Relevant bibliographies by topics / Electrical machine design

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Electrical machine design'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 June 2024

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Journal articles on the topic "Electrical machine design"

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Müller, Samuel, David Maier, and Nejila Parspour. "Inductive Electrically Excited Synchronous Machine for Electrical Vehicles—Design, Optimization and Measurement." Energies 16, no. 4 (February 7, 2023): 1657. http://dx.doi.org/10.3390/en16041657.

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The demand for electric machines has been rising steadily for several years—mainly due to the move away from the combustion engine. Synchronous motors with rare earth permanent magnets are widely used due to their high power densities. These magnets are cost-intensive, cost-sensitive and often environmentally harmful. In addition to dispensing with permanent magnets, electrically excited synchronous machines offer the advantage of an adjustable excitation and, thus, a higher efficiency in the partial load range in field weakening operation. Field weakening operation is relevant for the application of vehicle traction drive. The challenge of this machine type is the need for an electrical power transfer system, usually achieved with slip rings. Slip rings wear out, generate dust and are limited in power density and maximum speed due to vibrations. This article addresses an electrically excited synchronous machine with a wireless power transfer onto the rotor. From the outset, the machine is designed with a wireless power transfer system for use in a medium-sized electric vehicle. As an example, the requirements are derived from the BMW’s i3. The wireless power transfer system is integrated into the hollow shaft of the rotor. Unused space is thus utilized. The overall system is optimized for high efficiency, especially for partial load at medium speed, with an operation point-depending optimization method. The results are compared with the reference permanent magnet excited machine. A prototype of the machine is built and measured on the test bench. The measured efficiency of the inductive electrically excited synchronous machine is up to 4% higher than that of the reference machine of the BMW i3.
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Sorgdrager, Albert, Rong-Jie Wang, and Andre Grobler. "Taguchi Method in Electrical Machine Design." SAIEE Africa Research Journal 108, no. 4 (December 2017): 150–64. http://dx.doi.org/10.23919/saiee.2017.8531928.

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Ivanov, N. S., S. V. Zhuravlev, V. A. Kaderov, N. A. Malevich, and Bruno Duine. "Electrical machines with HTS windings – prospective schemes, design algorithm, and specific power dependences." Superconductivity: Fundamental and Applied Research, no. 1 (December 2023): 56–64. http://dx.doi.org/10.62539/2949-5644-2023-0-1-56-64.

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The parameters calculation results for electric machines with HTS armature windings have been provided in this Article. Various machine schemes using HTS field winding, permanent magnets, tooth and annular armature windings have been considered. A design algorithm that takes into account system level requirements, analytical calculations, finite element modeling, as well as heat and mechanical calculation have been proposed. Specific power dependences for 77K and 20K machines have been found from the analytical method and optimization calculation based on it. It has been proved that the method developed allows finding specific power for various machines. Specific power dependences presented in this Article can be used for system level design.
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Naseer, Muhammad Usman, Ants Kallaste, Bilal Asad, Toomas Vaimann, and Anton Rassõlkin. "A Review on Additive Manufacturing Possibilities for Electrical Machines." Energies 14, no. 7 (March 31, 2021): 1940. http://dx.doi.org/10.3390/en14071940.

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This paper presents current research trends and prospects of utilizing additive manufacturing (AM) techniques to manufacture electrical machines. Modern-day machine applications require extraordinary performance parameters such as high power-density, integrated functionalities, improved thermal, mechanical & electromagnetic properties. AM offers a higher degree of design flexibility to achieve these performance parameters, which is impossible to realize through conventional manufacturing techniques. AM has a lot to offer in every aspect of machine fabrication, such that from size/weight reduction to the realization of complex geometric designs. However, some practical limitations of existing AM techniques restrict their utilization in large scale production industry. The introduction of three-dimensional asymmetry in machine design is an aspect that can be exploited most with the prevalent level of research in AM. In order to take one step further towards the enablement of large-scale production of AM-built electrical machines, this paper also discusses some machine types which can best utilize existing developments in the field of AM.
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Moreno, Yerai, Gaizka Almandoz, Aritz Egea, Patxi Madina, and Ana Julia Escalada. "Multi-Physics Tool for Electrical Machine Sizing." Energies 13, no. 7 (April 2, 2020): 1651. http://dx.doi.org/10.3390/en13071651.

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Society is turning to electrification to reduce air pollution, increasing electric machine demand. For industrial mass production, a detailed design of one machine is usually done first, then a design of similar machines, but different ratings are reached by geometry scaling. This design process may be highly time-consuming, so, in this paper, a new sizing method is proposed to reduce this time, maintaining accuracy. It is based on magnetic flux and thermal maps, both linked with an algorithm so that the sizing process of an electrical machine can be carried out in less than one minute. The magnetic flux maps are obtained by Finite Element Analysis (FEA) and the thermal maps are obtained by analytical models based on Lumped Parameter Circuits (LPC), applying a time-efficient procedure. The proposed methodology is validated in a real case study, sizing 10 different industrial machines. Then, the accuracy of the sizing tool is validated performing the experimental test over the 10 machines. A very good agreement is achieved between the experimental results and the performances calculated by the sizing tools, as the maximum error is around 5%.
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Ivshin, Igor Vladimirovich, Andrey Michailovich Kopylov, and Alfred Robertovich Safin. "Numerical Modeling of Dynamic Processes of the Reciprocating Reversible Electrical Machine." Applied Mechanics and Materials 792 (September 2015): 134–42. http://dx.doi.org/10.4028/www.scientific.net/amm.792.134.

