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    • Ironless axial flux motor. To mitigate these thermal challenges .

  • Ironless axial flux motor To reduce the control complexity, a new structure of module poles with a combination of permanent magnet and soft magnetic material is proposed, which has be discussed in the context of the axial flux air core dual rotor rim drive for X-57 design case study. To mitigate these thermal challenges Ironless Axial Flux Wind Turbine Motor with Two Cylindrical Magnet Rings (PDF) Ironless Axial Flux Wind Turbine Motor with Two Cylindrical Magnet Rings | Jean-François Llibre - Academia. 9910802. Accurate Dec 8, 2016 · The Ironless Axial Flux Permanent Magnet (IAFPM) machine, also referred to as air-cored or coreless machine is a variant of the AFPM machine with the iron removed from the stator. To solve the problem of low air-gap flux density in the ironless disk-type PMSM, the armature windings adopts the single-layer concentrated windings, which effectively May 7, 2021 · an Ironless Axial Flux Permanent Magnet Motor Based on the Field Produced by a Single Magnet. pdf), Text File (. The results indicate that the interior PM axial flux motor has greater potential in electric vehicle drive system applications if the peak speed is lifted up. It has been discovered that axial flux generator is less costly [9]. 1941-1947, 10. These parameters include both geometrical and higher-order parameters, including pole count, rotor speed, current density, and geometries of the magnets, windings, and air gap. INTRODUCTION Applications such as aeronautics are seeking to use ironless-stator Axial Flux Permanent Magnet (AFPM) motor [1]. Permanent magnet machine topologies are generally classified as radial flux or axial flux In this paper, a single stator twin external rotors ironless AFPMSM for robot applications is studied. Oct 13, 2022 · This paper deals with the design and optimization of a 2. 1 MW rim-driven electric thruster for ship propulsion. A comparison of the results showed that the new motor had a better performance than the conventional axial-flux motor. Considering the limitation on increasing the switching frequency of high-power devices, a May 7, 2025 · Axial flux motors have gained widespread attention in the field of electric vehicles. Through this paper and some preliminary CAD design as well as a quick inventory of all of the motor controllers and bearings that I had already, I was able to define certain parameters needed to calculate the coil turns below. 1- Dec 1, 2024 · Coreless axial flux permanent magnet machines (C-AFPMMs) offer exceptional efficiency, power, and torque density by eliminating iron losses, making th… Dec 7, 2022 · Axial-flux permanent-magnet (AFPM) motors are a kind of important motor with compact structure, high power density and high torque density. González-Parada et al. Despite these advantages, AFPMMs face challenges such as demagnetization of permanent magnets and magnetic insulation layer failure under high-temperature conditions. The motor model in this paper is for dual rotor halbach array air core axial flux motors. Comparing the diameters of axial and radial motors reveals that axial motors have a cubic torque factor, whereas radial motors have a quadratic relationship %PDF-1. The torque windings and the suspension windings are integrated into a cohesive whole with the same pole number for both torque and radial force generation. Based on these analyses, the main findings of the review May 7, 2025 · Axial flux motors have gained widespread attention in the field of electric vehicles. F. ; Lefevre, Y. The stator may exert a unilateral axial force on the dual rotors under uneven air gaps. A Jun 19, 2019 · This paper proposes a two-phase dual-stator axial-flux permanent magnet brushless dc motor with an ironless rotor for higher torque per magnet volume using the only-pull drive technique. Keywords Axial flux motor, Magnetic field, additive manufacturing, Permanent Magnet, ironless I. Apr 8, 2025 · The base motor design is based on my last axial flux motor so I began modifying that in order for it to fit a gearbox. Our distinction is the extensive time and energy spent in the innovative solutions that are designed to help the clients meet their performance and efficiency goals while reducing the environmental impact. 1109/ICEM51905. This combination of design features allows for an extremely high efficiency motor or generator with good specific power. The results indicate that the motor with a Halbach-array PM rotor exhibits approximately 28% higher Jul 26, 2024 · The electromagnetic performance comparison between interior PM axial flux motors and surface-mounted PM axial flux motors is introduced in [23,24,25,26,27]. be/6SLDtmHKLFI Here is a video to explain:What axial flux motors are and ho Mar 20, 2023 · 3D Magnetic Field Model of a Permanent Magnet Ironless Axial Flux Motor with Additively Manufactured Non-Active Parts. Nov 13, 2024 · Axial Flux Permanent Magnet Motors (AFPMM), known for their high power density, energy efficiency, and compact design, hold great potential for widespread use in electric vehicle applications. Considering the limitation on increasing the switching frequency of high Feb 25, 2021 · Ironless stator axial-flux permanent magnet (PM) machines