Academic literature on the topic 'Brushless Permanent magnet motors'

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Journal articles on the topic "Brushless Permanent magnet motors"

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Nurmalia, Alif, Widyono Hadi, and Widya Cahyadi. "Performance Test of Three-Phase Brushless Direct Current Motor Axial Flux with Differences Diameter of Neodymium Type Permanent Magnet." ELKHA 13, no. 1 (April 20, 2021): 55. http://dx.doi.org/10.26418/elkha.v13i1.41693.

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Technology that is growing rapidly and innovations that have sprung up in the electrical field today are driving the use of electricity as a source of energy to do work. Electric motor is one component that is very popular in the industrial world and households that are useful to human life. In addition to DC motors and induction motors, there are also 3 phase brushless direct current (BLDC) motors which are a type of synchronous motor where magnetic fields are produced by rotor and stator at the same frequency. The rotor is a moving part of the brushless direct current motor which is a place of permanent magnet called a pole. This paper discusses the performance of brushless direct current 3 phase axial flux motors with different diameters of neodymium type permanent magnets. Tests carried out using neodymium permanent magnets with diameters of 15mm x 2mm and 20mm x 2mm were tested without using a load and using load. The parameters used in testing motor performance include speed, torque, and motor power with a source voltage of 12V, 16V, 20V, and 24V. The test results shows that the speed value of a BLDC motor using permanent magnets with a size of 20mm x 2mm is greater than that of permanent magnets of 15mm x 2mm. The same thing applies to the value of the power produced while, for the value of torque when the motor uses a permanent magnet of 15mm x 2mm will be greater than that of a motor using a permanent magnet of 20mm x 2mm.
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Dąbrowski, Mirosław, and Andrzej Rudeński. "Synthesis and CAD of permanent magnet DC brushless motors." Archives of Electrical Engineering 59, no. 1-2 (September 1, 2010): 87–98. http://dx.doi.org/10.2478/s10171-010-0007-y.

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Synthesis and CAD of permanent magnet DC brushless motorsThe paper presents an algorithm and software for the optimal design of permanent magnet brushless DC motors. Such motors are powered by DC voltage sources via semiconductor switches connected to the motor phase belts. The software is adjusted to the design of motors with NdFeB high energy density magnets. An attention has been given to issues important in the design of the motors, i.e., permanent magnet selection, structure of magnetic circuit, and armature windings. Particularly, precision of calculation of the permanent magnet operating point, visualization of selection process of the winding belts, and magnetic circuit dimensioning have been investigated. The authors have been trying to make the equations more specific and accurate than those presented in the literature. The user software interface allows changes in the magnetic circuit dimensions, and in the winding parameters. It is possible to examine simultaneously the influence of these changes on the calculation results. The software operates both with standard and inverted (outer rotor) motor structure. To perform optimization, a non-deterministic method based on the evolution strategy (μ+λ) - ES has been used.
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Kaňuch, Ján, and Želmíra Ferková. "Design and simulation of disk stepper motor with permanent magnets." Archives of Electrical Engineering 62, no. 2 (June 1, 2013): 281–88. http://dx.doi.org/10.2478/aee-2013-0022.

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Abstract In this paper the design and the magneto-static simulation of axial-flux permanent- magnet stepper motor with the disc type rotor is presented. Disk motors are particularly suitable for electrical vehicles, robots, valve control, pumps, centrifuges, fans, machine tools and manufacturing. The brushless machine with axial flux and permanent magnets, also called the disc-type machine, is an interesting alternative to its cylindrical radial flux counterpart due to the disk shape, compact construction and high torque density. This paper describes a design of four phase microstepping motor with the disc type rotor. The FEM modeling and the 3D magneto-static simulation of the disk stepper motor with permanent magnets is being subject of the article, too. Disc rotor type permanent magnet stepper motor for high torque to inertia ratio is ideal for robotics and CNC machines.
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Low, T. S., M. A. Jabbar, and M. A. Rahman. "Permanent-magnet motors for brushless operation." IEEE Transactions on Industry Applications 26, no. 1 (1990): 124–29. http://dx.doi.org/10.1109/28.52683.