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Now rotational electrical machines are used mainly for the implementation a reciprocating motion of working mechanisms and also as the electric generators powered by internal combustion engines. It is achieved by means of the kinematic transfers complicating a design and reducing the drive efficiency. The use of linear reciprocating electric machines allows to eliminate these defects. It should be noted that the most effective ones are the cylindrical designs of reciprocating electric machines with permanent magnets, whose efficiency reaches 93 – 95%. However, the rarity and lack of a mass production of this machine type and special recommendations for their design causes the need of research, directed on search of optimum constructive decisions. The article describes the types of linear electrical machines and summarizes the results of numerical modeling of dynamic characteristics for the three versions of the reciprocating cylindrical machine with permanent magnets of 10 kW with the oscillation frequency of the translator 20 Hz and the length of operating cycle of 120 mm. The most effective design parameters of linear electric machine were determined on the basis of its specific characteristics and analysis of the EMF graphics shape, appearing on the stator windings in the generator mode.
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Gao, Wei. "Electrical System of Thread Rolling Machine." Advanced Materials Research 546-547 (July 2012): 301–6. http://dx.doi.org/10.4028/www.scientific.net/amr.546-547.301.

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The thesis designs a new kind of electrical system of thread rolling machine. The design bases on the grating, microchip and has quick response, which overcomes the drawback of the electrical system basing on PLC.
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Chari, M. V. K., G. Bedrosian, J. D'Angelo, A. konrad, G. M. Cotzas, and M. R. Shah. "Electromagnetic Field Analysis for Electrical Machine Design." Progress In Electromagnetics Research 04 (1991): 159–211. http://dx.doi.org/10.2528/pier89090100.

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Belmans, R., R. Findlay, D. Verdyck, and W. Geysen. "A Modern Approach to Electrical Machine Design." Journal of Engineering Design 1, no. 2 (January 1990): 193–206. http://dx.doi.org/10.1080/09544829008901652.

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Ismagilov, Flur, Vyacheslav Vavilov, Valentina Ayguzina, and Vladimir Bekuzin. "New Method of Optimal Design of Electrical Rotating Machines." Indonesian Journal of Electrical Engineering and Computer Science 5, no. 3 (March 1, 2017): 479. http://dx.doi.org/10.11591/ijeecs.v5.i3.pp479-487.

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The article presents a new method of the optimal design of the electrical rotating machine based on genetic algorithm. The mathematical description of the proposed algorithm is developed, and the optimal design of the high-speed electrical rotating machine by proposed method is performed. A new method for optimal design allows obtaining a new electrical rotating machine which mass is lower than mass of the initial electrical rotating machine by two times; the value of the rotor active length is lower by 2.37 times and the current density is higher by 1.7 times in comparison with the initial electrical rotating machine. The losses are increased by only 25 percent (power, rotation frequency and materials of both electrical rotating machine are the same).
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Dissertations / Theses on the topic "Electrical machine design"

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Mukolera, J. "Logic programming in electrical machine design." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/47359.

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Norton, Mark B. "An object oriented approach to electrical machine design." Thesis, University of Bath, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423486.

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Wang, Rong-Jie. "Design aspects and optimisation of an axial field permanent magnet machine with an ironless stator." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53351.