are becoming a promising choice in aerospace and automotive applications. In this article, an analytical model of an ironless axial flux permanent magnet machine (AFPM) is proposed for electromagnetic force calculation. Reducing no-load momentum of the generator has been possible using skewed magnets in axial flux permanent magnet [10]. University of Arkansas Simulations were continued through comparing the motors in terms of air-gap flux density, torque, and back electromotive force using the transient finite element method. Bonnet, M. Hot on the heels of the excellent podcast with the team from Magnax https://youtu. A Halbach array motor was designed and 3D Index Terms—Axial Flux Permanent Magnet, Ironless, Torque, Bio-Savart’s law, Lorentz force law I. However, it still requires great effort to design an AFPM motor with higher torque density and lower torque ripple. May 1, 2023 · In this article, the stator cooling system of an axial-flux permanent-magnet (PM) motor with an integer-slot distributed winding (ISDW) for high-speed, high-power electric vehicle traction applications is discussed. Compared to traditional radial flux motors, it has shorter magnetic paths, higher torque output, and better cooling performance. Our electric motors and generators are an axial flux (“pancake”) design based on dual-halbach-array magnet rotors and ironless stators. Apr 8, 2025 · Design and Test of an Ironless Axial Flux Permanent Magnet Machine using Halbach Array. The generators are compared for five different power generation levels from 250 W to 10KW at different rotational speeds from 1000 revolutions per min The Power of Axial Flux Technology . The analytical model of the selected AFPM motor is presented. hal-03843873 Jan 30, 2018 · This paper presents integrated design and analysis of a new axial-flux permanent magnet (AFPM) machine, which consists of an ironless stator with double-layer concentrated non-overlapping windings Sep 10, 2017 · In order to avoid the unsafe operation and raise efficiency of yokeless and segmented armature axial flux motors at high speed, the control current of air gap flux is expected to be as small as possible with the same field-weakening effect. This combination of design features allows for an extremely high efficiency motor or generator with good specific power and excellent high-speed efficiency. Multi-stack axial flux permanent magnet generator (AFPM) for a hybrid electric vehicle which can be controlled with sensors despite the compound structure is Nov 12, 2015 · Axial-flux ironless stator PM motors are becoming a promising choice for aero applications due to their advantages of light weight, strong overload capacity, high efficiency and high reliability. It was chosen as a candidate motor since there will be no iron loss; the Halbach array concentrates the flux density well within the air gap, which increases torque; and there is a possibility industrial servos [13]. This paper reviews the progress of AFPM technology that has been made in recent years, especially for electric vehicle (EV) propulsions, with respect to the potential AFPM topologies, design Dec 4, 2024 · AXF225 Axial Flux Motor: This motor weighs just 13 kg and delivers 220 kW peak power. 15, No. 5 and 104 kW, respectively, with rated and peak rotational speeds of 1800 rpm. Aug 31, 2019 · A simulation model of an ironless Axial-Flux Permanent-Magnet (AFPM) machines is presented. ; Llibre, J. The proposed AFPM motor had rated and peak output powers of 75. The fundamental structure and the working principle of the presented ironless-stator SBAFPM motor with ironless stator Nov 25, 2021 · Axial-flux (AF) permanent-magnet (PM) (AFPM) machine is a competent candidate for electric propulsion applications owing to its high power density, high efficiency and effective volume utilization. This was quite challenging to figure out initially because the cycloid geometry is fully defined off of parametric equations. To achieve a high torque, a Dec 7, 2024 · The axial flux motor is known for its high power density, compact size, and fast response. Mar 24, 2024 · As an ongoing development to the employees, Axial Flux motors have been used as motors for rotating the propeller blades to provide linear thrust proving to be extraordinarily efficient. : FEASIBILITY OF A NEW IRONLESS-STATOR AXIAL FLUX PERMANENT MAGNET MACHINE FOR AIRCRAFT 31 ELECTRIC PROPULSION APPLICATION . Axial flux motors are flatter, often called pancake motors. And the vibration of the machine is analyzed combined with the electromagnetic force and modal shape. The performance of two coreless axial flux PM machines, one with a Halbach array and the other with a spoke-type PM rotor, were designed and compared for indirect drive in-wheel motors of unmanned ground vehicles in [9]. However, they come with the characteristic of extremely small armature inductance, which will result in a challenging difficulty to drive with the conventional inverter. edu Academia. 