Relevant bibliographies by topics / Permanent magnet research area

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  2. Dissertations / Theses
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  5. Conference papers
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Academic literature on the topic 'Permanent magnet research area'

Author: Grafiati
Published: 10 March 2023

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Journal articles on the topic "Permanent magnet research area"

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Eriksson, Sandra. "Permanent Magnet Synchronous Machines." Energies 12, no. 14 (July 23, 2019): 2830. http://dx.doi.org/10.3390/en12142830.

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Interest in permanent magnet synchronous machines (PMSMs) is continuously increasing worldwide, especially with the increased use of renewable energy and electrification of transports. This special issue contains the successful invited submissions of fifteen papers to a Special Issue of Energies on the subject area of “Permanent Magnet Synchronous Machines”. The focus is on permanent magnet synchronous machines and the electrical systems they are connected to. The presented work represents a wide range of areas. Studies of control systems, both for permanent magnet synchronous machines and for brushless DC motors, are presented and experimentally verified. Design studies of generators for wind power, wave power and hydro power are presented. Finite element method simulations and analytical design methods are used. The presented studies represent several of the different research fields on permanent magnet machines and electric drives.
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Bangun Giri Pamungkas, Suyitno, Daryanto, and Perdamean Sebayang. "PENGARUH DIMENSI MAGNET PERMANEN NdFeB DAN JARAK CELAH UDARA TERHADAP KINERJA GENERATOR MAGNET PERMANEN FLUKS AKSIAL SATU FASA." Journal of Electrical Vocational Education and Technology 2, no. 2 (March 29, 2020): 32–36. http://dx.doi.org/10.21009/jevet.0022.07.

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The purpose of this research is to know the influence of NdFeB permanent magnet dimensions and the distance of air gap on performance of single phase axial flux permanent magnet generator. In this research using quantitative approach with experimental method. Research subjects used, namely permanent magnetic generator axial flux with two rotor samples that have different magnetic dimensions and conducted air gap variation. The research data was collected by testing without load and testing with electrical load, to know the performance values of the generator in the form of induction voltage and electric power. The results showed that the induction voltage and electric power were affected by the magnetic dimensions and the distance of the air gap. These results indicate that the rotor with a magnetic surface area of 0.0058 m2 and 0.0034 m2 produces an induced voltage of 91.7 and 27.1 V, as well as a power of 14 and 2.8 W. Whereas, for variations in the air gap with the rotor magnetic surface area 0.0058 m2 and varied 2; 3; 4; 5; and 6 mm produces an induced voltage of 91.7; 89.0; 86.5; 80.2; and 68.5 V, and power of 14; 12; 10.9; 10.5; and 8.8 W. Thus, the use of a magnet ic dimension that is larger and in accordance with the size of the coil, as well as the use of a small air gap distance will result in a better induction voltage value. Abstrak Tujuan dari penelitian ini adalah untuk mengetahui pengaruh dimensi magnet permanen NdFeB dan jarak celah udara terhadap kinerja generator magnet permanen fluks aksial satu fasa. Pada penelitian ini menggunakan pendekatan kuantitatif dengan metode eksperimen. Subjek penelitian yang digunakan, yaitu generator magnet permanen fluks aksial dengan dua sampel rotor yang memiliki dimensi magnet berbeda dan dilakukan variasi celah udara. Pengumpulan data penelitian dilakukan dengan pengujian tanpa beban dan pengujian dengan beban listrik, untuk mengetahui nilai-nilai kinerja generator berupa tegangan induksi dan daya listriknya. Hasil penelitian menunjukkan bahwa tegangan induksi dan daya listrik dipengaruh oleh dimensi magnet dan jarak celah udara. Hasil tersebut menunjukkan bahwa pada rotor dengan luas permukaan magnet 0,0058 m2 dan 0,0034 m2 menghasilkan tegangan induksi sebesar 91,7 dan 27,1 V, serta daya sebesar 14 dan 2,8 W. Sedangkan, pada variasi celah udara dengan rotor luas permukaan magnet 0,0058 m2 dan divariasi 2; 3; 4; 5; dan 6 mm menghasilkan tegangan induksi sebesar 91.7; 89.0; 86.5; 80.2; dan 68.5 V, serta daya sebe sar 14; 12; 10,9; 10,5; dan 8,8 W. Maka, penggunaan dimensi magnet yang lebih besar dan sesuai dengan ukuran kumparan, serta penggunaan jarak celah udara yang kecil akan menghasilkan nilai tegangan induksi yang lebih baik.
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Xia, Tian, Falong Zhu, Peng Kang, Buyun Sheng, and Yiming Qiu. "An optimal design of the coolant channel across the stator core of the permanent magnet motor." International Journal of Applied Electromagnetics and Mechanics 68, no. 3 (March 14, 2022): 347–69. http://dx.doi.org/10.3233/jae-210142.

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For avoiding the damage of the insulation and permanent magnet, the temperature rise of the PMSM (permanent magnet synchronous motor) should be controlled strictly, it is usually one of the main objectives during improving the output power and torque density beyond the state-of-the-art in motor design. In this research, the coolant channel will be placed within the yoke of the stator core to enhance the heat transfer between the stator core and the coolant. Hydrophobic coating is applied to replace the metal tube for increasing the utilization of the cross area of the coolant channel. The impact of the coolant channel on the performance of the permanent magnet motor is analyzed. A general design method of the coolant channel is presented. The result shows that the change of the stator core loss is within about 10% as the coolant channel is moved away from the slot along the radial direction while the back electromotive force of the motor could keep constant through appropriate design. The impacts of the coolant channels on the magnet performance and the heat dissipation performance could be divided completely with the design method. The method can be applied on various PMSM including SPM (surface-mounted permanent magnet motor) and IPMSM (interior permanent magnet synchronous motor). Sufficient coolant flow could be provide to help conduct the temperature rise of the motor.
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Bai, Gong Ding, Jun Hua Liu, Wei Gang Shan, Bo Zhao, Xue Mei Zhang, Yong Chang Bian, Xin Zhong Wang, and Zhen Qi Niu. "Research of PMSM Stator Current Collection System Design Based on C8051F500 and AD7865." Applied Mechanics and Materials 433-435 (October 2013): 1458–62. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.1458.

