axial flux magnetic gear

This paper starts by discussing the possible structures of the axial flux permanent magnet low-speed The magnetic flux must be confined in the limits of the axial width. Axial flux coreless low start low RPM 3-phase AC permanent magnet generator 50W-10kW Magnetic Generator Product Description GreeF company supply modified kinds of Coreless Disk Permanent Magnet Generator. By real-time changing the numbers of permanent magnet (PM) pole-pairs in the input and output rotors, the gear ratio becomes controllable. identiﬁed that the magnetic gears can oﬀer various morphologies such as the axial-ﬁeld morphology [14] andlinear-ﬁeldmorphology[15]. Peak torque was increased 16% to 255 Nm yet with a weight of only 23.5 kg. Axial Field Magnetic Gear in 3D. 2.1. High Performance Axial Flux Permanent Magnet Synchronous Motor for High Speed Applications Neethu S. 1, Saumitra Pal 2, A K Wankhede 2 and B.G. 3 Coaxial magnetic gear Fig. The flux paths are much shorter. This paper presents a new non-rare-earth axial-field magnetic variable gear (MVG). College:Faculty of Electrical and Computer Engineering . The resistance of … As axial flux permanent magnet (AFPM) machines are currently the most appropriate topologies for limited axial space applications, a novel axial flux magnetically geared permanent magnet (AFMGPM) machine is investigated in this thesis. This axial flux magnetically-geared motor is unique in that the stator shares the high-speed rotor with the magnetic gear, so there is no need for a separate rotor. Abstract:The performances of three types of magnetic gears (MGs), which are radial-flux MGs, transverse-flux MGs, and axial-flux MGs, are quantitatively analyzed and compared using 3-D finite-element method of magnetic field and mechanical motion coupled computation. It is also apparent that the magnetic flux density is greater in the vicinity between the magnetic poles. A. From China. INTRODUCTION Axial ﬂux permanent magnet (AFPM) machines are ac- claimed for their high efﬁciency, torque density, and compact structure. Different topologies with 1-4 layers of permanent magnet mounted on acrylic discs are tested at 0-2400 rpm. axial flux motors is branched according to their type of construction Figure 3 [2]. As opposed to conventional hard contact backlash in a spur gear, where a gear may rotate freely until in contact with the next gear, the magnetic gear has a springy backlash. Application ID: 22301. To study the accuracy of the proposed axial magnetic-gear for different load conditions, measurement data obtained between axial magnetic gear and direct drive are compared. Both the high speed and low speed rotors consist of permanent magnet and back iron. 2.2 Magnetic Gearbox History 12 2.2.1 Radial Magnetic Gearbox 13 2.2.2 Axial Magnetic Gearbox 17 CHAPTER 3: METHOD 19 3.1 Magnetic Gear Design 19 3.2 Radial Flux Magnetic Gear Prototypes 23 3.3 Axial Flux Magnetic Gearbox Prototypes 26 3.4 Mechanical Gearbox Analysis 26 3.4.1 Tooth Profiles 28 3.4.2 Planetary Gearbox Design 29 The induced voltages of the studied axial flux generator is a sinusoidal signal with the following characteristics: Amplitude=37 V, Frequency =120 Hz. SA Afsari, H Heydari, B Dianati. The gear ratio. First, the differences between the topologies of the two types of machines are explained, and a theoretical comparison of the possible power densities is carried out. B. Anvari, Y. Li, and H.A. Global behavior is expected to be constrained by magnetic This report compares axial flux and radial flux machines for the use in wheel hub drives in terms of their electromagnetic and thermal properties. The magnetic flux density distribution at a rotation speed of 1,000 r/min is shown in Fig. New advancements in SMC materials allow for the design freedom needed to create compact, efficient e-motor systems. Magnetic ﬂux-rope dynamics in plasmas can be interpreted geometrically with images of twists, writhes and links transferred across individual reconnecting ﬂux tubes [1–4]. A. rStructure of the Magnetic Gear The magnetic gear structure is shown in Fig. SMCs allow e-motor manufacturers to make complete use of design space to maximize torque and power requirements. The use of a permanent magnet on this flux axial generator, in order to produce a magnetic field in the air gap A year ago, it upgraded the performance of its M21S5 motor. magnetic gear by investigating its characteristic and potential application in the industrial field. Unlike the concentric topology, this one features an axial flux in the pole pieces, as shown in Fig. CA2549882A1 CA 2549882 CA2549882A CA2549882A1 CA 2549882 A1 CA2549882 A1 CA 2549882A1 CA 2549882 CA2549882 CA 2549882 CA 2549882 A CA2549882 A CA 2549882A CA 2549882 A1 CA2549882 A1 CA 2549882A1 Authority CA Canada Prior art keywords rotor stator poles disc pole Prior art date 2006-06-12 Legal status (The legal status is an assumption