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Journal articles on the topic 'Ansys Maxwell 3D'
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1
Giorla, Dalila, Riccardo Roccella, Rosa Lo Frano, and Giulio Sannazzaro. "EM zooming procedure in ANSYS Maxwell 3D." Fusion Engineering and Design 132 (July 2018): 67–72. http://dx.doi.org/10.1016/j.fusengdes.2018.04.096.
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ÖZÜPAK, Yıldırım. "Performing Structural Design and Modeling of Transformers Using ANSYS-Maxwell." Brilliant Engineering 2, no. 2 (2021): 38–42. http://dx.doi.org/10.36937/ben.2021.002.005.
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Transformers have attracted great interest since they have been used due to their robustness and application in power systems. Therefore, the nominal values of transformers grow even more in larger power systems due to the constantly increasing power demand. Many types of research are carried out to increase the performance characteristics of transformers and their compatibility with power systems. There are different methods and analysis tools for these studies. One of them is ANSYS@Maxwell, which performs analysis based on the Finite Element Method (FEM). With this program, the design, modeling, analysis, and performance evaluation of the transformer in a high-performance simulation environment can be achieved through effective strategic modeling. In this study, the design and modeling of a three-phase core-type transformer with coils and terminals are explained in detail in ANSYS @ Maxwell simulation platform. Besides, the transformer models examined were adapted using ANSYS@MAXWELL software based on the finite element method. Analyzes are performed to estimate the core-losses, leak-losses, DC-losses, and winding-eddy current losses-of transformers with this program. A large number of meshes were used in FEM analysis of 2D and 3D models to examine the losses in detail.
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Al-Jubori, Waleed Khalid Shakir, and Yasir Abdulhafedh Ahmed. "Study and analysis the effect of variable applied voltage on SCIM performances based on FEA." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 3 (2020): 1230. http://dx.doi.org/10.11591/ijpeds.v11.i3.pp1230-1240.
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Study and analysis the effect of variable applied voltage on SCIM performances based on FEA is presented. Three phase squirrel cage induction motor SCIM has been investigated and numerically simulated using finite element method (FEM) with the aid of ANSYS software (RMxprt and Maxwell 2D/3D). This research presents study and analysis of the effects of the voltage variation on performance and efficiency of the three-phase induction motor of the squirrel cage type. The Finite Elements Analysis Method FEA is used as one of the best methods for analysis and simulation of electrical motors in addition to the possibility of dealing with nonlinear equations, Since the induction motor is a complex electromagnetic reaction, the researchers used the ANSYS program to represent and analyze the performance of the motor under variable supply voltage. The case studied in this research is three phases, 380V, 50Hz, 2.2kW, induction motor that widely use in industrial application. The aim of this research is to study the effect of voltage variation on efficiency, current value, power factor and torque of SCIM. The RMxprt software has been used for modeling and simulating the induction motor and calculating the values of phases currents, input and output power in additional of overall efficiency at steady state condition. The next stage of the research is creating Maxwell 2-D design from the base model of RMxprt software, Maxwell 2-D model has the ability to computing the distribution of magnetic field and explaining the performance under steady-state operation. The obtained results show significant reduction of motor performance due to the effect of variation of apply voltage.
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Fiore, P. V., D. B. Maghous, and A. Campos Filho. "A tridimensional finite element approach to model a tunnel with shotcrete and precast concrete." Revista IBRACON de Estruturas e Materiais 9, no. 3 (2016): 403–13. http://dx.doi.org/10.1590/s1983-41952016000300005.
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ABSTRACT This paper describes a numerical simulation with 3D finite elements of a tunnel. The viscoplastic law of Perzyna represents the rockmass behavior. The concrete, shotcrete or precast, is modeled as a viscoelastic material through the Maxwell and Kelvin chain models. Finite element simulations are performed by incorporating subroutines for viscoelastic concrete models in the ANSYS code. The method to simulate tunnel excavations is by activating and deactivating elements in sequential steps. In the first part of the paper two validations are performed. The analytical solution and the deformation achieved on the stabilization in the ANSYS code are compared with an unlined tunnel. A lined tunnel, with an elastic and viscoplastic rockmass combined with an elastic lining, is compared with the results of the GEOMEC91 code. In the second part, it is compared the same tunnel with two different concrete lining for two chain models. Finally, it is modeled the Kielder experimental tunnel, which in situ measured data is available.