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Permanent magnet synchronous motor (PMSM) now is widely used in hybrid vehicle drive area. When the space vector pulse width modulation (SVPWM) is used in PMSM control, the stator three phase currents must be collected for its control calculation. In this paper, a PMSM stator current collection system based on C8051F500 and AD7865 is designed, and proved to be effective with experiments.
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Oktaviani, Wiwin A., Taufik Barlian, and Yosi Apriani. "Studi Awal Karakteristik Tegangan Ouput Generator Magnet Permanen dan Generator DC pada Turbin Kubah Masjid Putar." Electrician 14, no. 2 (May 15, 2020): 56–63. http://dx.doi.org/10.23960/elc.v14n2.2149.

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Intisari — Setiap yang berputar memiliki potensi energi kinetik, tidak terkecuali putaran kubah masjid. Penelitian ini bertujuan untuk mengetahui potensi pemanfaatan kubah putar masjid sebagai penghasil energi listrik skala kecil. Generator yang diuji cobakan adalah generator magnet permanen dan generator DC yang dirangkaikan dengan turbin kubah putar. Pengujian dilakukan di dua lokasi, di Jembatan Musi 2 Palembang dan di perairan Sungsang Kabupaten Banyuasin untuk mengukur besaran tegangan dan arus output yang dihasilkan pada berbagai kecepatan angin menggunakan multimeter dan anemometer. Hasil penelitian menunjukkan bahwa tegangan yang dihasilkan oleh putaran kubah masjid menggunakan generator magnet permanen mampu mencapai 14,21 V pada kecepatan angin 3,8 m/det dibandingkan dengan generator DC yang hanya mencapai 3 V pada kecepatan angin 8 m/det. Jika ditinjau dari besaran arus, generator magnet permanen menghasilkan arus konstan sebesar 0,3 A sedangkan pada generator DC arus yang dihasilkan tidak terukur karena nilainya yang amat kecil. Penelitian ini menunjukkan bahwa kubah putar masjid dapat dijadikan sebagai turbin angin pada daerah yang memiliki kecepatan angin rendah. Kata kunci — kubah masjid putar,generator magnet permanen,generatorDC, turbin angin kecepatan rendah Abstract - Every spinning has kinetic energy potential; the mosque dome is no exception. This study aims to determine the potential use of the mosque's turning dome as a producer of small-scale electrical energy. Two types of the generator were tested, which were permanent magnet generator and DC generator, which were coupled with a rotary dome turbine. The test was carried out at two locations, at Palembang Musi 2 Bridge and in the waters of Sungsang, Banyuasin Regency, to measure the amount of voltage and output current generated at various wind speeds using a multimeter and anemometer. The results showed that the voltage generated by the mosque's dome rotation using a permanent magnet generator was able to reach 14.21 V at wind speeds of 3.8 m / sec compared to DC generators, which only reached 3 V at 8 m / s wind speed. When viewed from the amount of current, permanent magnet generators produce a constant current of 0.3 A while in DC generators, the current generated is not measurable because the value is minimal. This research shows that the mosque's rotary dome can be used as a wind turbine in areas that have low wind speeds. Keywords - rotary mosque domes, permanent magnet generators, generator DC, low speed wind turbines
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Pang, Da-Chen, Zhen-Jia Shi, Young-Ho Chang, Hua-Chih Huang, and Gia-Thinh Bui. "Investigation of an Interior Micro Permanent Magnet Synchronous Motor." Energies 14, no. 14 (July 10, 2021): 4172. http://dx.doi.org/10.3390/en14144172.

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This study describes the development of the world’s smallest interior permanent magnet synchronous motor (IPMSM) to increase the torque density of micromotors. The research evaluates the feasibility of the miniaturization of IPMSM since recent studies in this area focus on medium to large size compressor and traction motor applications. The standard-type and spoke-type IPMSM were selected for ease of micro machining. In order to surpass the performance of an inset motor of the same size used in previous research, the interior motors were designed with a different slot pole number, permanent magnet shape and rotor structure. Two types of interior motors were manufactured and tested to compare their performance. It was shown that the spoke-type interior motor had a better output torque, while the standard-type interior motor had a lower torque ripple, and both motors matched the specifications of commercially available motors. To achieve a higher torque density, the IPMSM designs increased the slot pole number from 6 slots 4 poles to 9 slots 6 poles. The torque density of the spoke-type motor was increased by 48% compared to the inset motor. The disadvantage is that the new design has a greater number of parts and smaller size, resulting in difficulties in manufacturing and assembly.
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Ruoff, Chad, Yasemin Tashman, Bernie Miller, Ryan Houser, Kamal Cheema, Caitlin Haley, Ann Petersen, et al. "0789 Mask Magnets May Interact with Pacemakers and Implantable Cardioverter-Defibrillators." Sleep 45, Supplement_1 (May 25, 2022): A342—A343. http://dx.doi.org/10.1093/sleep/zsac079.785.

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Abstract Introduction Placing a magnet over a Permanent Pacemaker (PPM) or Implanted Cardioverter-Defibrillator (ICD) may cause the device to pace asynchronously or inhibit tachyarrhythmia detection, respectively, potentially preventing delivery of electrical shocks. Manufacturers for masks used with positive airway pressure devices have started using magnets in place of more traditional headgear clips to connect the headgear to mask. Mask manufactures do not list presence of a PPM/ICD as a contraindication to use of a mask with magnet but do recommend keeping the mask some distance away from PPM/ICD. A published case series describes two patients with magnet response events captured during PPM/ICD interrogation that correlated with nightly use of CPAP. The authors were able to replicate the response by placing the mask with magnet directly over the patient’s pulse generate site. Although we advise all patients with implanted device to avoid use of masks with magnets, select patients refuse to stop using mask with magnets regardless of our policy. We, therefore, started offering these patients referral for PPM/ICD interrogation to evaluate for an interaction between mask with magnet and PPM/ICD as next best alternative. Methods We retrospectively reviewed all patients (n=10) referred for routine PPM/ICD interrogation to test whether the mask with magnet interacted with PPM/ICD when mask on face as during normal use (i.e., simulated normal use) or magnetic area of mask placed directly over the PPM/ICD (i.e., direct contact). Results Although no interaction was detected in any patient (n=10) with simulated normal use (0 %), one interaction was documented with direct contact (10 %). Conclusion Although simulated normal use of masks with magnets did not demonstrate any interactions, it is concerning that one patient (10 % of patients) demonstrated an interaction with direct contact of magnetic area of mask over the PPM/ICD. It is not uncommon for patients to remove a mask during the night while sleeping. This preliminary data along with the published case series calls for further research and increased awareness of this potential interaction for both sleep and cardiac health care providers. Support (If Any) None
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Ghani, Noor Syazana Abd, Taib Ibrahim, and Nursyarizal Mohd Nor. "Designing of a generator for wave energy conversion for outdoor activities." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 3 (September 1, 2020): 1415. http://dx.doi.org/10.11591/ijpeds.v11.i3.pp1415-1422.