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Thesis (PhDEng)--University of Stellenbosch, 2003.
ENGLISH ABSTRACT: The advent of new high energy product permanent magnet materials has opened great opportunities for novel electrical machine topologies with advantageous features such as high efficiency and high power/weight ratio. Amongst others, axial field permanent magnet (AFPM) machines with ironless stators are increasingly being used in power generation applications. Because of the absence of the core losses, a generator with this type of design can operate at a substantially high efficiency. Besides, the high compactness and disc-shaped profile make this type of machine particularly suitable for compact integrated power generation systems. Due to construction problems, the generator application of this type of machine has been limited to quite a low power range. There is a need to investigate the performance capability of this type of AFPM machine in the upper medium power level. The focus of this thesis is on the design optimisation of the air-cooled AFPM generator with an ironless stator. A design approach that directly incorporates the finite element field solution in a multi-dimensional optimisation procedure is developed and applied to the design optimisation of a 300 kW (at unity power factor) AFPM generator. To enable an overall design optimisation of the machine, different design aspects, such as the cooling capacity, the mechanical strength and eddy loss, are also studied in this research. To enable the free movement of the rotor mesh with respect to the stator mesh, the air-gap element originally proposed by Razek et. al. is derived for Cartesian coordinate systems. For minimising the large computation overhead associated with this macro element, a number of existing time-saving schemes have been utilised together with the derived Cartesian air-gap element. The developed finite element time-step model is applied to calculating the steadystate performance of the AFPM machine. Since the flux distribution in an AFPM machine is three dimensional by nature, calculating the eddy current loss by merely using a simple analytical method may be subject to a significant error. To overcome this problem, the two dimensional finite element field modelling is introduced to perform accurate field analysis. To exploit the full advantages of the twodimensional finite element modelling, a multi-layer approach is proposed, which takes into account the variation of the air-gap flux density in the conductors with regard to their relative positions in the air-gap. To account for the radial variation of the field, a multi-slice finite element modelling scheme is devised. The thermal analysis is an important aspect of the design optimisation of AFPM machines. From a design point of view, it is preferable to have a simple but effective method for cooling analysis and design, which can easily be adapted to a wide range of AFPM machines. In this thesis a thermofluid model of the AFPM machine is developed. The fluid flow model is needed for calculating the air flow rate, which is then used to find the convective heat transfer coefficients. These are important parameters in the subsequent thermal calculations. Experimental investigations have been carried out to verify each of the above-mentioned models/methods. With these models implemented, the design optimisation of an air-cooled ironless stator 300 kW (at unity power factor) AFPM generator is carried out. The performance measurements done on the fabricated prototype are compared in this thesis with predicted results. The study shows that the proposed design approach can be applied with success to optimise the design of the AFPM machine. The advantages of high power density, high efficiency, no cogging torque and good voltage regulation make this type of AFPM machine very suitable for power generator applications. The optimum steady-state performance of the AFPM machine shows that this machine with an ironless stator is an excellent candidate for high speed power generator applications, even in the upper medium power level. The good cooling capacity of this type of machine holds the promise of its being a self-cooled generator at high power ratings.
AFRIKAANSE OPSOMMING: Die uitvinding van nuwe hoë energiedigtheid permanent magneet materiale het groot geleenthede vir nuwe elektriese masjien topologië laat ontstaan met voordelige eienskappe soos hoë benuttingsgraad en hoë drywing/gewig verhouding. Onder andere word die aksiaalveld permanente magneet (AVPM) masjiene met kernlose stators toenemend gebruik vir elektriese generator toepassings. As gevolg van die afwesigheid van kernverliese kan 'n generator met hierdie tipe ontwerp teen 'n aansienlik hoë benuttingsgraad werk. Daarbenewens maak die hoë kompaktheid en skyfvorm-profiel die masjien in besonder geskik vir die ontwikkeling van kompak geïntegreerde drywing generator stelsels. As gevolg van konstruksie probleme is die toepassing van hierdie tipe masjien as generator beperk tot redelik lae drywingsgebiede. Dit is nodig om die werkverrigtingsvermoë van hierdie tipe AVPM masjien in die boonste medium drywingsgebied te ondersoek. Die fokus van hierdie tesis is op die ontwerp-optimering van 'n lugverkoelde AVPM generator met 'n kernlose stator. 'n Ontwerpsbenadering wat die eindige element veldoplossing in 'n multi-dimensionele optimeringsprosedure insluit, is ontwikkel en toegepas op die ontwerpsoptimering van 'n 300 kW (by eenheidsarbeidsfaktor) AVPM generator. Om 'n globale ontwerpsoptimering van die masjien te kan doen is verskillende ontwerpsaspekte soos die verkoelingskapasiteit, meganiese sterkte en werwelverliese ook in hierdie navorsing bestudeer. Om die vrye beweging van die rotormaas ten opsigte van die statormaas te verseker is die lugspleet-element, soos oorspronklik deur Razek et al voorgestel, afgelei vir Cartesiaanse koórdinaat stelsels. Om die lang berekeningstyd geassosieer met hierdie makro-element te minimaliseer is 'n aantal bestaande tydbesparende metodes saam met die ontwikkelde Cartesiaanse lugspleet-element gebruik. Die ontwikkelde eindige element tydstapmodel is toegepas om die bestendige werkverrigting van die AVPM masjien te bereken. Aangesien die vloedverspreiding in 'n AVPM masjien van nature drie-dimensioneel is, kan die berekening van die werwelstroomverliese tot aansienlike foute lei as eenvoudige analitiese metodes gebruik word. Om hierdie probleem te oorkom is twee-dimensionele eindige element modellering gebruik om akkurate veld-analise te doen. Om die volle voordele van die twee- dimensionele eindige element modellering te eksploiteer is 'n multi-laag benadering voorgestel wat die variasie van die lugspleetvloeddigtheid in die geleiers met betrekking tot hulle relatiewe lugspleetposisies in ag neem. Om voorsiening te maak vir die radiale variasie van die veld, is 'n multi-skyf eindige element modelleringstegniek ontwikkel. Die termiese analise is 'n belangrike aspek van die ontwerpsoptimering van AVPM masjiene. Vanuit 'n ontwerpsoogpunt is dit verkieslik om 'n eenvoudige maar tog effektiewe metode van verkoelingsanalise en -ontwerp te hê wat maklik toegepas kan word op 'n wye reeks van AVPM masjiene. In hierdie tesis word 'n termovloeimodel van die AVPM masjien ontwikkel. Hierdie vloeimodel is nodig vir die berekening van die lugvloeitempo, wat op sy beurt weer nodig is om die konveksie hitte-oordrag koëffisiënte te bepaal. Hierdie is belangrike parameters in die opvolgende termiese berekeninge. Eksperimentele ondersoek is uitgevoer om elkeen van die bogenoemde modelle en metodes te verifieer. Nadat hierdie modelle geïmplimenteer is, is die ontwerpsoptimering van 'n 300 kW (by eenheidsarbeidsfaktor) lugverkoelde kernlose stator AVPM generator uitgevoer. Die werkverrigtingmetings gedoen op 'n vervaardigde prototipe masjien, word in hierdie tesis vergelyk met voorspelde resultate. Daar word getoon dat die voorgestelde ontwerpsbenadering met sukses toegepas kan word om die ontwerp van die AVPM masjien te optimeer. Die voordele van hoë drywingsdigtheid, hoë benuttingsgraad, geen vertandingsdraaimomente en goeie spanningsregulasie maak hierdie masjien baie aantreklik vir generator toepassings. Die optimum bestendige werkverrigting van die AVPM masjien toon dat hierdie masjien met 'n kernlose stator 'n goeie kandidaat is vir hoë spoed generator toepassings, selfs in die boonste medium drywingsgebied. Die goeie verkoelingskapasiteit van hierdie tipe masjien hou die belofte in van'n selfverkoelde generator by hoë drywing aanslae.
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Manyage, Marubini J. "Application of improved core loss formulations to machine design." Doctoral thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/5173.