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Chen, Na, Yan Song Wang, Hui Guo, Jie Lei, and Tao Zhang. "A Study on Static Features of a High-Speed Solenoid Valve Used in Diesel Engine." Applied Mechanics and Materials 189 (July 2012): 393–97. http://dx.doi.org/10.4028/www.scientific.net/amm.189.393.
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Based on the Maxwell equation and simulation analysis method, this paper investigates and retains the optimized parameters of a high-speed solenoid valve, which is very important for electrical unit pump (EUP) diesels. According to the electromagnetic theory, firstly, a three-dimensional (3D) model of the solenoid valve is established, and working process of the electromagnets is analyzed by using both the theoretical method and Ansys Workbench software. In view of the electromagnetic force, furthermore, several parameters related to the solenoid valve performance are considered and their effects on solenoid valve are analyzed and discussed. Finally, the optimized parameters are proposed for the analyzed solenoid valve and proved by theoretical equations. The studied approach can be extended to any other field related to the electromagnetic device design.
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Mendes, Gabriel, Ângela Ferreira, and Ednei Miotto. "Coupled Electromagnetic and Thermal Analysis of Electric Machines." MATEC Web of Conferences 322 (2020): 01052. http://dx.doi.org/10.1051/matecconf/202032201052.
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This paper deals with the design process of electric machines, proposing a design flowchart which couples the electromagnetic and thermal models of the machine, assisted by finite element techniques. The optimization of an electrical machine, in terms of the energy efficiency and cost reduction requirements, benefits from the coupling design of the electromagnetic and thermal models. It allows the maximization of the current density and, consequently, the torque/power density within thermal limits of the active materials. The proposed coupled electromagneticthermal analysis is demonstrated using a single-phase transformer of 1 kVA. Finite element analysis is carried out via ANSYS Workbench, using Maxwell 3D for the electromagnetic design, with resistive and iron losses directly coupled to a steady-state thermal simulation, in order to determine the temperature rise which, in turn, returns to electromagnetic model for material properties update.
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Gao, Sumei, Quanyong Ju, and Chaowu Jin. "Support characteristics and application of permanent magnet suspension active mass drive system." International Journal of Applied Electromagnetics and Mechanics 67, no. 1 (2021): 83–96. http://dx.doi.org/10.3233/jae-201631.
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In this paper, a kind of permanent magnet (PM) suspension active mass drive mechanism is proposed, and its structure is designed. It has the advantages of non-contact, almost zero friction, small volume, and so on. Aiming at the active driving mass mechanism of PM suspension, the unidirectional PM suspension system and bi-directional PM suspension system are designed respectively, and their analytical models are established. By analyzing and calculating the magnetic force of the unidirectional and bi-directional PM suspension system, the support coefficient of the suspension system is deduced. After theoretical analysis, the structure is simulated and verified by ANSYS MAXWELL 3D in order to determine the correctness of the analytical calculation of the model. Finally, a test device is made and experiments are carried out in the constant temperature laboratory. The experimental results show that the Nd-Fe-B PMs used in the unidirectional suspension system can provide a maximum force of 260 N, which verify the feasibility of the PM suspension active mass drive system.
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Md Ghazaly, Mariam, Tan Aik Choon, Che Amran Aliza, and Sato Kaiji. "Force Characterization of a Rotary Motion Electrostatic Actuator Based on Finite Element Method (FEM) Analysis." Applied Mechanics and Materials 761 (May 2015): 233–37. http://dx.doi.org/10.4028/www.scientific.net/amm.761.233.
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Two types of rotary motion electrostatic actuators were designed and analyzed using Finite Element Method (FEM) analysis. This paper discussed the comparisons and detailed thrust force analysis of the two actuators. Both designs have similar specifications; i.e the number of rotor’s teeth to stator’s teeth ratio, radius and thickness of rotor, and gap between stator and rotor. Two structures were designed & evaluated; (a) Side-Driven Electrostatic Actuator and (b) Bottom-Driven Electrostatic Actuator. The paper focuses on comparing & analyzing the generated electrostatic thrust force for both designs when the electrostatic actuator’s parameters are varied. Ansys Maxwell 3D software is used to design and analyze the generated thrust force of the two rotary motion electrostatic actuators. The FEM analyses have been carried out by (i) varying the actuator size; (ii), varying the actuator thickness and (iii) varying the actuator teeth ratio. The FEM analysis shows that the Bottom-Drive Electrostatic Actuator exhibit greater thrust force, 4931.80μN compared to the Side-Drive Electrostatic Actuator, 240.96μN; when the actuator’s radius is 700μm, thickness is 50μm, gap between the stator and rotor is 2μm and the teeth ratio is 16:12.