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Wave energy is one of the renewable resources with high availability area of the wave across the world. However, the wave power density in Malaysia is smaller compared to other countries with progressive development in Wave Energy Converter (WEC), which leads to wave energy utilization to produce pico-scale power generation for the benefit of outdoor activities. Thus, this paper is presenting the modeling of a tubular longitudinal permanent magnet linear generator for wave energy conversion for outdoor activities. This research aims to design a pico-scale linear generator with 100 W output power utilizing wave energy. The design is also intended to be a portable design with a weight that less than 20 kg, which compatible with outdoor activities. The generator is proposed by designing the different shapes of permanent magnets with slotless configuration. The designs are simulated using the Finite Element Analysis (FEA) to obtain the performance of flux distribution, flux linkage, and back EMF performance.
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Andrianto, B., B. H. Iswanto, and W. Indrasari. "Faraday’s Law Teaching Aids Using Magnetometers on Smartphone and Infrared Sensors for Electromagnetic Induction Learning." Journal of Physics: Conference Series 2019, no. 1 (October 1, 2021): 012024. http://dx.doi.org/10.1088/1742-6596/2019/1/012024.

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Abstract Faraday’s law is one of the abstract physics materials. This research aims to develop Faraday’s Law teaching aids by combining smartphones and infrared sensors. This study uses the Research and Development method, which refers to the ADDIE model. The teaching aids consist of a 45 cm coil whose area is, a 4000 µT neodymium permanent magnet, an Arduino integrated infrared sensor, and a smartphone’s magnetometer sensor using the Phyphox application. The research trials were carried out by varying the number of coils and the height of the falling magnet. The test results obtained data in a magnetic field, the magnetic time passing through the coils, and voltage. Based on the induced emf obtained from observations and calculation results, there is an increase in the number of coils and the height of the falling magnet. This study concludes that Faraday’s law teaching aids can show the effect of the number of coils and the distance of the magnet falling on the magnitude of the induced emf. The developed Faraday’s law teaching aids can be used in the learning process of Faraday’s law.
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Li, Li, Dong Wang, Zong Wei Niu, Zhi Yong Li, and Guang Ming Yuan. "Ultrasonic Machining Aided Tool Rotation of Sintered NdFeB Magnet." Key Engineering Materials 359-360 (November 2007): 420–24. http://dx.doi.org/10.4028/www.scientific.net/kem.359-360.420.

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A new kind of ultrasonic machining method named ultrasonic machining aided tool rotation is proposed for sintered NdFeB permanent magnet. In the process abrasive slurry enters the machining area through holes in the rotary tool which can assure the grains easily enter the machining surface slurry. Its machining mechanisms are studied and material removal model is developed. Experimental research was carried out on self-made equipment. Experimental results were accordance with the developed model. It is proved that this new kind of ultrasonic machining technology is suitable to machine deep hole for sintered NdFeB material.
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Dissertations / Theses on the topic "Permanent magnet research area"

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Camacho, Silva Leandro. "Modeling and Design of the Electric Drivetrain for the 2013 Research Concept Vehicle." Thesis, KTH, Elektrisk energiomvandling, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133353.

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The research for electric vehicles has been growing during last years and the development of electric drive trains can be considered a main challenge. This thesis presents the electric drive train of the research concept vehicle (RCV) 2013, with particular focus on electric machines, motor controllers, and the communication system. In the first part of this thesis, the electric drive train configuration and components are described. In-wheel motors are proposed which is a permanent magnet synchronous machine (PMSM). This technology allows the use of autonomous corner modules (ACM) increasing the quality and safety of the system. Each of the four in-wheel motors has a controller enabling the use of torque or speed control mode. Furthermore, a dSPACE unit provides the total control of the system by CAN bus. Additionally, the dSPACE ControlDesk interface used to control the drive system is presented. In the second part, the heat sink of the AC Drive is investigated by measurements and analytical calculations. Furthermore, the motor temperature at different loads is also presented and discussed. Finally, the efficiency of an in-wheel motor (PRA 230) is studied. Also the efficiency of the motor controller is estimated and discussed.
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Gaeta, Alberto. "Fault Tolerant Sensorless Permanent Magnet Synchronous Motor Drives." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/996.

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High cost and complexity of fault tolerant motor drives has relegated them to mission critical, no-compromise applications. Heeding to this target application, past research efforts have been mainly focused on developing highly redundant, multiphase fault-tolerant solutions able to assure a very high fault tolerance level. However, many other applications would benefit from the availability of solutions ensuring an acceptable level of fault tolerance. The present work shows that, if tolerance is limited to few common faults and a reasonable performance penalty after a fault is accepted, a three-phase, voltage source inverter-fed, sensorless motor drive can be made fault tolerant by acting mainly on the control strategy, thus keeping to a minimum the required hardware modifications and additions. After an initial classification of the possible faults which may affect three-phase VSI-fed drives, a fault detection and identification technique for converter faults is analyzed, able to ensure reduced response times. Therefore, modifications to a sensorless rotor position estimation technique are proposed in order to make a sensorless drive as fault tolerant as their sensored counterparts. Succesively, considering a PMSM motor with star center accessibility, two-phase sensorless operation is extensively studied and a new model is introduced maintaining the same control performance of a standard qd reference frame model. The new model is used for vector control of the machine either in sensored and sensorless conditions to confirm that advanced control of two-phase sensorless operation is the only post-fault strategy allowing the elimination of any redundant hardware.
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Pappu, Gita. "Design of a permanent magnet motor and a drive for cranking purposes." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/43296.

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The development of Magnaquench in 1985 by the Delco-Remy laboratories, increased the research of applications of permanent magnets for use in automobiles. However the application of permanent magnet machines for cranking purposes has not been investigated much. Difficult operating conditions, like, a maximum current density of 35A/mm², and the ability to withstand demagnetizing armature currents up to 250% of the stall current require a new design approach to be developed. Commutation in the permanent magnet machine is obtained by a three phase full wave inverter. The machine - inverter model was simulated by a standard method (SPICE), and an second analytical method we developed. A permanent magnet brushless motor and a drive for cranking purposes is designed and simulated as a part of this thesis.
Master of Science
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Gangla, Vineeta. "Analytical methods for electromechanical forces and torque computation in brushless permanent magnet machines." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-12052009-020038/.

