1, 2016): 28. http://dx.doi.org/10.11591/ijpeds.v7.i1.pp28-44.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Direct Torque Control using multilevel inverter (DTC-MLI) with hysteresis controller suffers from high torque and flux ripple and variable switching frequency. In this paper, a constant frequency torque controller is proposed to enhance the DTC-MLI performance. The operational concepts of the constant switching frequency torque controller of a DTC-MLI system followed by the simulation results and analysis are presented. The proposed system significantly improves the DTC drive in terms of dynamic performance, smaller torque and flux ripple, and retain a constant switching frequency.

25

Cui, Yingjie, Munawar Faizan, and Zhongxian Chen. "Back EMF Waveform Comparison and Analysis of Two Kinds of Electrical Machines." World Electric Vehicle Journal 12, no. 3 (September 8, 2021): 149. http://dx.doi.org/10.3390/wevj12030149.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

In this study, the back electromotive force (EMF) waveforms of a flux switching permanent magnet (FSPM) machine and variable flux memory permanent magnet (VFMPM) machine with same main dimension were researched. Firstly, the simulation result showed that the maximum amplitude of phase back EMF waveform of FSPM machine was 245% larger than that of the VFMPM machine, and this was verified by the experimental result (243%). Secondly, the phase back EMF harmonics of the FSPM machine and VFMPM machine were compared, including the enhance flux condition and weaken flux condition of VFMPM machine. At last, the mutual demagnetization effect, which led to the difference amplitudes of maximum back EMF waveform between FSPM machine and VFMPM machine was analyzed. The comparison and analysis of the back EMF waveform will provide some qualitative advice for the future application research of the FSPM machine and VFMPM machine, such as application selection, optimization control method and so on.

26

Le, Phuong Minh, Phong Hoai Nguyen, and Hung Ngoc Dang. "Adaptive-Loss minimization control for speed sensorless induction machines." Science and Technology Development Journal 17, no. 2 (June 30, 2014): 33–44. http://dx.doi.org/10.32508/stdj.v17i2.1356.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

This paper presents a new online loss-minimization algorithm in the adaptive control model for speed sensorless based on the Direct Rotor Flux Oriented Control (DRFOC) with optimum flux in the condition of do variable stator resistance. The paper also presents a new approach to develop a reference and adaptive models to estimate the speed and to observe stator resistance change. Simulation results in Matlab Simulink showed good adaptability of the presented model controls even when the stator resistance changes to up 200% of rated. In addition, using the proposed algorithm allows reducing losses and improving efficiency of proposed control model in comparison with DRFOC traditional model for load range 0-70% of the rated. Where the difference of efficient can reach 42%, and the difference in loss to 85%.