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Ustun, Ozgur, Omer Cihan Kivanc, and Mert Safa Mokukcu. "A Linear Brushless Direct Current Motor Design Approach for Seismic Shake Tables." Applied Sciences 10, no. 21 (2020): 7618. http://dx.doi.org/10.3390/app10217618.
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The progress in material and manufacturing technologies enables the emergence of new research areas in electromagnetic actuator applications. Permanent magnet (PM) linear motors are preferred to achieve precise position control and to meet the need for high dynamic forces in the seismic shake tables that are used in analyzing reactions of structure models. The design approaches on the linear motors used in the seismic shake tables may vary depending on the desired force, stroke and acceleration values. Especially, the maximum width, the maximum depth, the maximum linear motor length in longitudinal direction and the maximum travelling distance parameters are the primary design criteria in seismic shake table drive systems. In this paper, a design approach for a linear PM brushless direct current (BLDC) motor with high force/volume, force/weight and force/input power ratios is developed. The design was analyzed using two-dimensional (2D) and three-dimensional (3D) finite element method (FEM) approaches through the ANSYS Maxwell software. The mathematically designed linear BLDC motor was manufactured and subjected to displacement, acceleration and force tests that are used in seismic analyses. The results of the experimental tests validate the convenience of the proposed design approach and the selected parameters.
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He, Min, Zhifeng Zhang, Weimin Mao, Bao Li, Yuelong Bai, and Jun Xu. "Numerical and Experimental Study on Melt Treatment for Large-Volume 7075 Alloy by a Modified Annular Electromagnetic Stirring." Materials 12, no. 5 (2019): 820. http://dx.doi.org/10.3390/ma12050820.
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This study presents a modified annular electromagnetic stirring (M-AEMS) melt treatment suitable for a large-volume and high-alloyed aluminum alloy. A 3D computational model coupling an electromagnetic model with a macroscopic heat and fluid-flow model was established by using Ansoft Maxwell 3D and Fluent from ANSYS workbench, and the effects of the electromagnetic shielding ring, the height of the magnet yoke, the shape of the iron core, and the internal cooling mandrel on the electromagnetic, thermal and flow fields were studied numerically. Based on the optimal technical parameters, the effectivity of the M-AEMS process by using 7075 alloy was validated experimentally. The results show that a favorable electromagnetic field distribution can be achieved by changing the magnet yoke height, the iron-core shape and the electromagnetic shielding ring, and the melt temperature of the 7075 alloy can drop rapidly to the pouring temperature by imposing the internal cooling mandrel; compared with ordinary annular electromagnetic stirring, the M-AEMS process creates a lower magnetic strength near the melt top, beneficial for stabilizing the melt surface; meanwhile, it yields a higher magnetic strength near the melt bottom, which increases the shear rate and ensures an optimal stirring effect. Therefore, M-AEMS works more efficiently because the thermal and composition fields become uniform in a shorter time, which reduces the average grain size and the composition segregation, and a more stable melt surface can be obtained during treatment, which reduces the number of air and oxide inclusions in the melt.
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Jurdana, Vedran, Neven Bulic, and Wolfgang Gruber. "Topology Choice and Optimization of a Bearingless Flux-Switching Motor with a Combined Winding Set." Machines 6, no. 4 (2018): 57. http://dx.doi.org/10.3390/machines6040057.