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Bedford, Adam. "Strength in flexibility : research into innovative flexible bearing designs for wave convertor permanent magnet generators." Thesis, Lancaster University, 2011. http://clok.uclan.ac.uk/4192/.

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Originally this research was to investigate the use of hydrostatic bearings in large linear machines, such as linear generators, and determine their viability in a power generation context. It quickly became clear that it was possible to make hydro-static bearings viable, however the methods employed to do so gave rise to new possibilities which altered the scope of the research. The overall aim of the research has become to look at flexible construction, using modular generation units, as a means of creating more reliable and cost effective generators. The methods employed to do this involved modularising the generator's structure. Each module then acts as a generator in its own right transferring its power to the parent machine. The potential for each module design was assessed based on its losses, due to the bearings, and its economic potential, such as how it impacted the operation and maintenance costs or transport costs and consideration of how each design affected the power density of the parent machine. The basic structural analysis showed that, of the arrangements tried, there was a distinct advantage to restricting the number of bearings because it reduces energy losses. This is particularly true of designs that take advantage of the MMA concepts. The magnitude of the forces within the generators, during operation, lead to the creation 2-stage bearing and MMA concepts. The key reasons for them being to reducing dynamic forces within the generator and increase tolerance to design flaws and damage. Reducing the dynamic forces reduces losses in all types of bearings improving overall efficiency. Not all the concepts present in this document show commercial promise, however from the basic principles used to understand their working, there are some whose potential is clear. In general the modules have reduced the weight necessary to operate a successful generator and reduced the bearing losses no matter the type of bearing being used. Predicted force reductions mean that less strength critical and more cost effective materials can be used in the machines construction. Given that the original scope of the research was to assess a single type of bearing it has come a long way to incorporate construction methods that will reduce operation and transport costs, as well as being more efficient on some of the construction materials. The final module designs show great promise to increase the power density of generators whilst making them easy to maintain. Although hydrostatic bearings provide excellent lubrication the basic analysis performed herein shows that their energy consumption exceeds the energy loss of normal roller bearings reducing overall generator efficiency. The modular constructions presented may not provide a great jump in efficiency over previous designs however they do show a way to simplify operation and maintenance costs improving overall commercial viability. All 3D/CAD models contained herein were created by the author for this work unless otherwise stated/referenced.
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Duffy, Michael James. "Small wind turbines mounted to existing structures." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34765.

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Small wind turbines, and especially urban-mounted turbines which require no dedicated pole, have garnered great public enthusiasm in recent years. This enthusiasm has fueled widespread growth among energy conservationists, and estimates predict that the power produced nationally by small wind will increase thirty-fold by 2013. Unfortunately, most of the wind resources currently available have been designed for larger, rural-mounted turbines; thus, they are not well suited for this nascent market. A consequence of this is that many potential urban small wind turbine owners over-predict their local wind resource, which is both costly and inefficient. According to a recent study published by Encraft Ltd., small wind turbines mounted to buildings far underperformed their rural pole mounted counterparts. As a proposed solution to this problem, this project introduces the concept of a Web-based Wind Assessment System (WWAS). This system combines all the necessary resources for potential urban small wind turbine customers into a single web-based tool. The system also presents the concept of a modular wind measurement system, which couples with the WWAS to provide real-time wind data measurements. The benefits of the system include its ease of use, flexibility of installation, data accessibility from any web browser, and expert advice. The WWAS prevents potential clients from investing in a system that may not be viable for their location. In addition, a small wind turbine is designed in this project, which has a unique modular mounting system, allowing the same baseline wind turbine to attach to various structures using interchangeable mounting hardware. This includes such accessible urban structures as street lights, building corners, flag poles, and building walls, among others. This design also utilizes concepts that address some of the challenges associated with mounting small wind turbines to existing urban structures. These concepts include: swept tip blades and lower RPM to reduce noise; vibration suppression using rubber shims; a netted duct to protect wildlife; and a direct-drive permanent magnet generator to ensure low starting torque. Finally, the cost of this system is calculated using off-the-shelf components, which minimize testing and certification expense. This small wind turbine system is designed to be grid-connected, has a 6 foot diameter rotor, and is rated at 1 kW. This design features a unique modular interchangeable mounting system. The cost for this complete system is estimated to be $2,050. If a users' site has an average wind speed of 14 mph (6.5 m/s), this system will generate a return on investment in 8.5 years, leaving over 10 years of profit. The profit for this system, at this sample average wind speed, yields over $4,000 during its 20-year design life, which is a two-fold return on investment. This project has implications for various stakeholders in the small wind turbine market, including designers, engineers, manufacturers, and potential customers. Equally important is its potential role in guiding our future national--even global--energy agenda.
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Silva, Leandro Camacho. "Modeling and Design of the Electric Drivetrain for the 2013 Research Concept Vehicle." Master's thesis, 2013. http://hdl.handle.net/10316/40436.

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Albino, Martin, Andrea Caneschi, Claudio Sangregorio, Claudia Innocenti, Michele Petrecca, Alessandro Lascialfari, Elvira Fantechi, and Francesco Pineider. "Nanometric spinel ferrites: a versatile platform for biomedical and energy applications." Doctoral thesis, 2020. http://hdl.handle.net/2158/1194934.

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Huang, Po-Wei, and 黃柏維. "The Research of Line-Start Permanent Magnet Motors." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/91036825653201280342.

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碩士
國立成功大學
機械工程學系碩博士班
96
Induction motors (IMs) have been wildly applied in the industry because of the low manufacturing cost and the simple structure. However, the existence of slip and rotor copper losses will lower the motor efficiency. The structure of Line Start Permanent Magnet Motors (LSPMMs) is similar to IMs, with the permanent magnets inserted in the rotor. Under the synchronous operation, it can provide higher efficiency and be the attractive alternative to the IMs to save electric energy. In the thesis, the equations of cage torque and braking torque are derived to realize the influence of the design parameters, such as input voltage and magnet remanence, at the transient and steady state based on finite element analysis (FEA). In addition, synchronization and loading capability of different rotor designs are simulated to compare the characteristics. Finally, the design with the best performance is introduced to a produced 1HP IM and the improved efficiency is calculated by FEA method. Overall, this thesis provides levant benchmark for LSPMMs design.
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Chen, Han-Syuan, and 陳漢軒. "Research on A Multi-Driven Brushless Permanent Magnet Motor." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/77483830477190750884.