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Includes abstract.
Includes bibliographical references (p. 117-120).
The primary focus of this thesis is in core loss measurement and modeling techniques and their impact in machine design. In practice, steel manufacturers usually supply core loss data either at 50/60Hz, 1.5T or curves (core loss vs. flux density) at 50 and/or 60Hz. There is growing need for lamination characterization at high flux densities (2T) and high frequencies (3.2 kHz) for novel electric machine designs operating at high speeds. The core loss measurement concept is reviewed first. Two core loss measurement formulae are compared using core loss results from different testing frames and materials.
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Drennan, Duncan Scott. "Design of a passive rotor transverse flux rotating machine." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50313.

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Pages 6-12 missing.
Thesis (MScEng)--University of Stellenbosch, 2005.
ENGLISH ABSTRACT: The transverse flux machine (TFM) offers the opportunity of high torque to volume ratios which makes it an excellent candidate for direct wheel drives and low speed generator applications. TFMs have a three dimensional flux path which eliminates iron laminates as a viable core material. Soft magnetic composites have been adopted in these machines due to their isotropic nature. There are three main variants of TFMs, namely, active rotor (with magnets on the rotor), passive rotor (with magnets on the stator), and reluctance (with no magnets). As a relatively recent development in electrical machines, the TFM still has many hurdles facing its adoption in industry. Some of these hurdles are high cogging torque, a difficult construction, and expensive materials. This thesis focuses on the design of a three phase 50 kW passive rotor machine. Finite element simulation is used to determine the optimal configuration, and the final machine is analysed in detail. The construction process and associated problems are also detailed. The completed machine did not perform to the desired specification, but much knowledge was gleaned about the TFM, the construction caveats, and future potential directions.
AFRIKAANSE OPSOMMING: Die transversale-vloed masjien (TFM) met sy hoe draaimoment tot volume verhouding, is 'n uitstekende kandidaat vir direkte wiel aandrywing en lae spoed generator toepassings. Die vioed pad van die masjiene is drie-dimensioneel, wat yster laminasies as kern materiaal elimineer. "Soft magnetic composites" kan gebruik word vir hierdie masjiene as gevolg van hulle isotropiese eienskappe. Daar bestaan drie hoof variante van die TFM, naamlik, die aktiewe rotor (met magnete op die rotor), passiewe rotor (met magnete op to stator), en reluktansie (sonder magnete). Die TFM is 'n redelike nuwe tipe masjien en daar is nog probleme wat opgelos moet word voordat die industrie sal begin om dit te gebruik. Van hierdie probleme is "cogging" draaimoment, 'n moeilike konstruksie en duur materiale. Die fokus van hierie tesis is op die ontwerp van 'n 50 kW drie-fase passiewe rotor masjien. Eindige element simulasie is gebruik om die optimale konfigurasie te kry, en 'n analise is gedoen op die finale masjien. Die konstruksie proses en die probleme wat daarmeer saam gaan is ook beskryf. Die prototipe masjien wat gebou is het nie aan sy oorspronklike spesifikasie voldoen nie, maar baie kennis is opgedoen oor die TFM, die konstruksie proses, en potensiele toekomende toepassings.
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Bomela, Xola B. "Some design aspects of the multi flux barrier rotor reluctance synchronous machine." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51912.