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The purpose of this paper is to choose a new topology for bearingless flux-switching slice motors, regarding the number of stator and rotor poles, with a combined winding set. Additionally, the selected motor topology is optimized with finite element method (FEM) simulations to improve the performance. Bearingless slice drives feature a magnetically-suspended rotor disk passively stabilized by reluctance forces due to a permanent magnet (PM) bias flux in the air gap and actively controlled by the generation of radial bearing forces and motor torque. Usage of the combined winding set, where each phase generates both motor torque and suspension forces, opens the opportunity for a new topology. The topology choice and optimization are based on FEM simulations of several motor optimization criteria, as the passive axial, tilting and radial stiffness values and the active torque and bearing forces, which are simulated regarding the motor height and specific stator and rotor parameters. Saturation, cogging torque and cogging forces are also analyzed. The 3D FEM program ANSYS Maxwell 2015 was used. The results led to an optimized bearingless flux-switching motor topology with six new stator segments and seven rotor poles. By optimizing the geometry, a considerable improvement of performance was reached. This geometry optimization is a base for a future prototype model.
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Guo, Zhaoyu, Danfeng Zhou, Qiang Chen, Peichang Yu, and Jie Li. "Design and Analysis of a Plate Type Electrodynamic Suspension Structure for Ground High Speed Systems." Symmetry 11, no. 9 (2019): 1117. http://dx.doi.org/10.3390/sym11091117.
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The research of ground high speed systems has been popular, especially after the announcement of Hyperloop concept, and the analysis of the suspension structure is critical for the design of the system. This paper focuses on the design and analysis of a plate type electrodynamic suspension (EDS) structure for the ground high speed system. The working principle of proposed whole system with functions of levitation, guidance and propulsion is presented, and the researched EDS structure is composed of permanent magnets (or superconducting magnets) and non-ferromagnetic conductive plates. Levitation and guidance are achieved by forces generated through the motion of the magnets along the plates. The plate type EDS structure is analyzed by three-dimensional (3D) finite element method (FEM) in ANSYS Maxwell. Structure parameters that affect the EDS performances are investigated, which include dimensions of magnets and plates, plate material, the relative position between magnets and plates, and arrangement of magnets. The properties of forces are discussed, especially for the levitation force, and the levitation working point is decided based on the analysis. Levitation-drag ratio of the plate type structure is investigated, and it improves with the increasing of vehicle velocity. The analysis results indicate that the plate type EDS structure is feasible for applications in ground high speed systems. The following study will focus on the dynamic research of the EDS system.
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Timoshkov, I. V., A. V. Khanko, V. I. Kurmashev, et al. "APPLICATIONS OF UV-LIGA AND GRAYSCALE LITHOGRAPHY FOR DISPLAY TECHNOLOGIES." Doklady BGUIR, no. 7 (125) (December 7, 2019): 81–87. http://dx.doi.org/10.35596/1729-7648-2019-125-7-81-87.
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In the article MEMS technologies for display production and application presented. UV-LIGA and greyscale lithography based on SU-8 resist approaches were shown. Methods, technologies and structures of heterogeneous materials with soft magnetic properties, pros and cons are discussed. Unique specific parameters of soft magnetic composite material were achieved: magnetic induction of saturation – 2,1 Т, working frequency range – up to 1 MHz, permeability – up to 3000, total loss – 8 W/kg, Curie temperature – above 800 ºС. Electroplating allows deposition of soft magnetic alloys on the conductive substrate. Metals like Fe, Ni, Co with additives like B, P were used to get the best soft magnetic properties. Special codeposition process was developed to allow insertion of soft magnetic composite powder filaments into soft magnetic matrix formed during. It allows developing magnetic micromotors for display production. Simulation of the hybrid step micromotors was carried out in Ansys Maxwell 19. It was demonstrated that it is possible to get 10 mN m tourqe under 25 μm rotor-stator air gap. Only presented microtechnologies can provide such accuracy of the mciromotors elements. As for greyscale photolithography, special grey mask were developed and it was demonstrated the possibility to produce controllable real 3D relief on the SU-8 photoresist. Thus, microtechnologies should be integrated into display technology to provide cost effective production and advanced properties of final products.
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Chen, Zongyu, Jiuzhi Dong, and Xingfei Li. "Study on the electromagnetic fields of a novel small-angle transducer used in high-precision inertial sensors." Sensor Review 39, no. 5 (2019): 697–703. http://dx.doi.org/10.1108/sr-11-2018-0313.