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碩士
國立雲林科技大學
機械工程系碩士班
101
This thesis investigates the characteristics of a blushless permanent magnet motor with a novel multi-driving circuit. An experimental prototype is built by rewinding the stator of a commercial motor. Each of the three-phase winding is cut into 3 overlapping sections having 200, 100, and 50 turns of coil, respectively. By using three independent drivers with different combination of duty cycles, the motor can be switched to several different characteristics. The reachable range of speed and torque is significantly widened with this design. An integrated circuit which contains three MOSFET half bridges is used to drive the motor. For the multi-driven motor, three pieces of the driver IC’s are needed. T-N curves of the motor with various combinations of duty cycles are constructed. Efficiency of the multi-driven motor is measured by use of pre-charged super capacitors as the power source. It is found that optimal efficiency can be obtained by setting the ratio of duty cycles for the three drivers to be 4:2:1. Comparisons are also made with a conventional motor.
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Books on the topic "Permanent magnet research area"

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Kirsch, F. William. Waste minimization assessment for a manufacturer of permanent-magnet DC electric motors. Cincinnati, OH: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1992.

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Kirsch, F. William. Waste minimization assessment for a manufacturer of permanent-magnet DC electric motors. Cincinnati, OH: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1992.

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3

Smirnov, Aleksandr. Electric drive with contactless synchronous motors. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1192105.

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Contactless synchronous machines are considered, classification, description of structures, construction of analytical and numerical models for research calculations and design of inductor motors with electromagnetic excitation and with excitation from permanent magnets are given. Examples of design and research calculations of the operation of a synchronous drive of automation systems by means of a computational experiment are given.
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Colo.) Advanced Drivetrain Workshop (2010 Broomfield. Advanced Wind Turbine Drivetrain Concepts: Workshop report, June 29-30, 2010. Golden, Colo.]: U.S. Dept. of Energy, Energy Efficiency & Renewable Energy, Wind and Water Program, 2010.

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Rai, Dibya Prakash, ed. Advanced Materials and Nano Systems: Theory and Experiment - Part 2. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/97898150499611220201.

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The discovery of new materials and the manipulation of their exotic properties for device fabrication is crucial for advancing technology. Nanoscience, and the creation of nanomaterials have taken materials science and electronics to new heights for the benefit of mankind. Advanced Materials and Nanosystems: Theory and Experiment covers several topics of nanoscience research. The compiled chapters aim to update students, teachers, and scientists by highlighting modern developments in materials science theory and experiments. The significant role of new materials in future technology is also demonstrated. The book serves as a reference for curriculum development in technical institutions and research programs in the field of physics, chemistry and applied areas of science like materials science, chemical engineering and electronics. This part covers 12 topics in these areas: 1. Recent advancements in nanotechnology: a human health Perspective 2. An exploratory study on characteristics of SWIRL of AlGaAs/GaAs in advanced bio based nanotechnological systems 3. Electronic structure of the half-Heusler ScAuSn, LuAuSn and their superlattice 4. Recent trends in nanosystems 5. Improvement of performance of single and multicrystalline silicon solar cell using low-temperature surface passivation layer and antireflection coating 6. Advanced materials and nanosystems 7. Effect of nanostructure-materials on optical properties of some rare earth ions doped in silica matrix 8. Nd2Fe14B and SmCO5: a permanent magnet for magnetic data storage and data transfer technology 9. Visible light induced photocatalytic activity of MWCNTS decorated sulfide based nano photocatalysts 10. Organic solar cells 11. Neodymium doped lithium borosilicate glasses 12. Comprehensive quantum mechanical study of structural features, reactivity, molecular properties and wave function-based characteristics of capmatinib
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Henning, C. Randall. New Facilities and Institutions. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198801801.003.0009.

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As the crisis evolved, euro-area governments first constructed two transitional financial facilities and then created a permanent fund. This chapter reviews the creation of the financial facilities of the euro area culminating in the establishment of the European Stability Mechanism. The ESM treaty contains a strong presumption, but not a strict legal requirement, that the International Monetary Fund (IMF) will also be involved in assistance to a member state. As a political matter, the Fund’s involvement is strongly favored in creditor countries of the euro area. The emergence of the ESM, a new institutional player in crisis finance, prompted a reconsideration of the institutional arrangements under which crisis programs are designed. The chapter reviews proposals from research institutes and the European Parliament to combine resources of the European Commission and the ESM into a European Monetary Fund.
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De Cuyper, Nele, Rita Fontinha, and Hans De Witte. Nontraditional Employment: The Careers of Temporary Workers. Edited by Ute-Christine Klehe and Edwin van Hooft. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780199764921.013.016.

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This chapter focuses upon the careers of temporary workers. Temporary employment for many workers presents a route to permanent employment. Other workers, however, get trapped into temporary employment or cycle between unstable jobs and spells of unemployment. Predictors of such transitions are multiple. We selected two broad categories, namely perceived employability from the area of career research and health and well-being from the area of occupational health and well-being research. The overall conclusion is that the association between temporary employment and both perceived employability and health and well-being is inconclusive. This suggests that there are boundary conditions that may make some temporary workers successful and others not. Risk factors include dynamics related to the dual labor market, including lower job quality, lower investments on the part of employers, and negative stereotyping of temporary workers as second-class citizens. On the positive side, many temporary workers have learned to manage their careers in the sense that they invest in training and in continuous job search.
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Lusardi, Theresa A., and Detlev Boison. Ketogenic Diet, Adenosine, Epigenetics, and Antiepileptogenesis. Edited by Detlev Boison. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190497996.003.0023.