2022. The output power equation (P Mar 5, 2025 · 3-D Analytical Model of Armature Reaction Field Calculation for Ironless Axial Flux Permanent Maanet Motor 无铁心轴向磁通永磁电机电枢反应场计算的三维解析模型 相关领域 Apr 8, 2024 · 3D animation: the structure and working principle of the axial flux motor Axial flux motors have gained widespread attention in the field of electric vehicles. The design method of the motor is proposed. Because of the components (especially the coil layout) within a radial flux motor, it is much longer than an axial flux motor. In addition, the torque density of the new structure was higher than that of the conventional motor due to the equal outer diameter of the two motors and the Apr 29, 2021 · 3D printing has shown much promise as a method of rapidly manufacturing lightweight ironless motors to meet the growing demand that airlines have for more cost-effective products that reduce emissions and flight prices. 12 Multi-Disk Coreless Axial Flux Permanent Magnet Synchronous Motors with Surface PM and Halbach Array Rotors for Electric Aircraft Propulsion Jan 1, 2017 · Here it has been found that after a comparison of axial and radial flux permanent magnet generator, axial flux permanent magnet has shown the best result. For this purpose, a double stator ironless rotor axial flux permanent magnet (AFPM) motor is considered as the propulsion motor. 2022 International Conference on Electrical Machines (ICEM), Sep 2022, Valencia, Spain. Ironless Axial Flux Wind Turbine Motor with Two Cylindrical Magnet Rings. General representation of the electric motors in radial and axial flux configuration. / Procedia Engineering 35 ( 2012 ) 4 – 13 Fig. In this paper, a stator coreless multidisc AFPM (SCM-AFPM) motor with a three-rotor Dec 7, 2022 · Axial-flux permanent-magnet (AFPM) motors are a kind of important motor with compact structure, high power density and high torque density. pp. 2. The unbalanced magnetic pull can influence the production and processing of the motor, leading to issues such as vibrations, bearing degradation, reduced lifespan, and torque reduction attributed to the bearings. 5 %âãÏÓ 1198 0 obj > endobj 1208 0 obj >/Filter/FlateDecode/ID[97B19B1B6BB0594BA198E417B3E757EF>]/Index[1198 26]/Info 1197 0 R/Length 72/Prev 1631354/Root Our electric motors and generators are an axial-flux (“pancake”) design based on dual-Halbach-array magnet rotors and ironless stators. It Dec 1, 2016 · The Ironless Axial Flux Permanent Magnet (IAFPM) machine, also referred to as air-cored or coreless machine is a variant of the AFPM machine with the iron removed from the stator. However, it comes with extremely small inductance resulting in a challenging difficulty to the inverter that drives the motors. The advantage of the ironless rotor is that it reduces magnet volume by providing an effective flux linkage, while the only-pull drive technique, which involves only the pull process, benefits from the use of Aug 1, 2019 · The Lorentz force law is proposed as an alternative to the Maxwell stress tensor to calculate the torque of an ironless Axial Flux Permanent Magnet motor. Ironless Axial Flux Motor May 7, 2021 · The Lorentz force law is proposed as an alternative to the Maxwell stress tensor to calculate the torque of an ironless axial flux permanent magnet (AFPM) motor. Vaionic is specialized in the design and development of modular ironless PSMs and power electronics that deliver a perfect combination of performance, efficiency and sustainability. In most of the new more electric aircraft applications, BLDC motor needs to be driven from 300 or 600 Vdc bus. . A model of this magnetic field based on the field produced by one magnet, the superposition principle, and geometric transformations is proposed. Thanks to new manufacturing processes such as 3D printing it is possible to open new markets for AFPM motors high specific power. IEEE T ransactions on Magnetics, Institute of Electrical and Electronics Engineers, 2021, 57 (7), pp. Dec 20, 2023 · A dual-rotor yokeless and segmented armature (YASA)-type axial-flux permanent magnet (AFPM) motor with a surface-mounted permanent magnet (SPM) array type was developed for urban air mobility (UAM) aircraft in this work. , BMW i3 motor), showcasing the significant advantages of the magnetless design in high power density and light weight. g. Next I had to start work on the design of the cycloidal gearbox system itself. The purpose of this article is to show that for any operating point of the motor, the torque can be calculated from the distribution of the axial Oct 20, 2020 · According to the results, the new motor had a higher air-gap flux density, a higher Back-EMF, a lower harmonic, and a higher torque than the axial-flux conventional permanent-magnet motor. One of the motor designs chosen for study is an axial flux double-Halbach array permanent-magnet (PM) ironless motor, which will be described in this paper. In this review, the progress of AFPM motors and their key technologies are analyzed and described, with emphasis on the topological structures, design and optimization methods and control techniques. Indeed as accurate analytical methods do not yet exist for ironless AFPM, 3D Finite Element Analysis (FEA) is required at each time of an operating point. Oct 14, 2022 · These consist of a single-gap slotted axial field machine, a dual-gap slotted axial flux generator, a single-gap slot-less axial flux generator, and a dual-gap slot-less axial flux generator. edu no longer supports Internet Explorer. To facilitate comprehensive research on AFPMSM, this article reviews the developments in the research on the design and control optimization of Jan 3, 2012 · Axial flux BLDC motors, in general, and ironless axial flux BLDC motors, in particular, come with very low inductance Owing to this, they need special care to limit the magnitude of ripple current in motor winding. Initially, the principle and general calculation methods of the quasi-3D analysis was introduced to analyze electromagnetic performances of Apr 3, 2023 · Axial flux permanent magnet synchronous motors (AFPMSMs) have been widely used in wind-power generation, electric vehicles, aircraft, and other renewable-energy applications owing to their high power density, operating efficiency, and integrability. The unbalanced magnetic pu Mar 22, 2024 · Vibration is a challenging issue during the design process of electric machines. Jun 19, 2019 · This paper proposes a two-phase dual stator axial flux (DSAF) permanent magnet (PM) brushless DC (BLDC) motor with an ironless rotor for higher torque per magnet volume using the only-pull drive Jul 22, 2016 · Advancements in axial flux permanent magnet machines utilizing coreless technology: A systematic review 1 Dec 2024 | Ain Shams Engineering Journal, Vol. We believe that Axial Flux technology is the future of electric propulsion. Jun 30, 2022 · The stator coreless axial flux permanent magnet (AFPM) motor with a compact structure, low torque ripple, and high efficiency is particularly suitable as a motor for electric propulsion systems. The magnetic circuit calculation and the main motor size equations are obtained. The drawback to the ironless motor is a typically low airgap magnetic flux density, and high current ripple resulting from the use of traditional PWM electric drives to low inductance machines such as those without iron cores [14]. This allows the efficiency and power density of the machine to be further improved [1]-[4]. This alternative allows calculating only an Ironless Axial Flux Permanent Magnet Motor Based on the Field Produced by a Single Magnet. Our motor expertise is combined in a newly developed axial-flux motor, which is characterized by its light weight, simple design, compact size, economical use of active materials and yet high power density. txt) or read online for free. INTRODUCTION In recent years, a new type of electric motor has emerged: the Axial Flux Permanent-Magnet (AFPM) motor. The aim of this research is to quantitatively figure out the power/power density boundaries of this type of axial field PM motor with the adoption of the proposed oil-immersed Mar 22, 2025 · In this paper, to address the time costs associated with three-dimensional (3D) analysis for permanent magnet eddy current loss (PMECL) of axial flux permanent magnet synchronous motors (AFPMs), an analysis method utilizing quasi-3D analysis is proposed. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2021, 57 (7), pp. The peak torque and weight are equivalent to the HSM radial motor three times its size (e. This alternative allows calculating only the magnetic field produced by the magnets. Because this motor topology is air core and halbach arrays are used on the rotor, there is no nonlinearity in the system and simple 6 A. Ironless Axial Flux Motor - Free download as PDF File (. In this review, the progress of AFPM motors and their ZHANG et al. However, IAFPM motors generally have very low inductance (<; 50μH) due to their ironless nature [5], which increases the An axial flux motor (axial gap motor, or pancake motor) is a geometry of electric motor construction where the gap between the rotor and stator, and therefore the direction of magnetic flux between the two, is aligned parallel with the axis of rotation, rather than radially as with the concentric cylindrical geometry of the more common radial Feb 3, 2016 · In this paper, a new type of self-bearing axial flux permanent magnet (SBAFPM) motor with ironless stator is proposed. The magnetic field in the AFPM machine is calculated using the 3D magnetic charge concept in Jul 25, 2016 · This effort aims to identify design parameters that affect power density and efficiency for a double-Halbach array permanent-magnet ironless axial flux motor configuration. 3D-printed ironless, axial flux, electric BLDC motors would meet these needs with both their high efficiency and power density. The stator would be 3D printed with PETG and the rotors milled out of aluminium. 1- Sep 1, 2024 · In contrast, axial flux machines are more commonly applied in EVs, where both space and mass are critical factors, as axial engines offer superior performance for these specific parameters. Electric Motor Vaionic has developed a new type of motor that eliminates magnetic material in the stator: the ironless axial flux machine, or iPSM -stator ironless PSM. Nov 15, 2024 · Radial flux motors are the most used motor today in vehicles and equipment. Firstly, the causes of the machine vibration are analyzed based on Feb 6, 2019 · Axial flux was chosen to facilitate easier manufacturing on a 3-axis mill and to shorten the flux path which is critical since the motor will be ironless. The cylindrical rotor moves inside a cylindrical stator. much academic and industrial attention to the high due This first step through the 3D printing technology is simplified by the use of cylindrical magnets and plastic mechanical supports. vgdhza wbet nqunbp aodil jtum nsvv roh ezjg wnye tbrf