and is not a legal … IEEE Transactions on Magnetics 51 (9), 1-11, 2015. As shown in Fig. The key is to bury all PMs with the Fig. Compare it to a lever: One can generate more torque with a longer moment arm. WINDPMG400 12V/24V/48V Low RPM Axial Flux Permanent Magnet Generator Alternator. This team has just completed the construction of its 2nd generation axial flux cycloid gear. 2. An axial-flux magnetic gear (MG) is integrated into a radial field stator to construct a unique magnetically geared generator for low input speed applications. A concentric magnetic gear consists of three concentric rotors: a sun gear, a modulator, and a ring gear. application to date. Buy It Now. Abstract. فارسی. One way of avoiding a large diameter is to stack a number of axial-flux machines with a small diameter on the same shaft. 2 Parallel-axis magnetic gear: (a) radial-cou-pling; (b) axial-coupling Fig. In this model, an axial field magnetic gear with a gear ratio of 5:2 is modeled. $300.00 to $500.00. The middle rotor has been changed to a new single-layer structure. 1 and an exploded view is given in Fig. This makes the design mechanically less complex. This paper proposes modelling and optimization of a new reluctance axial flux magnetic gear (RAMG) with stationary outer rotor and advantages of lower permanent magnet usage. The magnetic gear can regulate torque and speed as desired. This paper proposes the electromagnetic modeling, prototype realization and test validation of a new triple-speed coaxial magnetic gear (TSCMG) for high torque/volume applications. The torque density characteristics for an axial flux magnetic gear using a flux-focusing topology is experimentally studied when using neodymium iron boron (NdFeB) rare-earth magnets. Axial flux Magnetic gears are surprisingly unknown and used only in a few niche applications. However, for AMGs, magnetic flux lines are created parallel to the rotor axis. In this blog post, we will present examples for these three types of magnetic gears using Multiphysics. The coaxial magnetic gear consists of three concentric rotors with different pole pairs, as shown in the figure below. In Axial Flux (AF) machines, the magnetic flux in the air gap flows in the axial direction and the conductors are positioned radially. If you are interested in strong magnets used in Axial Flux Motor, we would like to recommend you to visit Stanford Magnets for more information. As a leading magnet supplier across the world, Stanford Magnets has been involved in R&D, manufacturing, and sales of various magnets since the 1990s. Department:Electrical Engineering - Power . In analyzing the two design types, an axial flux PMG was chosen as our final design choice for reasons of simplicity, ease of manufacturing and cost of materials. As described above, in an axial flux PMG, there is a rotor mounted with a ring of magnets. Afterward, a continuously variable magnetic gear was established by changing the inner rotor structure. The stator is mounted outside the axial flux magnetic gear. Figure 1. Brand New. p. L) and the number of modulation pieces. 40% … from the first magnet, through one core and direct on the other magnet. Examples include balanced motor-stator attractive forces, better heat removal configuration, and adjustable air gap. The proposed magnetic-geared motor consists of an axial-gap permanent magnet (PM) motor and magnetic gear, which are mechanically combined. 4 Halbach magnetic gear This paper presents a flux-modulated direct drive (FMDD) motor. Answer: axial flux motors are AC machines. Abstract: This paper investigates a novel design of the axial flux-type magnetic gears that adopts L-type ferromagnetic pole pieces and spoke-type ferrite magnet arrangement. A concentric magnetic gear consists of three concentric rotors: a sun gear, a modulator, and a ring gear. To fairly compare the torque capability of different topologies of MGs, all the MGs under study have the same gear ratio, … 1 Involute SmCo magnetic gear Fig. Two models with the same power but different radial and axial sizes were optimized using response surface methodology. In this paper, the design of a concentric magnetic gear for a NASA personal-air-transport reference vehicle is presented to demonstrate the feasibility of a magnetic gear for aerospace applications. This makes the design mechanically less complex. The main reasons why axial flux topologies are better by design are: Higher torque due to a larger distance between the magnetic field interaction and the machine shaft/axis, with an equal outside diameter of the machine. Both models employed a Halbach array to increase torque. Consequently, the diameter of the axial-flux machine cannot be reduced as much as that of the radial-flux machine. Abstract: This paper presents a comparison of two variants of an axial flux magnetic gear (AFMG), namely, with integer and fractional gear ratios. Atallah