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Epilepsy is common, affecting about 1% of the population. Conventional treatments are ineffective in about one third of patients, and current therapies do not prevent epilepsy or its progression. For individuals with drug-refractory epilepsy the ketogenic diet (KD) can provide seizure relief in approximately fifty percent of patients, with complete and permanent remission in some cases, suggesting possible antiepileptogenic effects of the diet. Whereas mechanisms underlying antiseizure effects of KD have been identified, mechanistic links between KD therapy and antiepileptogenesis constitute a novel area of research. An adenosine receptor-mediated role of KD therapy in seizure suppression is well established, and recent evidence demonstrates that the KD regulates adenosine homeostasis in the brain. Adenosine in turn has previously unappreciated epigenetic functions as a regulator of DNA methylation. This chapter discusses recent evidence that KD influences the epigenome through modulation of adenosine metabolism as a plausible antiepileptogenic mechanism of the diet.
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Biel Portero, Israel, Andrea Carolina Casanova Mejía, Amanda Janneth Riascos Mora, Alba Lucy Ortega Salas, Luis Andrés Salas Zambrano, Franco Andrés Montenegro Coral, Julie Andrea Benavides Melo, et al. Challenges and alternatives towards peacebuilding. Edited by Ángela Marcela Castillo Burbano and Claudia Andrea Guerrero Martínez. Ediciones Universidad Cooperativa de Colombia, 2020. http://dx.doi.org/10.16925/9789587602388.

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Rural development and peacebuilding in Colombia have been highly prioritized by higher education institutions since the signing of the Peace Agreement between the National Government and the FARC-EP. This has resulted in the need to further analyze rural strategies that contribute towards a better life for the population of territories where armed conflict is coming to an end, whilst understanding the pressing uncertainty that this process implies; on the one hand, for the urgency of generating rapid and concrete responses to social justice and equity, and on the other, because fulfilling the agreement guarantees scenarios of non-repetition of the war in the country. These were some of the reflections that motivated the research project “Rural development alternatives for peacebuilding: educational strategies to strengthen the ability of producers and young people that contribute to the coffee production chain in the municipalities of Leiva, Policarpa and Los Andes of the department of Narino, with international impact in the province of Carchi-Ecuador”. This work is presented as an investigative result that contains the analysis of theoretical and territorial Dynamic contributions regarding the construction of peace, education and the economy for rural development. The book is made up of three parts: Part 1 gathers sociological, legal and demographic works on the challenges of peacebuilding with the national and departmental context of Narino, and looks at human rights from the perspective of population health and quality of life. Part 2 presents texts on the dynamics of rural education in Colombia; national challenges and lessons learned based on case studies of specific forms of education. Part 3 presents economic analyses regarding the models that are behind the conception of rural development and the productive and institutional dynamics of the local sphere for the generation of employment and income. All three parts are relevant at both the national level and also the more specific area of the department of Narino and within this, the Cordillera region. This area, historically affected by the armed conflict, despite experiencing continuing uncertainty regarding the resurgence of violence and the increase in illegal crops, has also reignited hope with regards to finding solutions to the problems seen in the countryside; through educational, community and productive experiments. Although there are contradictory dynamics, the authors agree that the rural territory is a scene of permanent and collective construction, mediated by constant social struggles and power disputes with the State. It is therefore necessary to rethink the strategies for implementing the Peace Agreement in this region, with participatory scenarios being provided to include the rationale specific to rurality, such as: justice and reconciliation, social pedagogy, pertinence of study and student retention rates, social and solidarity economy, productive associativity, demographic conditions and health; including the physical, mental and social wellbeing of rural workers. With this work, we hope to reflect collectively with academics and human rights activists, spurring an increase in studies of rural areas and those analyses of community and innovative strategies that reinforce the road towards the construction of a lasting peace with social justice in Colombia.
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Book chapters on the topic "Permanent magnet research area"

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Li, Li, Dong Wang, Zong Wei Niu, and Zhi Yong Li. "EDM with USM Combination Process of Sintered NdFeB Permanent Magnet." In Advanced Materials Research, 139–43. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-461-8.139.

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Dai, Xiwen, Zheng Liu, and Ninghui Wang. "A Magnetic Field Analysis Research of Permanent Magnet Motor." In Lecture Notes in Electrical Engineering, 29–39. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3171-0_3.

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Jo, S. R., S. L. Ko, and Yuri M. Baron. "Effective Deburring of the Burr at Intersecting Hole by Permanent Magnet Inductor." In Advanced Materials Research, 29–38. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-461-8.29.

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Zhu, Jun, Xu Dong Wang, Bao Yu Xu, and Hai Chao Feng. "The Vector Control Research of Permanent Magnet Linear Synchronous Motor." In Electrical, Information Engineering and Mechatronics 2011, 1873–80. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2467-2_222.

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Zhao, Zhiping, Xinyong Li, Zhenyang Feng, and Chao Wang. "Research on Structural Parameters of Mono-tube Permanent Magnet Speed Governor Based on Magnet Simulation." In Lecture Notes in Electrical Engineering, 735–42. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6318-2_92.

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Hung, Nguyen Manh, Do Manh Cuong, Do Nguyen Hung, and Dao Huy Du. "Design Axial Flux Permanent Magnet Machine for In-Wheel of Electric Vehicle." In Advances in Engineering Research and Application, 220–28. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-37497-6_26.

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Xiang, Quansuo, Qiuling Deng, Xia Long, Mengqing Ke, and Qun Zhang. "Research on Weakening Cogging Torque of Permanent Magnet Synchronous Wind Generator." In Proceedings of the 9th International Conference on Computer Engineering and Networks, 215–23. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3753-0_21.

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Hao, Linzhao, Xia Liu, Chuan Jiang, Qinghua Zheng, and Wen Jing Li. "Research on Terminal Overvoltage Protection of Direct Drive Permanent Magnet Wind Turbine." In Emerging Trends in Intelligent and Interactive Systems and Applications, 537–44. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63784-2_67.

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Ma, Tongbing. "Research on the Method of Lean Quality Improvement for Permanent Magnet Motor." In Advances in Intelligent Systems and Computing, 739–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27711-5_99.

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Yao, Mingqing, Hongwei Ma, and Jingpan Ren. "Research on Speed Control Method of Twelve-phase Permanent Magnet Synchronous Motor." In The Proceedings of the 9th Frontier Academic Forum of Electrical Engineering, 361–69. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6609-1_32.

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Conference papers on the topic "Permanent magnet research area"

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Song, Pan, Xiaoying Tang, ShaoJun Wang, Bin Ren, Yantian Zuo, and Jielu Wang. "A Study on the Magnetic Distribution of Nd-Fe-B Permanent Magnets in Pipeline in Line Inspection Tool." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84529.