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Ede, J. D., K. Atallah, and D. Howe. "Modular permanent magnet brushless servo motors." Journal of Applied Physics 93, no. 10 (May 15, 2003): 8772–74. http://dx.doi.org/10.1063/1.1556984.

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Rahman, M. A., and P. Zhou. "Analysis of brushless permanent magnet synchronous motors." IEEE Transactions on Industrial Electronics 43, no. 2 (April 1996): 256–67. http://dx.doi.org/10.1109/41.491349.

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Kiyoumarsi, Arash. "Prediction of Torque Pulsations in Brushless Permanent-Magnet Motors Using Improved Analytical Technique." Journal of Electrical Engineering 61, no. 1 (January 1, 2010): 37–43. http://dx.doi.org/10.2478/v10187-010-0005-8.

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Prediction of Torque Pulsations in Brushless Permanent-Magnet Motors Using Improved Analytical TechniqueTorque pulsations have prominent effects on the performance of brushless permanent- magnet (PM) machines. There are different sources of torque ripples in PM motors. These torque pulsations depend on the shape of the flux density distribution in the airgap region. For predicting the open-circuit airgap field distribution in brushless PM motors, a two dimensional (2-D) analytical method, in which the direction of magnetization, either radial or parallel and the effect of the stator slot-openings are taken into account, is used. The method uses an improved 2-D permeance model. In order to evaluate the accuracy of this method, a 2-D time-stepping FEM coupled with the two motion equations is used. A 3-phase, 36-slot, 4-pole, 5 HP, brushless PM motor is modeled by two methods. In this analysis both, the radial and parallel magnetization of the brushless motor are considered. The results obtained by the analytical method are compared with those obtained by FE analysis that shows the valuable accuracy of the analytical method for performance calculations in design and optimization processes.
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Anuja, T. A., and M. Arun Noyal Doss. "Reduction of Cogging Torque in Surface Mounted Permanent Magnet Brushless DC Motor by Adapting Rotor Magnetic Displacement." Energies 14, no. 10 (May 15, 2021): 2861. http://dx.doi.org/10.3390/en14102861.

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Cogging torque is a critical dilemma in Permanent Magnet Brushless DC (PMBLDC) motors. In medium-low power PMBLDC motors, redundant vibrations and forbidding noises arise as a result of the harmonic magnetic forces created by cogging torque. This paper introduces a simple approach for minimizing cogging torque in PMBLDC motors by applying placement irregularities in rotor magnets. An angle shift in the rotor magnets in surface-mounted PMBLDC motors helps to attain magnet displacement. This displacement imparts an asymmetrical magnet structure to the rotor. Maintaining pole arc to pole pitch ratio (L/τ) of between 0.6 and 0.8, shifting angles from 1° to 8° were considered in order to analyze the effect of the angle shift on the rotor magnets. An analytical expression was also derived for finding the shifting angle with the minimum cogging torque in the PMBLDC motor by using the Virtual Work Method (VWM). The optimization of the shifting angle with minimum cogging torque was investigated using 3D Finite Element Analysis (FEA). A comparison of the simulation and analytical results of cogging torque was carried out. It was determined that the reduction of cogging torque in the analytical results showed good agreement with the FEA analysis.
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Wang, Shu Lung, Yueh Hua Wang, and Ting Yu Chueh. "Comparative Research of 240-Coil Permanent Magnetic Brushless Motor with or without Potting Compound." Applied Mechanics and Materials 664 (October 2014): 313–17. http://dx.doi.org/10.4028/www.scientific.net/amm.664.313.

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In the design and analysis of motors, the issue of heat transfer is an important subject because it is relevant to the motor’s size and life. So, this study used an experimental design with the Taguchi Method to understand performance of epoxy resin on permanent magnetic brushless motors with 240 coils. The objects used for the experiment were a permanent magnet brushless motor with a 240 coiling number and a potting compound. The experiment was conducted to explore effectiveness of potting to reduce temperature. The Taguchi Method was applied to determine the optimal sample combination to obtain maximal experimental effectiveness by minimal test frequency. The results revealed from this study were positive for potting compound to transfer heat.
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Ohnishi, Kazuo. "Cogging Torque Reduction in Permanent Magnet Brushless Motors." IEEJ Transactions on Industry Applications 122, no. 4 (2002): 338–45. http://dx.doi.org/10.1541/ieejias.122.338.