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Purpose Microsyn signal generators have been used in high-precision inertial sensors for their good structural stiffness and high sensitivity. However, as the stator and the rotor of the microsyn are both constructed of silicon-steel laminations with high permeability, an extremely small non-concentricity between the stator and rotor of microsyn will cause two random reaction torques acting on the output axis. As a result, difficulty arises in compensating for these random reaction torques. This study aims to investigate the electromagnetic fields of a novel angular transducer characterized by high sensitivity. Design/methodology/approach Based on the operation principles of the new transducer, the output voltage is decided by the time rate of change of the net magnetic flux of each output pole. The transient analysis of the electromagnetic field of the transducer is carried out by ANSYS Maxwell-3D. Findings The distributions of the magnetic flux of the transducer’s interior and eddy current on the rotor are consistent with the results of theory analysis. Moreover, the leakage flux mainly distributes nearby the excitation poles. The novel small-angle transducer also possesses a remarkably low reaction torque and power loss. Practical implications Study on the electromagnetic fields of the new transducer not only provides a powerful basis to further improve the precision of the new transducer but also expands the scope of applications of the new transducer. Originality/value This new transducer is not only characterized by a high sensitivity, high linearity and fast response but also extremely low reaction torque and power losses. Thus, the new transducer is suitable for high-precision inertial sensors.
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Tikhonov, A. I., A. V. Stulov, I. S. Snitko, and A. V. Podobnyj. "Development of 2D models of the magnetic field for digital twin technology and generative design of power transformers." Vestnik IGEU, no. 3 (June 30, 2020): 32–43. http://dx.doi.org/10.17588/2072-2672.2020.3.032-043.
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The development of generative design technologies that solve the problems of structural optimization and digital twins, that is simulation models of devices with at least 95 % accuracy, is an urgent task. These tech-nologies are usually implemented on the basis of 3D models of physical fields, for example, using ANSYS Maxwell or COMSOL Multiphysics packages, which are demanding in terms of computer resources and de-signer skills. However, the sufficient accuracy for transformer digital twins can be achieved using chain and 2D field models. The article aims to develop the models to calculate the transformer with the accuracy and ability to take into account the design features of a particular device, which is characteristic of digital twins. This can be used in generative design of transformers and in the study of their operation modes. The finite element method implemented via the authoring EMLib library which allows calculating magnetic fields in a 2D formulation was used. The simulation methods using the MatLab Simulink SymPowerSystem package were also employed. The assumptions made during the power transformer simulation have been estimated. They include the possibility of using chain and 2D field models without taking into account the steel anisotropy with Dirichlet boundary conditions when calculating the scattering fluxes. 2D field models have been developed for calculating the main flux and scattering fluxes, which are able to form the basis for digital twin technology and generative design of transformers. A simulation model of a transformer implemented in MatLab Simulink has been provided. The possibility of using the models for diagnosing transformer faults has been demonstrated. The simulation results of a transformer with a defect have been presented. The results obtained can be used in the development of transformers to search for optimal designs and to study the results of design decisions without creating prototypes. The findings can also be applied while operating the transformers to assess the damage and failures without dismantling and according to the test results.
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Özüpak, Yıldırım, and Mehmet Salih MAMİŞ. "Güç Transformatörlerinin Yıldırım Darbe Analizlerinin ANSYS@Maxwell-3D ile Gerçekleştirilmesi." Kırklareli Üniversitesi Mühendislik ve Fen Bilimleri Dergisi, December 31, 2019. http://dx.doi.org/10.34186/klujes.571086.
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Arslan, Serdal, Yunus Bicen, and Ömür Binarbasi. "Numerical analysis and application of electric field grading device for metal-enclosed switchgear." SN Applied Sciences 3, no. 2 (2021). http://dx.doi.org/10.1007/s42452-021-04268-2.
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AbstractElectric field grading devices have great importance for both the electric power transmission and distribution systems. This paper presents an improved electric field grading device used in the medium voltage metal-enclosed switchgear. The solutions have been carried out by using Ansys Maxwell 3D software. The structure of two electrodes designed as cylindrical and elliptical have been compared to determine the electric field grading device to be used in practice. The transient and steady-state analyses have been performed in both designs. The field grading device manufactured for the metal-enclosed switchgear has been tested according to IEC standards in a high voltage laboratory environment. This study revealed that the newly designed field-grading device can be used in the metal-enclosed switchgear more safely. It also encourages researchers to optimize the electric field distribution using different geometric structures and to create running conditions in smaller indoor environments.
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"Simulation Analysis of Wireless Power Transfer for Future Office Communication Systems." International Journal of Innovative Technology and Exploring Engineering 8, no. 9S (2019): 533–38. http://dx.doi.org/10.35940/ijitee.i1084.0789s19.