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The pressure pipeline in line inspection technology is the most effective nondestructive testing method to detect the quality of buried oil and gas pipelines at present. In line inspection tool usually uses magnetic flux leakage (MFL) technology to detect the change of leakage magnetic field to detect pipeline defects. Permanent magnets magnetize the wall of the pipeline as an excitation. During the detection process, the magnetic field performance of permanent magnets is required to be high. At the same time, the magnetic performance of the permanent magnet in the magnetic cleaning pipe also determine the cleaning effect inside the pipeline. In this paper, the magnetic distribution of permanent magnets is studied and the Nd-Fe-B permanent magnets with the best magnetic properties are taken as the objects. The finite element simulation is used to optimize the shape of the permanent magnets with better magnetic distribution, and the magnetic intensity factors of the preferred cylindrical permanent magnets are analyzed. In addition, three experiments of the influence of temperature, the influence of the ferromagnetic combination, and the influence of the environment medium are conducted. As a result, the relationship between the magnetic intensity of the Nd-Fe-B permanent magnets and the factors is obtained. The conclusion is of great significance to the design and research of permanent magnetic circuit in line inspection magnetization device.
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Vipin, A. M., and Saly George. "Hardware implementation of space vector PWM control of Permanent Magnet Synchronous Motor." In 2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD). IEEE, 2014. http://dx.doi.org/10.1109/aicera.2014.6908193.

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Agrawal, Jyoti, and Sanjay Bodkhe. "Functional modeling and simulation of inverter fed permanent magnet synchronous motor drive." In 2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD). IEEE, 2014. http://dx.doi.org/10.1109/aicera.2014.6908206.

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Sudhakaran, Aryamol, and T. S. Angel. "Permanent magnet synchronous wind generator for microgrid dynamic performance improvement." In 2013 Annual International Conference on Emerging Research Areas (AICERA) - 2013 International Conference on Microelectronics, Communications and Renewable Energy (ICMiCR). IEEE, 2013. http://dx.doi.org/10.1109/aicera-icmicr.2013.6575964.

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Yao, Ming Hui, Wei Xia, Wei Zhang, and Jian Yu Jiao. "Nonlinear Dynamics of a Special Piezoelectric Energy Harvester With a Special Bistable Piezoelectric Cantilever Beam." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-7967.

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This paper presents a special piezoelectric energy harvester system which is obtained by separating the end of the upper piezoelectric layer of the traditional piezoelectric cantilever beam from its basic layer. A mass I is located at the end of the separated upper piezoelectric layer (SUPL), a mass II and a permanent magnet I are located at the end of the separated lower piezoelectric beam (SLPB) and a permanent magnet II is added in the opposite position of the permanent magnet I and they face each other with same polarities. A nonlinear magnetic force which can broaden the frequency bandwidth of the system is generated mutually on the two permanent magnets. Studies find that this special piezoelectric energy harvester has extremely high energy capture efficiency. In order to further explore the reason of high efficiency, experimental research on its dynamic behavior is carried out. The experimental results show that the vibrations of the SUPL and the SLPB are relatively simple. The dynamic behaviors of the SUPL, the SLPB and the unseparated part are different. The unseparated part of the piezoelectric shows relatively complex nonlinear phenomenon due to the interaction of nonlinear magnetic force and the collision. With the increase of the external excitation frequency, period doubling motion and almost periodic motion appear alternately.
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Anjana, M. P., K. S. Shinoy, and Jeena Joy. "Comparative analysis of surface mounted and tangentially magnetized permanent magnet BLDC motor using finite element method." In 2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD). IEEE, 2014. http://dx.doi.org/10.1109/aicera.2014.6908285.

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Slawinski, Piotr R., Collin T. Garcia, Addisu Z. Taddese, Keith L. Obstein, and Pietro Valdastri. "Towards Recovering a Lost Degree of Freedom in Magnet-Driven Robotic Capsule Endoscopy." In 2017 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dmd2017-3391.

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Flexible endoscopy, a procedure during which an operator pushes a semi-rigid endoscope through a patient’s gastrointestinal tract, has been the gold-standard screening method for colon cancer screening (colonoscopy) for over 50 years. Owing to the large amounts of tissue stress that result from the need for transmitting a force to the tip of the endoscope while the device wraps through the bowel, implementing a front-actuated endoscopy system has been a popular area of research [1]. The pursuit of such a concept was accelerated by the advent of ingestible capsule endoscopes, which, since then, have been augmented by researchers to include therapeutic capabilities, modalities for maneuverability, amongst other diagnostic functions [2]. One of the more common approaches investigated has been the use of magnetic fields to apply forces and torques to steer the tip of an endoscope [3]. Recent efforts in magnetic actuation have resulted in the use of robot manipulators with permanent magnets at their end effectors that are used to manipulate endoscopes with embedded permanent magnets. Recently, we implemented closed loop control of a tethered magnetic capsule by using real-time magnetic localization and the linearization of a magnetic wrench applied to the capsule by the actuating magnet [4]. This control was implemented in 2 degrees-of-freedom (DoF) in position (in the horizontal plane) and 2 DoF in orientation (panning and tilting). One DoF in position is lost owing to the tethered capsule being actuated in air and thus lacking a restoring force to counter the high field gradient. The 3rd orientation DoF is lost owing to the axial symmetry of the permanent magnet in the capsule; this prevents the application of torque in the axial direction and thus controlled roll and introduces a singularity in the capsule’s actuation. Although another dipole could be used to eliminate this singularity, this would complicate both the actuation and localization methods. In this manuscript, we consider the consequences of the embedded magnet (EM) being radially offset from the center of the capsule while being manipulated by an external actuating magnet (AM). We have developed a tethered capsule endoscope that contains a cylindrical EM (11.11 mm in length and diameter) with a residual flux density of 1.48 T that is offset by 1.85 mm from the center of the capsule; a distance that is less than 10% of the capsule diameter. Our investigation into the topic results from repeated observation of the capsule’s preference to align such that the internal magnet is closest to the actuating magnet (AM). The AM is a cylindrical magnet (101.6 mm in length and diameter) with a residual flux density of 1.48 T that is mounted at the end effector of a 6 DoF manipulator, as seen in Figure 1. In this manuscript, we evaluate the torqueing effects of the presence of this magnet offset with the goal of determining whether the torque effect is negligible, or impacts capsule motion and thus can potentially be used for the benefit of endoscope manipulation. A concept schematic of this effect is shown in Figure 2. A discussion of how to use this torque is beyond the scope of this manuscript. To the authors’ knowledge, the use of such concept in permanent-magnet based control has not been investigated.
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Zhang, Lijun, Jie Xu, and Dejian Meng. "Research on Electromagnetic Vibration and Noise Characteristics of Double-rotor Permanent Magnet Synchronous In-wheel Motor." In FISITA World Congress 2021. FISITA, 2021. http://dx.doi.org/10.46720/f2020-adm-030.