and colleagues 15,16 developed high-performance linear magnetic gear and a high-performance axial-field magnetic gears that supplement the FMMG topology. Both the high speed and low speed rotors consist of permanent magnet and back iron. Diﬀerent magnetic gears: (a) coaxial magnetic gear; (b) magnetic gear with tangentially-magnetized PMs; (c) interior-magnet outer-rotor concentric magnetic gear; (d) Halbach magnetic gear. Assistant Professor . The transverse flux motor for a direct drive application showcases these results against conventional motors: 20% higher peak torque. axial length like fans, compressors, etc. The stator is positioned adjacent to the rotor such that an axial airgap is defined between the rotor and the stator. between concentric magnetic gear mass and efficiency. When metal is … The prototype of this generator is construct and test in laboratory where the results consisting terminal voltage, phase current, torque, power and … magnetic circuit of a 3-phase axial flux machine with permanent magnets located on the rotor. As a result, axial flux machines have fewer magnetic losses … (or couplers) are used to transmit torque from a primary driver to a secondary follower without any mechanical Comparison of axial-flux and radial-flux-machines for use in wheel-hub-drives Dipl.-Ing. (1) It employs two air gaps, and (2) the central structure must be laminated and sustain torques equal to the sum of those on the high and low speed shafts. Based on calculations derived with the use of three-dimensional numerical models, the torque characteristics of the analyzed AFMGs are computed and verified on a … Fluxes - (211 companies) Fluxes are chemical agents used for cleaning, purification, and improving flow, and are common components of metal joining processes such as soldering, brazing, and welding. Analysis and Calculation of Axial Magnetic Force As can be seen from Fig. centric magnetic gear topology as shown in Figure 6 [Liu et al., 2009]. 6+ watchers. First and second non-parallel rotor shafts are respectively collinear with the stator axis and the rotor axis. Both the high speed and low speed rotors consist of permanent magnet and back iron. Despite adding a forward ratio and a compact axial-flux motor, nesting the twin clutches and deleting the reverse gear (the electric motor just turns … between concentric magnetic gear mass and efficiency. It can be divided into two types: axial flux motor and radial flux motor, according to the direction of the magnetic field. The calculated axial magnetic flux density in a radial length of 90.5 mm, along the z axis is presented in Figure 8. This design not only decreases flux leakage but also improves torque density. The world’s first motor, invented by Michael Faraday in 1821, belongs to the axial flux type. The proposed AFMG machine has the merits of simple structure and improved torque density by combining a magnetic gear … Particular ... solutions, usually require the use of a mechanical gear. The proposed magnetic gear is comprised of three rotors: inner rotor, middle rotor and outer rotor. q. m [3]. magnetic gear by investigating its characteristic and potential application in the industrial field. Axial flux motors benefit from the 3D isotropic material characteristics of soft magnetic composites (SMCs). Acc. Two weaknesses are inherent to the operating principle. In analyzing the two design types, an axial flux PMG was chosen as our final design choice for reasons of simplicity, ease of manufacturing and cost of materials. Though axial flux motor came out earlier, its further development was limited by the material and technological level at that time. Design of an axial flux machine for an in-wheel motor application Master of Science Thesis ... mum rated torque (≈80 Nm) for proposed values of magnetic ﬂux and current densities (1.7 T and 7 A/mm2). It can be rapidly tailored to meet your exact specification between 65mm to 425mm in diameter, and the electric motor can be stacked to meet the power requirement from 50W up to 56kW. The output power equation is analytically derived. The axial width of the model is approximately 50 mm. Based on calculations derived with the use of three-dimensional numerical models, the torque characteristics of the analyzed AFMGs are computed and verified on a physical model. The low speed rotor consists of five pole-pairs, while the high speed rotor consists of two pole pairs, and the stationary steel consists of … G. r. of the magnetic gear is a function of the number of pole pairs on the high-and low-speed rotors (p. H. and. Afterward, a continuously variable magnetic gear was established by changing the inner rotor structure. Products/Services for Halbach Motor Axial Fluxes. Hence, the proposed FMDD motor can achieve the low-speed high-torque output and high-speed compact design requirements as well as high-torque density with a simple structure. For