27

Xie, Ying, Zhaoyang Ning, and Zexin Ma. "Comparative Study on Variable Flux Memory Machines With Different Arrangements of Permanent Magnets." IEEE Access 8 (2020): 164304–12. http://dx.doi.org/10.1109/access.2020.3022595.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Yang, Hui, Z. Q. Zhu, Heyun Lin, Shuhua Fang, and Yunkai Huang. "Comparative Study of Novel Variable-Flux Memory Machines Having Stator Permanent Magnet Topologies." IEEE Transactions on Magnetics 51, no. 11 (November 2015): 1–4. http://dx.doi.org/10.1109/tmag.2015.2451642.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Hua, Hao, Z. Q. Zhu, Adam Pride, Rajesh Deodhar, and Toshinori Sasaki. "Comparative Study on Variable Flux Memory Machines With Parallel or Series Hybrid Magnets." IEEE Transactions on Industry Applications 55, no. 2 (March 2019): 1408–19. http://dx.doi.org/10.1109/tia.2018.2879858.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Liu, Faliang, Luming Cheng, Mingqiao Wang, Guangyuan Qiao, Ping Zheng, and Hui Yang. "Comparative study of hybrid-PM variable-flux machines with different series PM configurations." AIP Advances 9, no. 12 (December 1, 2019): 125241. http://dx.doi.org/10.1063/1.5129828.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Huang, Liren, Jianghua Feng, Shuying Guo, Junxu Shi, and Zi Qiang Zhu. "Analysis of power factor in variable flux reluctance machines with MMF‐permeance model." IET Electric Power Applications 13, no. 5 (January 24, 2019): 614–24. http://dx.doi.org/10.1049/iet-epa.2018.5301.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Huang, Yunrui, Hui Yang, Hao Zheng, Heyun Lin, and Z. Q. Zhu. "Analysis of flux barrier effect of LCF PM in series hybrid magnet variable flux memory machine." AIP Advances 13, no. 2 (February 1, 2023): 025230. http://dx.doi.org/10.1063/9.0000611.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Variable flux memory machines (VFMMs) with series hybrid magnets using both low coercive force (LCF) and high coercive force (HCF) permanent magnets (PMs) have been recognized as a viable candidate for wide-speed-range industrial applications due to the advantages of high torque density and wide speed range. Nevertheless, the adverse effects of LCF PM on the HCF PM in series-type VFMM under different magnetization states (MSs) are still unreported. In this paper, the flux barrier effect (FBE) of the LCF PM existing in series hybrid magnet VFMM is first revealed, and its causes are discussed as well as analyzed in depth on the basis of the equivalent magnetic circuit method and finite-element (FE) analyses. A topology of VFMM with dual-layer PMs is further developed to alleviate the FBE induced from LCF PMs. It can be found that the FBE can be effectively suppressed by employing the dual-layer (DL) PM arrangement and additional leakage flux paths. A prototype of the proposed design is built, and the theoretical and FE results are experimentally verified.

33

Qasim, Muhammad, Faisal Khan, Basharat Ullah, Himayat Ullah Jan, and Hend I. Alkhammash. "Analysis of Linear Hybrid Excited Flux Switching Machines with Low-Cost Ferrite Magnets." Energies 15, no. 4 (February 13, 2022): 1346. http://dx.doi.org/10.3390/en15041346.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Linear hybrid excited flux switching machines (LHEFSM) combine the features of permanent magnet flux switching machines (PMFSM) and field excited flux switching machines (FEFSM). Because of the widespread usage of rare-earth PM materials, their costs are steadily rising. This study proposes an LHEFSM, a dual stator LHEFSM (DSLHEFSM), and a dual mover LHEFSM (DMLHEFSM) to solve this issue. The employment of ferrite magnets rather than rare-earth PM in these suggested designs is significant. Compared to traditional designs, the proposed designs feature greater thrust force, power density, reduced normal force, and a 25% decrease in PM volume. A yokeless primary structure was used in a DSLHEFSM to minimize the volume of the mover, increasing the thrust force density. In DMLHELFSM, on the other hand, a yokeless secondary structure was used to lower the secondary volume and the machine’s total cost. Single variable optimization was used to optimize all of the proposed designs. By completing a 3D study, the electromagnetic performances acquired from the 2D analysis were confirmed. Compared to conventional designs, the average thrust force in LHEFSM, DSLHEFSM, and DMLHEFSM was enhanced by 15%, 16.8%, and 15.6%, respectively. Overall, the presented machines had a high thrust force density, a high-power density, a high no-load electromotive force, and a low normal force, allowing them to be used in long-stroke applications.