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Dissertations / Theses on the topic "Brushless Permanent magnet motors"

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Mantala, Chawanakorn. "Sensorless control of brushless permanent magnet motors." Thesis, University of Bolton, 2013. http://ubir.bolton.ac.uk/625/.

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In this thesis, a sensorless control method of permanent magnet synchronous machines (PMSMs), whose machine neutral points are accessible, for all speeds and at standstill is proposed, researched and developed. The sensorless method is called Direct Flux Control (DFC). The different voltages between a machine neutral point and an artificial neutral point are required for the DFC method. These voltages are used to extract flux linkage signals as voltage signals, which are necessary to approximate electrical rotor positions by manipulating the flux linkage signals. The DFC method is a continuous exciting method and based on an asymmetry characteristic and machine saliencies. The DFC method is validated by implementing on both software and hardware implementation. A cooperative simulation with Simplorer for the driving circuit and programming the DFC and Maxwell for doing finite element analysis with the machine design is selected as the software simulation environment. The machine model and the DFC method are validated and implemented. Moreover, the influences of different machine structures are also investigated in order to improve the quality of the measured voltages. The hardware implementation has been employed on two test benches, i.e. for small machines and for big machines. Both test benches use a TriCore PXROS microcontroller platform to implement the DFC method. There are several PMSMs, both salient poles and non-salient poles, which are used to validate the DFC method. The flux linkage signals are also analyzed. The approximation of the flux linkage signal is derived and proposed. A technique to remove the uncertainty of the calculated electrical rotor position based on the inductance characteristics has been found and implemented. The electrical rotor position estimation method has been developed based on the found flux linkage signal approximation function and analyzed by comparing with other calculation techniques. Moreover, the calculated electrical rotor position is taken into account to either assure or show the relation with the exact rotor position by testing on the hardware environment. The closed loop speed sensorless control of PMSMs with DFC is presented and executed by using the assured calculated electrical rotor position to perform the DFC capability. This thesis has been done in the Electric Machines, Drives and Power Electronics Laboratory, South Westphalia University of Applied Sciences, Soest, Germany.
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Ede, Jason David. "High-speed permanent magnet brushless DC motors." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719807.

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Martin, Benjamin C. "Geometric Design Optimization of Brushless Permanent Magnet Motors." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/MartinBC2009.pdf.

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Bentouati, Syham. "Permanent magnet brushless DC motors for low cost applications." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487427.

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Liu, Chunhua. "Design, analysis, control and application of permanent-magnet hybrid brushless machines." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42841665.

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Niu, Shuangxia. "Design, control and application of double-stator permanent magnet brushless machines." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42841677.

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Mevey, James Robert. "Sensorless field oriented control of brushless permanent magnet synchronous motors." Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1507.

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Britten, Mark David. "Torque Controlled Drive for Permanent Magnet Direct Current Brushless Motors." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/5252.