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A Wireless Power Transfer system consists of a transmitter coil which is inductively coupled with secondary coil and is popular for wireless charging of future office communication system. Wireless power transfer is used in different applications ranging from mobile chargers to charging stations. In this paper simulation of Wireless Power Transfer for future office communication systems has been conducted over Maxwell 3d of Ansys electromagnetic suite. The input frequency of primary coil is varied from 1kHz -120kHz with respect to the change in resonant capacitance and observed that input frequency between 20kHz-30 kHz, the output power in secondary coil appears to be maximum at variable distances between transmitter coil and receiver coil. There is an improvement of 72% seen in the output power of secondary coil for 25kHz input frequency of primary coil as compared with 40kHz input frequency. This model can be helpful to design future Office Communication systems for charging the mobile phones, Laptops and to turn on the printer wirelessly.
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Md Ghazaly, Mariam, Lim Tzi Khang, Chin Yuen Piaw, and Sato Kaiji. "FORCE OPTIMIZATION OF AN FORCE ARTIFICIAL MUSCLE ACTUATED UNDERWATER PROBE SYSTEM USING LINEAR MOTION ELECTROSTATIC MOTOR." Jurnal Teknologi 74, no. 9 (2015). http://dx.doi.org/10.11113/jt.v74.4825.
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Two linear electrostatic motors were designed in order to optimize the force characteristics of an artificial muscle actuated underwater probe system. Finite element method (FEM) analyses are used to analyze and optimize the motor’s designed parameters. The two structures are designed to be linear-actuated and are compared under similar conditions. The objective of this research is to design, compare and analyze the effect of varying the motor’s parameters to the actuation force (Fx). First, the two structures are designed using ANSYS Maxwell 3D; i.e (a) Non-Skew-Type Electrostatic Motor and (b) Skew-Type Electrostatic Motor. Next, the thrust forces were evaluated using Finite Element Method (FEM) analyses in order to optimize the motor’s parameters. The FEM analyses are carried out by (i) varying the ratio number of electrode-to-spacer (ii) varying the motor’s gap and (iii) varying the motor’s size. The FEM analysis shows that the Skew-Type Electrostatic Motor exhibit greater actuation force, 2.7857mN compared to the Non-Skew-Type Electrostatic Motor, 1.7476mN; when the ratio number of electrode-to-spacer is 1.0:2.5.
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"Force Characterization and Optimization of the Bottom-Driven Type and Side-Driven Type Rotary Motion Electrostatic Actuator using FEM." International Journal of Innovative Technology and Exploring Engineering 8, no. 12S2 (2019): 470–75. http://dx.doi.org/10.35940/ijitee.l1090.10812s219.
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Three types of rotary motion electrostatic actuator were designed and analyzed using Finite Element Method (FEM) analysis. This paper will discuss the comparisons and detailed thrust force analysis of three types of the electrostatic actuator designs which are side-driven rotary electrostatic actuators, bottom-driven rotary electrostatic actuator (linear), and bottomdriven rotary electrostatic actuator (skewed). There are several similar parameters will be constant for the three types of rotary motion electrostatic actuator such as the number of pole of electrodes of rotor and stator, thickness of the rotor and stator, and air gap between the rotor and stator. The three designs that designed by the Ansys Maxwell 3D and analyze the force generated by the designs. There are several parameters that are varying: (I) the actuator thickness ;(ii) air gap between rotor and stator. In this paper, three types of designs for the rotary electrostatic actuator are discussed; i.e. (a) Bottom-driven (linear type), (b) bottom-driven (skewed type); and (c) Side-driven. From this research it was concluded that the bottom-driven (skewed type) actuator will produce the largest force compared to other actuator which is 5.95808mN.
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Othman, Nurmiza, Muhamad Fikri Shahkhirin Birahim, Wan Nurshazwani Wan Zakaria, Mohd Razali Md Tomari, Md Nor Ramdon Baharom, and Luqman Hakim. "A simulation study of excitation coil design in single-sided mpi scanner for human body application." Bulletin of Electrical Engineering and Informatics 8, no. 4 (2019). http://dx.doi.org/10.11591/eei.v8i4.1597.