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This paper presents a method based on the finite element simulation, the electromagnetic field, electromagnetic force, electromagnetic vibration and electromagnetic noise characteristics of a double-rotor permanent magnet synchronous in-wheel motor under multiple operating conditions are systematically studied. On the integration of previous methods, a program of multi-physics modeling and analysis of electromagnetic vibration and noise of motor is set up. Firstly, a new electromagnetic structure design of double-rotor permanent magnet synchronous in-wheel motor is proposed. Based on Maxwell stress equation, the analytical model of the radial electromagnetic force of the motor is established. The spatial domain, time domain and frequency domain analysis of the internal and external electromagnetic force and torque ripple of the double-rotor permanent magnet synchronous in-wheel motor are carried out by means of finite element simulation. Analysis shows that the radial electromagnetic force before the 5th order is mainly influential, tangential electromagnetic force before the 4th order is mainly influential. With the increasing of order, the amplitude is gradually reduced. The amplitude of the first order is the highest. According to the different modeling methods of stator windings, four finite element models in 3D structural field are designed for the double-rotor permanent magnet synchronous in-wheel motor. Then, the effects of quality and stiffness of the effective length and end of stator windings on the stator modal frequency are summarized and compared. The results show that the effect of winding mass and stiffness on the overall modal frequency of the stator is nearly canceled. After that, the 3D structural field model of the double-rotor permanent magnet synchronous in-wheel motor is used to simulate the transient dynamics under radial concentrated force loading. Based on the simulation results, the inner and outer lateral deformation of stator is analyzed in time domain and frequency domain. Finally, the harmonic response analysis of 3D structural field model of the double-rotor permanent magnet synchronous in-wheel motor is proposed, and the 3D sound field boundary element model of electromagnetic noise is established. The acoustic boundary element analysis under multiple operating conditions is carried out, including sound pressure analysis of stator surface, sound pressure analysis of field point and analysis of sound pressure frequency response characteristics at different field points. The results show that the electromagnetic noise of motor is more sensitive to the high frequency excitation, and the sensitivity of the electromagnetic noise in the radial position is significantly larger than that of the axial position. The analysis process proposed in this paper can provide support for the prediction, optimization and analysis of influencing factors of electromagnetic vibration and noise during the period of motor design.
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Li, Changhong, Dangwei Bian, Chaobo Chen, and Song Gao. "Research of Permanent Magnet Synchronous Motor Sensorless Control Based on Fractional Order PLL." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67070.

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For those surface mounted permanent magnet synchronous motors (PMSM), a fractional order phase lock loop (FO-PLL) sensorless control method is proposed. On the basis of PMSM model in stationary coordinate, a rotor flux linkage observer is constructed. By designing the modified integrator and introducing the high pass filter, output saturation distortion or numeric overflow caused by integrator zero drift are solved. The observing results have no DC component. Moreover, a fractional order PLL is designed to estimate the PMSM rotor angle and speed. Parameters of FO-PLL controller are tuned and optimized via ITAE criterion. System indiscrimination degree is improved effectively. By using Oustaloup recursive filter, high order integer order approximation to fractional order integrator is realized. Last, the effectiveness and engineering application of the proposed method are verified on a MATLAB based PMSM control simulation platform.
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Li, Yong, Joseph McManus, and Howard Thompson. "Cost-Effective and Environmentally Sustainable Permanent Magnet Motor for Artificial Lift." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210208-ms.

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Abstract The challenge of climate change and the imperative of moving to a low carbon economy has intensified and added to traditional objectives of affordable, safe, and clean energy in oil and gas production. Recycling parts from artificial lift equipment has been an industry-standard practice for decades. Equipment component reclaim has been a way to deliver high-quality, cost-effective products to our customers, especially in tough market times. It will be a critical best practice to reduce carbon emissions and enhance environmental sustainability. With customer cooperation, service companies develop procedures to re-use the most significant components of an Electrical Submersible Pump (ESP) system. These include the pump, cable, seal chamber section, and motor. The motor stator, bearings, and rotors are a high percentage of reclaimable parts in an ESP system. Reclaiming the induction motor (IM) rotors has been standard practice for decades. However, with the advent of permanent magnet motors (PMM) and the change in rotor construction, the current process does not apply. The driving force for PMM application is to improve energy efficiency and lower cradle to grave carbon emissions. We could not fully realize the vision of environmental sustainability and reduced carbon footprint if PMM rotors were not part of the reclaim process. Therefore, recycling the PMM rotors strengthens the justification for replacing IMs with PMMs, especially given that the value of magnetic material is highly variable and has doubled in the past year. The PMM rotors from a recovered motor may suffer from de-magnetization or be contaminated with production fluids or metal debris. Like IM rotors, the most effective method to remove contaminants from the PM rotor is to bake at high temperatures for a period. However, baking the PMM rotor magnets at elevated temperatures will be at least partially de-magnetized during the process and result in the PMM rotors no longer meeting performance specifications. This paper will present innovative technology and apparatus to re-magnetize the de-magnetized rotors for reclaiming. The research has developed a process where, without disassembling the rotor, the magnets in the rotor are re-magnetized in-situ by a specific apparatus. Testing has proven that PMMs assembled with reclaimed rotors have the same performance-rated power and torque as those built with new rotors. On the other hand, since magnets in PMMs account for more than 50% of total carbon emission of all reclaimable parts in PMMs, factoring in mining, manufacturing, logistics, and processing of magnets that generates toxic by-products to the environment, PMM rotor recycling contributes to corporate responsibility and our overall ESG (Environmental, Social, and Governance) rating. Furthermore, reclaiming PMM rotors can enable us to build PMM more cost-effectively, gain competitiveness in the market, and keep our PMM supply chain more stabilized.
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Reports on the topic "Permanent magnet research area"

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McKeever, J. W. Radial-Gap Permanent Magnet Motor and Drive Research FY 2004. Office of Scientific and Technical Information (OSTI), February 2005. http://dx.doi.org/10.2172/885964.

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Hendershot, James R., and Keith Klontz. Scholarly Research Program Delivery Order 0011: Concept Design for a 1 MW Generator Based on a Permanent Magnet Rotor (Turbine Driven). Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada434783.

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