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Thesis (MEng)--University of Stellenbosch, 2000.
ENGLISH ABSTRACT: This thesis deals with different design aspects of the multi-flux barrier rotor of the reluctance synchronous machine (RSM). The effect of the different designs on the performance of the RSM is investigated by means of two-dimensional finite element analysis. The finite element analysis is also directly used in the optimum design of the rotor of the RSM. The importance of the use of the finite element analysis in the design and performance calculations of the RSM is illustrated in this thesis. The design aspects of the RSM which are focussed on in this thesis are, amongst other things, the chording of the stator winding, the skewing of the rotor and the ratio of the number of rotor flux barriers to the number of stator slots of the RSM. The effects of these design aspects on the average torque and torque ripple of the RSM are investigated and general design directives are given. The occurrence of flux pulsations in the stator teeth and rotor iron segments of the RSM are also studied to some extent. The finite element optimum design of a4-pole RSM-rotor with a high number of flux barriers is described in the thesis. This optimum designed rotor is built and the RSM with this rotor is tested in the laboratory. Its calculated and measured performances are studied and compared with a conventional, low number rotor flux barrier RSM. It is found, amongst other things, that the RSM with the high number of rotor flux barriers has a slightly higher average torque with a significantly lower torque ripple.
AFRIKAANSE OPSOMMING: Hierdie tesis handeloor verskillende ontwerp-aspekte van die reluktansie sinchroonmasjien (RSM) met 'n multi-vloedversperringsrotor. Die effek van die verskillende ontwerpe op die vermoë van die RSM is met behulp van twee-dimensionele eindige element analise ondersoek. Die eindige element analise is ook direk in die optimum ontwerp van die rotor van die RSM gebruik. Die belangrikheid van die gebruik van die eindige element analise in die ontwerp en vermoë-berekening van die RSM word in die tesis geïllustreer. Die ontwerp-aspekte van die RSM waarop in hierdie tesis gefokus word, is onder andere die spoelsteekverkorting van die statorwikkeling, die skuinsing van die rotor en die verhouding van die getal rotor-vloedverperrings tot die getal statorgIeuwe van die RSM. Die effek van hierdie ontwerpaspekte op die gemiddelde draaimoment en draaimoment-rimpel van die RSM word ondersoek en algemene riglyne vir die ontwerp van die RSM word gegee. Die voorkoms van vloedpulsasies in die statortande en rotor yster segmente van die RSM word ook deels ondersoek. Die eindige element optimum ontwerp van 'n 4-pool RSM-rotor met 'n hoe getal vloedversperrings word in die tesis beskryf. Hierdie optimum ontwerpte rotor is gebou en die RSM met hierdie rotor is in die laboratorium getoets. Die berekende en gemete vermoë is bestudeer en vergelyk met die vermoë van 'n RSM met 'n konvensionele, lae getal vloedversperrings rotor. Dit is onder andere gevind dat die RSM met die hoë getal rotor-vloedversperrings 'n effens hoër gemiddelde draaimoment het met 'n behuidende laer draaimoment-rimpel.
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Di, Nardo Mauro. "Design of high speed synchronous reluctance machine." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/43223/.

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This thesis describes the work done during the several stages of the design, analyse, manufacture and test of a high speed synchronous reluctance machine capable of delivering 5 kW at 80 krpm. In order to meet such demanding speed requirement, several multi-disciplinary design exercises have been carried out having different aims. First the influences of the speed-dependent limiting factors on the machine performance have been investigated by analytical methodologies. After the preliminary analytical design, the main challenges related with the structural and electromagnetic FE-based design refinements have been identified. A comparative study has been then presented with the purpose of identify the most effective rotor design approach in terms of performance of the final design and computational effort related for its achievement. Once the design strategy has been chosen, the advantages of considering rotor parametrization of increasing complexity are evaluated via a comparative study showing the results of several structural optimizations. This study indicated the optimal geometry to manufacture. Prior to the machine prototyping, the influence of the rotor manufacturing tolerance as well as the thermal limitations on the machine performance have been deeply analysed. Tests carried out on the prototype have essentially validated the proposed design approach. In addition, an investigative study aimed at identifying and understanding the reasons of the found discrepancy between the measured and expected performance is also reported.
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Parra, Luis 1972. "Design of an electrocardiogram machine using a personal computer." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47506.