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Magnetic particle imaging (MPI), a tomographic imaging method has been introduced for 3D imaging of human body with some potential applications such as magnetic hyperthermia and cancer imaging. It involves three important elements: tracer development using magnetic nanoparticles (MNPs), hardware realization (scanner using excitation and pickup coils), and image reconstruction optimization. Their combination will produce a high quality of image taken from any biological tissue in the human body based on the secondary magnetic field signal from the magnetized MNPs that are injected into human body. A homogeneous and adequate magnetic field strength from an excitation coil is needed to enhance the quality of the secondary signal. However, the complex surface topography of human body and physical properties of an excitation coil influence the strength and the homogeneity of the magnetic field generation at the MNPs. Therefore, this work focused on finding alternative design of excitation coil used in single sided MPI to produce up to 2 mT with high homogeneity of field distribution in the MNPs at the varied depth of 10 to 30 mm under the excitation coil. We proposed several designs with variation in physical properties and coil arrangement based on simulation study carried out by using Ansys Maxwell.
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Yusri, Izzati, Mariam Md Ghazaly, Esmail Ali Ali Alandoli, et al. "OPTIMIZATION OF THE FORCE CHARACTERISTIC OF ROTARY MOTION TYPE OF ELECTROMAGNETIC ACTUATOR BASED ON FINITE ELEMENT ANALYSIS." Jurnal Teknologi 78, no. 9 (2016). http://dx.doi.org/10.11113/jt.v78.7161.
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This paper addresses a rotary motion type of electromagnetic actuator that compares two types of electromagnetic actuators; i.e the Permanent Magnet Switching Flux (PMSF) and the Switching Reluctance (SR) actuator. The Permanent Magnet Switching Flux (PMSF) actuator is the combination of permanent magnets (PM) and the Switching Reluctance (SR) actuator. The force optimizations are accomplished by manipulating the actuator parameters; i.e. (i) the poles ratio of the stator and rotor; (ii) the actuator’s size; (iii) the number of winding turns; and (iv) the air gap thickness between the stator and rotor through Finite Element Analysis Method (FEM) using the ANSYS Maxwell 3D software. The materials implemented in the actuator’s parameters optimizations are readily available materials, especially in Malaysia. The excitation current used in FEM analysis for both actuators was between 0A and 2A with interval of 0.25A. Based on the FEM analyses, the best result was achieved by the Permanent Magnet Switching Flux (PMSF) actuator. The PMSF actuator produced the largest magnetostatic thrust force (4.36kN) once the size is scaled up to 100% with the input current, 2A respectively. The maximum thrust force generated by the Switching Reluctance (SR) actuator was 168.85μN, which is significantly lower in compared to the results of the PMSF actuator.
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Wang, Shi Jie, Zhi Dan Weng, Bo Jin, and Hong Xu Cai. "Multi-objective genetic algorithm optimization of linear proportional solenoid actuator." Journal of the Brazilian Society of Mechanical Sciences and Engineering 43, no. 2 (2021). http://dx.doi.org/10.1007/s40430-020-02768-7.
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AbstractLinear proportional solenoid (LPS) is widely applied in different linear motion control systems as the electromagnetic actuator since its high reliability and low cost. LPS is difficult to optimize by changing a single variable due to amounts of structural design parameters, and each design parameter has a nonlinear relationship with the static electromagnetic force. This paper aims to improve LPS’s push force and response performance through magnetostatic finite element analysis (FEA) by ANSYS MAXWELL. This study compares FEA 2D model, 3D model and measurement results underrated coil current to verify the accuracy of FEA 2D model. In order to reveal the nonlinear relationship between shape design parameters and electromagnet design objectives, this study compares the influence degree of each variable on each design objective by conventional type LPS 2D FEA model. And for the purpose of improving LPS’s push force and response performance, a multi-objective optimization method has been proposed in this study based on genetic algorithm (GA) and magnetostatic FEA 2D model for optimizing the shape design parameters. All the study results were validated in both static conditions and dynamic conditions. The comparison between manufactured optimal type and conventional type results shows that the static push force in working stroke is improved 30.1%, displacement step response rise time is reduced 5.2% and 43.4%, and force step response rise time is reduced 20.5% and 44.6% with different return spring stiffness. Above all, LPS static and dynamic performance has been improved directly and the validation of proposed optimization method is verified in this paper.