34

Gu, Xiangpei, Nicola Bianchi, and Zhuoran Zhang. "Analysis and Preliminary Design of Variable Flux Reluctance Machines: A Perspective from Working Field Harmonics." Vehicles 6, no. 1 (March 21, 2024): 571–89. http://dx.doi.org/10.3390/vehicles6010026.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Variable flux reluctance machines (VFRMs) are increasingly attracting research interest due to their magnetless and robust brushless structure. Under the modulation effect of the airgap permeance, the VFRM operates with a series of field harmonics, distinguishing it from conventional AC synchronous machines. This paper deals with the analysis and preliminary design of the VFRM from the perspective of multiple working airgap field harmonics. Firstly, the spatial and temporal order of the working field harmonics are defined. The systematic winding theory, including the unified star of slots and winding factor calculation method, is established to consider all these working harmonics. Then, an average torque model is built and simplified. The key role of 1st-order rotor permeance, 1st- and 3rd-order polarized stator permeance is deduced. The relationship between key parameters and average torque is computed, providing a guideline for the preliminary design of the VFRM.

35

Yu, Mingjie, Wenliang Zhao, Cong Liu, Xiuhe Wang, and Byung-il Kwon. "Design and analysis of a novel variable flux spoke-type motor for washing machines." International Journal of Applied Electromagnetics and Mechanics 64, no. 1-4 (December 10, 2020): 91–101. http://dx.doi.org/10.3233/jae-209311.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

This paper deals with the design and analysis of a novel variable flux spoke-type motor (VFSM) for washing machines by focally considering the performance at the laundry and spin-drying operating modes. The key design goal is to obtain the high efficiency for the two operating modes. At the laundry mode, the ferrite and AlNiCo magnets are utilized together as the excitations to obtain a high magnetic loading, thus to obtain high torque and efficiency. At the spin-drying mode, the AlNiCo magnets are demagnetized by a pulse negative d-axis current to reduce magnetic flux density, thus to obtain low iron loss and high efficiency. The outer rotor structure with the spoke-type magnet configuration is utilized to enhance the high output performances. The D2L method is utilized to design the key parameters of the VFSM. To demonstrate the superiority of the designed VFSM, the electromagnetic characteristics are predicted by the finite element method (FEM). As a result, the volume size of the proposed VFSM is decreased by 19.4%, and the efficiency at the low-speed laundry mode is increased by 25.4%, when compared to the referenced commercial washing machine motor.

36

Liu, X., and Z. Q. Zhu. "Electromagnetic Performance of Novel Variable Flux Reluctance Machines With DC-Field Coil in Stator." IEEE Transactions on Magnetics 49, no. 6 (June 2013): 3020–28. http://dx.doi.org/10.1109/tmag.2012.2235182.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Yang, Hui, Hao Zheng, Heyun Lin, Zi-Qiang Zhu, Weinong Fu, Wei Liu, Jiaxing Lei, and Shukang Lyu. "Investigation of Hybrid-Magnet-Circuit Variable Flux Memory Machines With Different Hybrid Magnet Configurations." IEEE Transactions on Industry Applications 57, no. 1 (January 2021): 340–51. http://dx.doi.org/10.1109/tia.2020.3033836.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Ge, Meng, Jian Li, Ronghai Qu, Yang Lu, and Junhua Chen. "A Synthetic Frozen Permeability Method for Torque Separation in Hybrid PM Variable-Flux Machines." IEEE Transactions on Applied Superconductivity 28, no. 3 (April 2018): 1–5. http://dx.doi.org/10.1109/tasc.2018.2793202.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Lyu, Shukang, Hui Yang, and Heyun Lin. "Magnetization State Selection Method for Uncontrolled Generator Fault Prevention on Variable Flux Memory Machines." IEEE Transactions on Power Electronics 35, no. 12 (December 2020): 13270–80. http://dx.doi.org/10.1109/tpel.2020.2992250.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Zhang, Quan Kun, Yu Yu, Shuai Mei Lian, Hong Hu, and Yu Jian Zhang. "High-Order Terminal Sliding Mode Control for Brushless Doubly-Fed Machines." Applied Mechanics and Materials 685 (October 2014): 384–88. http://dx.doi.org/10.4028/www.scientific.net/amm.685.384.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

A novel sliding-mode variable structure(SMVS) control strategy is proposed to reduce the ripples of flux and torque of brushless double-fed machines(BDFM) based on direct torque control system. In order to ensure the constant switching frequency for the inverter, two hysteresis regulators in the conventional direct torque control system system are substituted by the SMVS controllers of flux and torque，nonsingular terminal sliding modes are designed to make the motor power reach the given values in a finite period of time. and the high-order sliding mode method is adopted to estimate the chattering phenomenon of the conventional sliding mode. Meanwhile, to obtain the parameters of High-order terminal sliding mode control, a method of fuzzy neural network is presented. The simulation results show that the nonsingular high-order terminal sliding-mode control can improve the robustness and dynamic response of the system.