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Zeng, Haoyang Ph D. Massachusetts Institute of Technology. "Machine learning models for functional genomics and therapeutic design." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122689.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 213-230).
Due to the limited size of training data available, machine learning models for biology have remained rudimentary and inaccurate despite the significant advance in machine learning research. With the recent advent of high-throughput sequencing technology, an exponentially growing number of genomic and proteomic datasets have been generated. These large-scale datasets admit the training of high-capacity machine learning models to characterize sophisticated features and produce accurate predictions on unseen examples. In this thesis, we attempt to develop advanced machine learning models for functional genomics and therapeutics design, two areas with ample data deposited in public databases and tremendous clinical implications. The shared theme of these models is to learn how the composition of a biological sequence encodes a functional phenotype and then leverage such knowledge to provide insight for target discovery and therapeutic design.
First, we design three machine learning models that predict transcription factor binding and DNA methylation, two fundamental epigenetic phenotypes closely tied to gene regulation, from DNA sequence alone. We show that these epigenetic phenotypes can be well predicted from the sequence context. Moreover, the predicted change in phenotype between the reference and alternate allele of a genetic variant accurately reflect its functional impact and improves the identification of regulatory variants causal for complex diseases. Second, we devise two machine learning models that improve the prediction of peptides displayed by the major histocompatibility complex (MHC) on the cell surface. Computational modeling of peptide-display by MHC is central in the design of peptide-based therapeutics.
Our first machine learning model introduces the capacity to quantify uncertainty in the computational prediction and proposes a new metric for peptide prioritization that reduces false positives in high-affinity peptide design. The second model improves the state-of-the-art performance in MHC-ligand prediction by employing a deep language model to learn the sequence determinants for auxiliary processes in MHC-ligand selection, such as proteasome cleavage, that are omitted by existing methods due to the lack of labeled data. Third, we develop machine learning frameworks to model the enrichment of an antibody sequence in phage-panning experiments against a target antigen. We show that antibodies with low specificity can be reduced by a computational procedure using machine learning models trained for multiple targets. Moreover, machine learning can help to design novel antibody sequences with improved affinity.
by Haoyang Zeng
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Liu, Yu. "SLOTLESS SIX-PHASE BRUSHLESS DC MACHINE DESIGN AND STEPPING VECTOR CONTROL." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440086585.

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Books on the topic "Electrical machine design"

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Borisavljevic, Aleksandar. Limits, Modeling and Design of High-Speed Permanent Magnet Machines. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Lucian, Tutelea, ed. Electric machines: Steady state, transients, and design with MATLAB. Boca Raton: Taylor & Francis, 2009.

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Marchenko, Aleksey, and Yu Babichev. Electrical engineering. ru: INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1587594.

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The textbook discusses the analysis and calculation of electrical and magnetic circuits, studied the purpose, design and functioning of electromagnetic devices, transformers and electrical machines. A separate chapter is devoted to the basics of electric drives — in particular, the choice of electric motor power for drives with different operating modes and their verification by heating and overload capacity. The systematic presentation of the material of module 1 "Electrical Engineering" meets the requirements for the results of mastering the basic discipline "Electrical Engineering and Electronics", which is part of the professional cycle of disciplines of the main educational programs of the federal state educational standards of higher education for bachelors of non-electrical engineering and engineers of non-electrical engineering specialties. For students of higher educational institutions studying in non-electrotechnical areas of bachelor's and graduate training.
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Electric machines: Steady-state theory and dynamic performance. Dubuque, Iowa: W.C. Brown, 1985.

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Sarma, Mulukutla S. Electric machines: Steady-state theory and dynamic performance. 2nd ed. Boston: PWS Publishing, 1996.

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Electric machines: Steady-state theory and dynamic performance. 2nd ed. Minneapolis/St. Paul: West, 1994.

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Electric machines: Steady-state theory and dynamic performance. St. Paul: West Pub. Co., 1986.

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Smirnov, Aleksandr. Electromechanics. Fundamentals of theory and computational analysis of electric machines. ru: INFRA-M Academic Publishing LLC., 2024. http://dx.doi.org/10.12737/1211188.

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The basic theoretical principles of electromechanics, the theory of transformers and rotating machines of alternating and direct current, on the basis of which mathematical models and computational algorithms are built, are described. Methods for determining the characteristics and design of contactless electrical machines are presented: asynchronous motors, contactless synchronous (inductor) motors and electromagnetic bearings with calculation examples. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for students, undergraduates, postgraduates and certified specialists whose educational, scientific or professional interests are related to the field of electrical engineering and modern electric drive.
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Pyrhönen, Juha, Tapani Jokinen, and Valéria Hrabovcová. Design of Rotating Electrical Machines. Chichester, UK: John Wiley & Sons Ltd, 2013. http://dx.doi.org/10.1002/9781118701591.

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1937-, Jokinen Tapani, and Hrabovcová Valeria, eds. Design of rotating electrical machines. Chichester, West Sussex, United Kingdom: Wiley, 2014.

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Book chapters on the topic "Electrical machine design"

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Chen, Fangzichun, Xinyue Shao, and Ting Qiu. "Man-Machine Interface Design Analysis of Multi-function Printing (Copying) Machine." In Lecture Notes in Electrical Engineering, 569–76. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5963-8_78.

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Yaohui, Wu, Shao Pengfei, and Wei Rencan. "Design of Coreless Winding Machine Electrical Control System." In Lecture Notes in Electrical Engineering, 321–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27311-7_43.

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Chen, Jianan, Jiuchun Jiang, and Jingxin Li. "Design of Median Machine in Battery Test System." In Lecture Notes in Electrical Engineering, 395–403. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7986-3_42.

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Chavan, Satishkumar S., Carl Fernandes, Pratibha R. Dumane, and Satishkumar L. Varma. "Design and Implementation of Automatic Coin Dispensing Machine." In Lecture Notes in Electrical Engineering, 379–85. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8715-9_46.

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Lin, Che-Chern, Chia-Jung Hsu, Ming-Jun Chan, Chih-Hung Chung, Chong-Cheng Hong, and Hung-Jen Yang. "Design of a Computer-Based Triangle Chess Machine." In Lecture Notes in Electrical Engineering, 575–79. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-85437-3_58.