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This thesis describes the design and implementation of a simple variable speed drive (VSD) based on a brushless direct current (BLDC) machine and discrete logic circuits. A practical VSD was built, capable of operating a BLDC machine in two quadrants, motoring and regenerative braking. The intended applications are electric scooters and electric bicycles, where the recovered energy from braking extends the range of the vehicle. A conceptual four quadrant VSD, suitable for three and four wheelers requiring reverse operation, was designed and tested in simulation. Simplicity was emphasized in this design to help achieve a robust, easy to analyse system. The versatility of multi-function gate integrated circuits (ICs) made them ideal for implementing the commutation logic and keeping the system simple. The BLDC machine has sensors with a resolution of 60 ed to determine rotor position. An electronic commutator or phase switcher module interprets the position signals and produces a switching pattern. This effectively transforms the BLDC machine into a direct current (DC) brushed machine. A synchronous step down converter controls the BLDC machine current with a tolerance band scheme. This module treats the BLDC machine as if it was a DC machine. The leakage inductance of the electric machine is used as the inductive filter element. The unipolar switching scheme used ensures that current flows out of the battery only for motoring operation and into the battery only during regeneration. The current and torque are directly related in a DC brushed machine. The action of an electronic commutator or phase switcher creates that same relationship between torque and current in a BLDC machine. Torque control is achieved in the BLDC machine using a single channel current controller. The phase switcher current is monitored and used to control the duty ratio of the synchronous converter switches. Successful operation of the practical VSD was achieved in two quadrants: forwards motoring and forwards regenerating. The maximum tested power outputs were 236W in motoring mode and 158W in regenerating mode. The output torque could be smoothly controlled from a positive to a negative value. iv v Simulation of the conceptual four quadrant design was successful in all the motoring, generating and active braking zones. The required manipulation of logic signals to achieve this type of operation was done automatically while the machine was running. The resulting output torque is smoothly controlled in all of the operating zones. Commutation at certain speeds and torques are handled better by some topologies than others. Some current sensing strategies adversely affect instantaneous phase currents under certain conditions. The final design chose the method where phase currents experience no overshoot, minimizing component stress. The battery, or energy storage system, used in verifying the operation of the VSD in the practical electric bicycle was found to be the most limiting component. In regenerating mode, the low charge acceptance rate of the battery reduced the maximum retarding torque and energy recovery rate.
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Niu, Shuangxia, and 牛双霞. "Design, control and application of double-stator permanent magnet brushless machines." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841677.

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Liu, Chunhua, and 劉春華. "Design, analysis, control and application of permanent-magnet hybrid brushless machines." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841665.

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Books on the topic "Brushless Permanent magnet motors"

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Hanselman, Duane C. Brushless permanent-magnet motor design. New York: McGraw-Hill, 1994.

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Hendershot, J. R. Design of brushless permanent-magnet motors. Oxford: Oxford University Press, 1994.

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Miller, T. J. E. 1947-, ed. Design of brushless permanent-magnet motors. Hillsboro, OH: Magna Pysics Pub., 1994.

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Hendershot, J. R. Design of brushless permanent magnet motors. Hillsboro, Ohio (PO Box 78, Hillsboro 45133): Magna Physics Corp., 1991.

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Kenjō, Takashi. Permanent-magnet and brushless DC motors. Oxford: Clarendon Press, 1985.

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Kenjo, Takashi. Permanent-magnet and brushless DC motors. Oxford: Clarendon, 1985.

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Hendershot, J. R. Design of brushless permanent-magnet machines. Venice, Florida: Motor Design Books, 2010.

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Miller, T. J. E. Brushless permanent-magnet and reluctance motor drives. 2nd ed. Oxford: Clarendon, 1993.

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Brushless permanent-magnet and reluctance motor drives. Oxford: Clarendon Press, 1989.

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R, Krishnan. Permanent magnet synchronous and brushless DC motors. Boca Raton: Taylor & Francis, 2010.

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Book chapters on the topic "Brushless Permanent magnet motors"

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Gieras, Jacek F. "Permanent Magnet Brushless Motors." In Electrical Machines, 369–417. Boca Raton : CRC Press, 2017.: CRC Press, 2016. http://dx.doi.org/10.1201/9781315371429-8.

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Ramesh Babu, P., S. Ramprasath, and B. Paranthagan. "Modeling and Dynamic Simulation of Permanent Magnet Brushless DC Motor (PMBLDCM) Drives." In Mobile Communication and Power Engineering, 556–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-35864-7_86.

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Yan, Hongkui, Lei Zhou, and Lidong Liu. "Chaos Genetic Algorithm Optimization Design Based on Permanent Magnet Brushless DC Motor." In Proceedings of the 2015 International Conference on Electrical and Information Technologies for Rail Transportation, 329–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49367-0_34.

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Kaliappan, E., and C. Sharmeela. "Torque Ripple Minimization of Permanent Magnet Brushless DC Motor Using Genetic Algorithm." In Communications in Computer and Information Science, 53–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15739-4_9.