41

Aib, A., D. E. Khodja, and S. Chakroune. "Field programmable gate array hardware in the loop validation of fuzzy direct torque control for induction machine drive." Electrical Engineering & Electromechanics, no. 3 (April 23, 2023): 28–35. http://dx.doi.org/10.20998/2074-272x.2023.3.04.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Introduction. Currently, the direct torque control is very popular in industry and is of great interest to scientists in the variable speed drive of asynchronous machines. This technique provides decoupling between torque control and flux without the need to use pulse width modulation or coordinate transformation. Nevertheless, this command presents two major importunities: the switching frequency is highly variable on the one hand, and on the other hand, the amplitude of the torque and stator flux ripples remain poorly controlled throughout the considered operating speed range. The novelty of this article proposes improvements in performance of direct torque control of asynchronous machines by development of a fuzzy direct torque control algorithm. This latter makes it possible to provide solutions to the major problems of this control technique, namely: torque ripples, flux ripples, and failure to control switching frequency. Purpose. The emergence of this method has given rise to various works whose objective is to show its performance, or to provide solutions to its limitations. Indeed, this work consists in validation of a fuzzy direct torque control architecture implemented on the ML402 development kit (based on the Xilinx Virtex-4 type field programmable gate array circuit), through hardware description language (VHDL) and Xilinx generator system. The obtained results showed the robustness of the control and sensorless in front of load and parameters variation of induction motor control. The research directions of the model were determined for the subsequent implementation of results with simulation samples.

42

Younsi, Mohamed Omar, Olivier Ninet, Fabrice Morganti, Jean-Philippe Lecointe, Farid Zidat, and Matthieu Buire. "Impact of supply voltage variations on external magnetic field emitted by induction machines." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 3 (May 2, 2017): 692–701. http://dx.doi.org/10.1108/compel-09-2016-0423.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Purpose This paper aims to study the influence of supply voltage variations on the external magnetic field emitted by grid-powered induction machines (IMs). Design/methodology/approach Two models are developed in the paper to analyse, for different supply voltage values, the influence of the variations of the magnetizing voltage for which there is a link with the tangential component of the external flux. The first is an analytical model based on the IM single-phase-equivalent circuit with variable magnetizing reactance to take into account the saturation of the magnetic circuit. The second is a numerical finite element simulation to model the same phenomenon. Results of both models are analysed with experimental measures of the external flux. Findings The study shows that the amplitude of the external field strongly depends on supply voltage values. Research limitations/implications The investigation is mainly focused on the tangential component of the external magnetic field which is of high importance concerning the applicability of non-invasive methods of diagnosis, as electromagnetic torque estimation developed by the authors or internal fault determination. Originality/value The originality of the paper concerns the characterization of the external flux with the supply voltage for IMs. It is shown that the magnetic circuit radiates external flux differently with the load and with the supply voltage.