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He, Siyuan, Chuan Wang, Xiaowei Yang, Qiao Wang, and Fei Li. "Optimization Design of Mechanical System Human–Machine Interface." In Lecture Notes in Electrical Engineering, 467–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48224-7_55.

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Mahamude, A. S. F., D. Ramasamy, W. S. W. Harun, K. Kadirgama, J. Mogan, Suhelmy Azhar Bin Said, and Kaniz Farhana. "Design of Intelligent Mixer Machine for Food Applications." In Lecture Notes in Electrical Engineering, 213–29. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1577-2_16.

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Feng, Wei, WanFeng Mao, Baiqiao Huang, Guanqun Zhang, Pengyi Zhang, Xing Li, Jian Su, and Xingjun Yuan. "Sketch Recognition and Interaction Design Based on Machine Learning." In Lecture Notes in Electrical Engineering, 329–37. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8779-1_39.

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Liu, Hangling, Huiran Ye, and Qiao Guo. "Man-Machine Analysis and Design of Handheld Infrared Thermometer." In Lecture Notes in Electrical Engineering, 315–21. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5963-8_44.

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Xu, Xin, Bin Lv, Yanting Hu, Yun Zhou, and Jiansheng Wu. "EEG Filtering Based on Machine Learning Simulation Design Analysis." In Lecture Notes in Electrical Engineering, 1363–71. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-4981-2_149.

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Conference papers on the topic "Electrical machine design"

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Centner, Matthias. "Machine design software for induction machines." In 2008 International Conference on Electrical Machines (ICEM). IEEE, 2008. http://dx.doi.org/10.1109/icelmach.2008.4800202.

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Hu, Xuanyang, Yuping Qian, Bijie Yang, Chaofan Dong, Yangjun Zhang, and Weilin Zhuge. "Aerodynamic Design of Cooling Guide for Electrical Machine in Electric Ducted Fan." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-82347.

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Abstract Electric ducted fan has newly emerged as the most compact type of propulsion fan for flying cars, because of its flexible configuration arrangement, low noise level and high safety level operation. Typically, an electric ducted fan is composed of a hub-driven fan and a hub-mounted inner rotor electrical machine. The thermal management of the hub-mounted electrical machine is essential because it determines the machine’s continuous output power and reliability, as well as the fan thrust force. The heat transmitted from the stator winding to the cooling fin is dissipated by introducing the air flow at hub region to the cooling fin. Therefore, in order to better improve the thermal performance of the cooling fin, an aerodynamic design of cooling fin is proposed in this paper for better thermal management of stator end-windings. Firstly, for a certain desired power output of electrical machine under temperature constraints of stator winding, lumped thermal network is established to derive the requirement of heat transfer coefficients of the cooling fin. Then, from engineering feasibility, three different cooling fin designs including straight type, arc-shape type and airfoil shape type are tested by computational fluid dynamics. The evaluation of the cooling fin designs includes the flow characteristics, power requirements and thermal characteristics for stator winding cooling purposes. In comparison with the conventionally straight type cooling fin, improvements are gained from the designed arc-shape type and airfoil shape type cooling fin configurations, whereas the fan thrust force remains the same simultaneously. It is verified that the arc-shape type and airfoil shape type cooling fins are promising in enhancing the thermal management performance of the electrical machine stator winding with little power requirement.
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Ismagilov, Flur R., Vyacheslav Ye Vavilov, and Valentina V. Ayguzina. "Genetic Algorithms for Electrical Machine Optimal Design." In 2018 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2018. http://dx.doi.org/10.1109/icieam.2018.8728772.

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Mayor, K., L. Montgomery, and K. Hattori. "Grid code impact on electrical machine design." In 2012 IEEE Power & Energy Society General Meeting. New Energy Horizons - Opportunities and Challenges. IEEE, 2012. http://dx.doi.org/10.1109/pesgm.2012.6345292.

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Sleiti, Ahmad K. "Transient Thermal Analysis of Electrical Machine." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11021.

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Transient thermal analysis of electric machine under realistic operation conditions and thermal losses is studied. A symmetrical portion of the stator and rotor is modeled and all thermal losses and cooling boundary conditions are applied according to operational duty cycle. It is found that there is a temperature gradient across the stator of more than 30 °C, across the rotor of more than 70 °C and across the whole machine of more than 100 °C. These temperature gradients could cause high thermal stresses and lead to severe reduction in the machine life. It is extremely important in future designs to consider reducing the temperature gradients by optimizing the design of the electric machines through advanced cooling techniques and strategies.
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Mann, Steve, Phillip V. Do, Danson Evan Garcia, Jesse Hernandez, and Humza Khokhar. "Electrical Engineering Design with the Subconscious Mind." In 2020 IEEE International Conference on Human-Machine Systems (ICHMS). IEEE, 2020. http://dx.doi.org/10.1109/ichms49158.2020.9209380.

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Golovanov, Dmitry, David Gerada, Luca Papini, Zeyuan Xu, and Chris Gerada. "A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft." In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC). IEEE, 2018. http://dx.doi.org/10.1109/esars-itec.2018.8607715.