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Kumar, Raj, and Md Nishat Anwar. "Optimal Design of Permanent Magnet Brushless DC (PMBLDC) Motor Using PSO Algorithm." In Studies in Big Data, 479–90. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4412-9_33.

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Dwivedi, Ankita, S. K. Singh, and R. K. Srivastava. "Analysis of Permanent Magnet Brushless AC Motor Using Two Dimensional Fourier Transform-Parseval’s Theorem." In Theory and Applications of Applied Electromagnetics, 185–95. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17269-9_20.

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Tan, Shermaine Yvonne, Yue Cheng, and U.-Xuan Tan. "Analysis of Super High Speed Permanent Magnet Brushless Motor Noise Source and Its Attenuation." In Lecture Notes in Mechanical Engineering, 1013–24. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8049-9_63.

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Wang, Si-Ling, Bao-Wei Song, and Gui-Lin Duan. "Multi-objective Nondominated Sorting Invasive Weed Optimization Algorithm for the Permanent Magnet Brushless Direct Current Motor Design." In Advances in Intelligent Systems and Computing, 79–87. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-12286-1_9.

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Rayaguru, N. K., and S. Sekar. "Fractional Order PID Controlled PV Fed Quadratic Boost Converter TZ Source Inverter Fed Permanent Magnet Brushless Motor Drive." In Intelligent Computing and Applications, 323–35. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5566-4_29.

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Hanitsch, Rolf, and Nejila Parspour. "Exterior Permanent Magnet Motors." In Modern Electrical Drives, 79–113. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9387-8_6.

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Conference papers on the topic "Brushless Permanent magnet motors"

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Liu, T. S., and Y. C. Chung. "A Novel Brushless Permanent Magnet Motor for Electric Scooters." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20480.

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The purpose of this study is to design brushless permanent magnet DC motors for electric vehicles based on a pole-changing method. By generating a pulse when changing the number of poles, magnetization of magnets can be changed appropriately and the principle of pole-changing motors can be applied to permanent magnet machines. This kind of machine not only retains the feature of permanent magnet machines in efficiency, but also acquires wide speed range. In this study, a pole-changing method using common windings is proposed and performance of brushless permanent magnet DC pole-changing motors is investigated. According to T-N curves, the proposed brushless permanent magnet pole-changing motor yields larger starting torque and wider speed range than motors with a fixed number of poles.
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Lyshevski, S. E., and A. Menozzi. "Control of permanent-magnet brushless DC motors." In Proceedings of American Control Conference. IEEE, 2001. http://dx.doi.org/10.1109/acc.2001.946066.

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Chidambaram, Bala, and Alice M. Agogino. "Function-Costing Applied to Brushless D.C. Permanent Magnet Motors." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/dac-3764.

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Abstract Function-costing is a cost-estimation hypothesis that helps designers estimate costs from a product’s specifications. It is surmised, that for a class of products, the relationship between cost and the primary function can be captured in a mathematical relation. It proceeds on the basis that in a free market, the lowest cost of a product will emerge over time and this cost can be roughly approximated from the product’s primary performance function. In this paper, we validate the function-costing hypothesis for Brushless D.C. permanent magnet motors (BDCPMMs). The principal function of these motors is to provide torque and the peak torque is chosen as the primary performance function. From the cost-peak torque data of a family of eight BDCPMMs produced by a motor manufacturer, we obtain a regression-based cost-estimation relation based on the function-costing hypothesis. The manufacturing processes involved in the BDCPMM construction are studied. A detailed cost-estimation function — in terms of the BDCPMM design variables — is developed using the principle of similarity and the cost data from the eight motors. The costs of constructing a motor for different peak torques is then obtained from a nonlinear discrete optimization formulation (minimum cost objective), which is solved using a genetic algorithm. These costs compare well with the costs predicted by function-costing and validate the hypothesis for BDCPMMs. Finally, we investigate potential applications of function-costing to BDCPMM redesign.
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Bentouati, S. "Permanent magnet brushless dc motors for consumer products." In 9th International Conference on Electrical Machines and Drives. IEE, 1999. http://dx.doi.org/10.1049/cp:19991001.