43

Xu, Wei, and Wen Wu Yang. "Improved Model Based Predictive Torque Control Strategy with Fast Dynamic Response for Flux-Switching Permanent Magnet Machines." Applied Mechanics and Materials 416-417 (September 2013): 704–10. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.704.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

The flux-switching permanent magnet machine (FSPMM) has got great attention by academic researchers during the past couple of years for its merits of strong mechanical robustness, high efficiency, strong thermal dissipation ability, etc. However, for its inherited double salient structure in both stator and rotor, the FSPMM suffers from severe torque and flux ripples at different rotor positions for its variable magnetic resistance, which cannot be solved completely only by electromagnetic optimal design. In order to increase the drive performance of FSPMM, such as dynamic response and stable torque smoothness, an improved model based predictive torque control (MPTC) algorithm is proposed. By using the cost function modulation strategy, the torque and flux ripples of FSPMM are reduced evidently, accompanying with the minimized converter switching frequency and power loss. Comprehensive simulation investigations are finally carried out to validate relevant theoretical analysis.

44

Shi, J. T., X. Liu, D. Wu, and Z. Q. Zhu. "Influence of Stator and Rotor Pole Arcs on Electromagnetic Torque of Variable Flux Reluctance Machines." IEEE Transactions on Magnetics 50, no. 11 (November 2014): 1–4. http://dx.doi.org/10.1109/tmag.2014.2330363.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Huang, Liren, Z. Q. Zhu, Jianghua Feng, Shuying Guo, J. X. Shi, and Wenqiang Chu. "Analysis of Stator/Rotor Pole Combinations in Variable Flux Reluctance Machines Using Magnetic Gearing Effect." IEEE Transactions on Industry Applications 55, no. 2 (March 2019): 1495–504. http://dx.doi.org/10.1109/tia.2018.2883608.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Huang, Liren, Z. Q. Zhu, Jianghua Feng, Shuying Guo, and J. X. Shi. "Comparative Analysis of Variable Flux Reluctance Machines With Double- and Single-Layer Concentrated Armature Windings." IEEE Transactions on Industry Applications 55, no. 2 (March 2019): 1505–15. http://dx.doi.org/10.1109/tia.2018.2884608.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Hua, Hao, Z. Q. Zhu, Adam Pride, Rajesh P. Deodhar, and Toshinori Sasaki. "Comparison of End Effect in Series and Parallel Hybrid Permanent-Magnet Variable-Flux Memory Machines." IEEE Transactions on Industry Applications 55, no. 3 (May 2019): 2529–37. http://dx.doi.org/10.1109/tia.2018.2889979.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Chatterjee, Debashis. "A Simple Leakage Inductance Identification Technique for Three-Phase Induction Machines Under Variable Flux Condition." IEEE Transactions on Industrial Electronics 59, no. 11 (November 2012): 4041–48. http://dx.doi.org/10.1109/tie.2011.2176694.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Ullah, Wasiq, Faisal Khan, and Erwan Sulaiman. "Sub-domain modelling and multi-variable optimisation of partitioned PM consequent pole flux switching machines." IET Electric Power Applications 14, no. 8 (August 1, 2020): 1360–69. http://dx.doi.org/10.1049/iet-epa.2019.0993.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Murgoci, Dragoș, and Maricel Adam. "The Synchronous Electric Machine with Variable Geometry Done by Elastic Permanent Magnets." Bulletin of the Polytechnic Institute of Iași. Electrical Engineering, Power Engineering, Electronics Section 68, no. 4 (December 1, 2022): 91–114. http://dx.doi.org/10.2478/bipie-2022-0024.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Abstract The paper refers to an electric machine (motor/generator) with an adjustable magnetic field, because its rotor has a special construction that allows the deformation of its elastic permanent magnets. The permanent magnets deform due to a clamping stroke parameter and in this way the flux density of the magnetic field as well as the width and length of the permanent magnets are variable. The variable magnetic field crosses the stator coils which are supplied by the voltages and due to a variable magnetic flux density, a higher torque will result even at lower values of the currents. As a result, a higher efficiency will be obtained due to the increase in mechanical power and the decrease in losses (e.g., Joule effect) in the stator windings. The presented electric machine is a synchronous machine with variable geometry, belonging to the category of permanent magnet machines. Specific to this machine is the fact that the rotor magnets are elastic, being made of ferritic compound rubber with neodimium magnets N45.