the sake of cost saving, an existing six-pole axial ﬂux stator shown in Fig.4 is utilized. Concentric Magnetic Gears The concept of the concentric magnetic gear (CMG) was first proposed in 2004 (Ref 21). Axial flux motor provides high torque and low motor shaft speeds that eliminate the need for expensive gear boxes in many applications. Figure 13 shows the flux linkage results versus rotor angle. The company focuses continually on improving the design and performance of its permanent magnet axial flux motor technology. Axial flux permanent magnet (AFPM) machines have desirable advantageous performance for industry applications since they have prominent features of high torque density, short axial length, and compact design, among others [].Recently, axial flux magnetically geared machines, in which axial magnetic gears are combined with PM machines, have been proposed and … axial flux generator, also known as a pancake generator, the rotor is a flat disk of magnets which rotates on a shaft above a flat ring of stator coils. High-Torque Direct-Drive Machine with Combined Axial- and Radial-ﬂux Out-runner Vernier Permanent Magnet Motor Lei Zhou ∗, Feng Guo †, Hongyu Wang ‡ and Bingnan Wang § ∗Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA. Google Scholar. The simplest axial magnetic gearboxes consist of two disks each containing alternating positive and negative magnets with a modulator disk in between. Conversely, the radial flux motor which invented by … I. Nomenclature = magnetic flux density = magnet axial lamination size 1 It allowed to create an analytical dependences of the inductances and flux linkages. 50w 100w 200w 500w Low Rpm Axial Flux Coreless Permanent Magnet Generator For Vertical Wind Turbine , Find Complete Details about 50w 100w 200w 500w Low Rpm Axial Flux Coreless Permanent Magnet Generator For Vertical Wind Turbine,500w Permanent Magnet Generator,Low Rpm Axial Flux Coreless Permanent Magnet Generator,Generator For Vertical Wind Turbine from Supplier or … The researches about magnetic gear characteristics, for example, investigates torque, torque density, torque ripple, flux density, eddy current, pole piece … The proposed AFMG machine has the merits of simple structure and improved torque density by combining a magnetic gear … The stator is mounted outside the axial flux magnetic gear. This paper presents the electromagnetic and mechanical analysis of an axial flux permanent magnet (AFPM) motor for high speed (12000 rpm) rotor which is vertically suspended by magnetic bearings. It is shown that an axial-flux permanent-magnet machine with one-rotor-two-stators configuration has generally a weaker efficiency than a radial-flux permanent-magnet machine if for all designs the same electric loading, air-gap flux density and current density have been applied. Types of Magnetic Gears – Based on their operations, magnetic gears can be classified into three types: linear magnetic gears (LMGs), coaxial magnetic gears (CMGs), and axial magnetic gears (AMGs). Optimal Design and Analysis of a Novel Reluctance Axial Flux Magnetic Gear; S.Ahmadreza Afsari Kashani . In the analysis, a prototype AFPM motor with a double-sided rotor and a … The air gap of axial flux motor is planar, and its air gap magnetic field distribution along the axial direction, that is, the air gap magnetic field is perpendicular to the air gap plane. The current development trend of the motor is high speed, low weight and high efficiency, and the axial flux motor is regarded again under this circumstance. A wide variety of axial flux magnet motor options are available to you, such as boat, car, and electric bicycle. Magnetic Equivalent Circuit Modeling of an Axial-Field Magnetic Gear 171 Fig. 3 Axial flux density in the high-speed rotor air-gap: p l = 23 and p h = 4. where ϕ is the loop flux vector, φ is the branch flux vector, is the reluctance element matrix and F(θ) is Concentric Magnetic Gears The concept of the concentric magnetic gear (CMG) was first proposed in 2004 (Ref 21). An axial cross-section of a CMG is depicted in Figure 2. 1 Introduction. which method of construction and analysis of axial flux PM generator consisting soft magnetic composite/steel stator core is described. Abstract - This paper proposes an axial flux magnetically geared (AFMG) permanent magnet (PM) machine for power split application in hybrid electric vehicles (HEVs). This paper presents a comparison of two variants of an axial flux magnetic gear (AFMG), namely, with integer and fractional gear ratios. The axial gap motor has magnetic flux density distribution in the rotor coil’s rotation axis direction because of its structure. The high speed and low speed rotors use a flux-focusing typology. 1b). The … Abstract - This paper proposes an axial flux magnetically geared (AFMG) permanent magnet (PM) machine for power split application in hybrid electric vehicles (HEVs).