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Ionel, D. M. "Permanent magnet brushless motors for industrial variable speed drives." In International Conference on Power Electronics Machines and Drives. IEE, 2002. http://dx.doi.org/10.1049/cp:20020193.

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Yu, Chuang, Xiaodong Zhang, Shuang Gao, and Diyun Wu. "Comparison of permanent magnet brushless motors for electric vehicles." In 2010 IEEE Vehicle Power and Propulsion Conference (VPPC). IEEE, 2010. http://dx.doi.org/10.1109/vppc.2010.5729250.

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Zhu, Z. Q. "Design and analysis of high-speed brushless permanent magnet motors." In Eighth International Conference on Electrical Machines and Drives. IEE, 1997. http://dx.doi.org/10.1049/cp:19971103.

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Boughrara, K., R. Ibtiouen, and O. Touhami. "Numerical analysis of brushless permanent magnet motors using Lagrange multiplier." In 31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005. IEEE, 2005. http://dx.doi.org/10.1109/iecon.2005.1569312.

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Lu, Yu-Chuan, Ming-Yang Cheng, Chun-Hsien Wu, Wei-Chih Chen, and Cheng-Hu Chen. "Performance analysis of Permanent Magnet Brushless Motors for mobility scooters." In ECCE Asia (ICPE 2011- ECCE Asia). IEEE, 2011. http://dx.doi.org/10.1109/icpe.2011.5944638.

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Gieras, Jacek F. "Design of permanent magnet brushless motors for high speed applications." In 2014 17th International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2014. http://dx.doi.org/10.1109/icems.2014.7013920.

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Reports on the topic "Brushless Permanent magnet motors"

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Ludois, Daniel C., and Ian Brown. Brushless and Permanent Magnet Free Wound Field Synchronous Motors for EV Traction. Office of Scientific and Technical Information (OSTI), March 2017. http://dx.doi.org/10.2172/1349258.

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Wiles, R. H. Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/886009.

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Batzel, Todd D. Sensorless Electric Drive for Permanent Magnet Synchronous Motors. Fort Belvoir, VA: Defense Technical Information Center, October 1999. http://dx.doi.org/10.21236/ada370401.

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Hsu, J. S., T. A. Burress, S. T. Lee, R. H. Wiles, C. L. Coomer, J. W. McKeever, and D. J. Adams. 16,000-rpm Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation. Office of Scientific and Technical Information (OSTI), October 2007. http://dx.doi.org/10.2172/921780.

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Hsu, John S., Timothy A. Burress, Seong T. Lee, Randy H. Wiles, Chester Coomer, John W. McKeever, and Donald J. Adams. 16,000-RPM Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation. Office of Scientific and Technical Information (OSTI), October 2007. http://dx.doi.org/10.2172/932118.

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Fricke, Brian A., and Bryan R. Becker. Permanent Magnet Synchronous Motors for Commercial Refrigeration (Final Report). Office of Scientific and Technical Information (OSTI), August 2018. http://dx.doi.org/10.2172/1561671.

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Patil, N., J. S. Lawler, and J. McKeever. Contol of Surface Mounted Permanent Magnet Motors with Special Application to Motors with Fractional-Slot Concentrated Windings. Office of Scientific and Technical Information (OSTI), July 2007. http://dx.doi.org/10.2172/921784.

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McKeever, John W., Niranjan Patil, and Jack Lawler. Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Motors with Concentrated Windings. Office of Scientific and Technical Information (OSTI), July 2007. http://dx.doi.org/10.2172/931748.

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Lawler, J. S. Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Concentrated Windings. Office of Scientific and Technical Information (OSTI), December 2005. http://dx.doi.org/10.2172/886007.

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Lawler, J. S., J. W. McKeever, M. E. Downing, R. D. Stahlhut, R. Bremmer, J. M. Shoemaker, A. K. Seksarian, B. Poore, and J. Lutz. CRADA Final Report: Application of Dual-Mode Invertor Control to Commercially Available Radial-Gap Permanent Magnet Motors - Vol. 1. Office of Scientific and Technical Information (OSTI), May 2006. http://dx.doi.org/10.2172/890028.

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