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Schoning, M. "Automated electrical machine design with differential evolution techniques." In 2011 1st International Electric Drives Production Conference (EDPC). IEEE, 2011. http://dx.doi.org/10.1109/edpc.2011.6085574.

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Athavale, Apoorva, Huthaifa Flieh, Brent S. Gagas, Timothy S. Slininger, and Robert D. Lorenz. "Machine design for self-sensing." In 2016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED). IEEE, 2016. http://dx.doi.org/10.1109/sled.2016.7518789.

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Wang, Qi, Ziyan Ren, and Dianhai Zhang. "Optimal Design of Electrical Machine Utilizing Hybrid Kernel Extreme Learning Machine Method." In 2023 26th International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2023. http://dx.doi.org/10.1109/icems59686.2023.10345235.

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Reports on the topic "Electrical machine design"

1

Yang, Yu, and Hen-Geul Yeh. Electrical Vehicle Charging Infrastructure Design and Operations. Mineta Transportation Institute, July 2023. http://dx.doi.org/10.31979/mti.2023.2240.

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California aims to achieve five million zero-emission vehicles (ZEVs) on the road by 2030 and 250,000 electrical vehicle (EV) charging stations by 2025. To reduce barriers in this process, the research team developed a simulation-based system for EV charging infrastructure design and operations. The increasing power demand due to the growing EV market requires advanced charging infrastructures and operating strategies. This study will deliver two modules in charging station design and operations, including a vehicle charging schedule and an infrastructure planning module for the solar-powered charging station. The objectives are to increase customers’ satisfaction, reduce the power grid burden, and maximize the profitability of charging stations using state-of-the-art global optimization techniques, machine-learning-based solar power prediction, and model predictive control (MPC). The proposed research has broad societal impacts and significant intellectual merits. First, it meets the demand for green transportation by increasing the number of EV users and reducing the transportation sector’s impacts on climate change. Second, an optimal scheduling tool enables fast charging of EVs and thus improves the mobility of passengers. Third, the designed planning tools enable an optimal design of charging stations equipped with a solar panel and battery energy storage system (BESS) to benefit nationwide transportation system development.
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Modlo, Yevhenii O., Serhiy O. Semerikov, Stanislav L. Bondarevskyi, Stanislav T. Tolmachev, Oksana M. Markova, and Pavlo P. Nechypurenko. Methods of using mobile Internet devices in the formation of the general scientific component of bachelor in electromechanics competency in modeling of technical objects. [б. в.], February 2020. http://dx.doi.org/10.31812/123456789/3677.

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An analysis of the experience of professional training bachelors of electromechanics in Ukraine and abroad made it possible to determine that one of the leading trends in its modernization is the synergistic integration of various engineering branches (mechanical, electrical, electronic engineering and automation) in mechatronics for the purpose of design, manufacture, operation and maintenance electromechanical equipment. Teaching mechatronics provides for the meaningful integration of various disciplines of professional and practical training bachelors of electromechanics based on the concept of modeling and technological integration of various organizational forms and teaching methods based on the concept of mobility. Within this approach, the leading learning tools of bachelors of electromechanics are mobile Internet devices (MID) – a multimedia mobile devices that provide wireless access to information and communication Internet services for collecting, organizing, storing, processing, transmitting, presenting all kinds of messages and data. The authors reveals the main possibilities of using MID in learning to ensure equal access to education, personalized learning, instant feedback and evaluating learning outcomes, mobile learning, productive use of time spent in classrooms, creating mobile learning communities, support situated learning, development of continuous seamless learning, ensuring the gap between formal and informal learning, minimize educational disruption in conflict and disaster areas, assist learners with disabilities, improve the quality of the communication and the management of institution, and maximize the cost-efficiency. Bachelor of electromechanics competency in modeling of technical objects is a personal and vocational ability, which includes a system of knowledge, skills, experience in learning and research activities on modeling mechatronic systems and a positive value attitude towards it; bachelor of electromechanics should be ready and able to use methods and software/hardware modeling tools for processes analyzes, systems synthesis, evaluating their reliability and effectiveness for solving practical problems in professional field. The competency structure of the bachelor of electromechanics in the modeling of technical objects is reflected in three groups of competencies: general scientific, general professional and specialized professional. The implementation of the technique of using MID in learning bachelors of electromechanics in modeling of technical objects is the appropriate methodic of using, the component of which is partial methods for using MID in the formation of the general scientific component of the bachelor of electromechanics competency in modeling of technical objects, are disclosed by example academic disciplines “Higher mathematics”, “Computers and programming”, “Engineering mechanics”, “Electrical machines”. The leading tools of formation of the general scientific component of bachelor in electromechanics competency in modeling of technical objects are augmented reality mobile tools (to visualize the objects’ structure and modeling results), mobile computer mathematical systems (universal tools used at all stages of modeling learning), cloud based spreadsheets (as modeling tools) and text editors (to make the program description of model), mobile computer-aided design systems (to create and view the physical properties of models of technical objects) and mobile communication tools (to organize a joint activity in modeling).
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