IEEE Organizations related to Magnetic Gears

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Conferences related to Magnetic Gears

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2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)

Energy conversion and conditioning technologies, power electronics, adjustable speed drives and their applications, power electronics for smarter grid, energy efficiency,technologies for sustainable energy systems, converters and power supplies


2020 IEEE Industry Applications Society Annual Meeting

The Annual Meeting is a gathering of experts who work and conduct research in the industrial applications of electrical systems.


2020 IEEE International Conference on Industrial Technology (ICIT)

ICIT focuses on industrial and manufacturing applications of electronics, controls, communications, instrumentation, and computational intelligence.


2020 IEEE International Magnetic Conference (INTERMAG)

INTERMAG is the premier conference on all aspects of applied magnetism and provides a range of oral and poster presentations, invited talks and symposia, a tutorial session, and exhibits reviewing the latest developments in magnetism.


2020 IEEE Power & Energy Society General Meeting (PESGM)

The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more


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Periodicals related to Magnetic Gears

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No periodicals are currently tagged "Magnetic Gears"


Most published Xplore authors for Magnetic Gears

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Xplore Articles related to Magnetic Gears

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Analysis of Flux Density Harmonic Spectrum of the Coaxial Magnetic Gear

2019 16th Conference on Electrical Machines, Drives and Power Systems (ELMA), 2019

The harmonic spectrum of the magnetic flux density is essential for torque interaction and efficiency of magnetic gears. In this paper a design of coaxial magnetic gear has been modeled in order to estimate the magnetic flux density harmonic spectrum of in the air-gaps, magnets, rotors and in the modulating steel segments. A time dependent Finite Element Method model of ...


Kinematic and Dynamic Analysis of Magnetic Gear With Dual-Mechanical Port Using Block Diagrams

IEEE Transactions on Magnetics, 2018

Magnetic gears with dual-mechanical port have several attractive features, such as reduced maintenance requirements and inherent overload protection, as compared with mechanical gears. However, it is difficult to obtain an intuitive analytical model because of its complicated magnetic flux interaction, and the dual-port transmission of this magnetic gear is rarely discussed. These difficulties actually limit the practical applications and increase ...


Torque Characteristic Analysis of Coaxial Magnetic Gear According to Fillet Parameter of Pole Piece

2018 21st International Conference on Electrical Machines and Systems (ICEMS), 2018

Coaxial magnetic gears have the advantages of high efficiency and high reliability. However, when these magnetic gears operate, a torque ripple is generated because of the difference in magnetic resistance between the pole piece and the air. The torque ripple causes noise and vibration on the coaxial magnetic gear; therefore, it must be minimized during the design process. In this ...


A Reluctance Magnetic Gear for High Speed and Vibration Motor Systems

2018 25th International Conference on Mechatronics and Machine Vision in Practice (M2VIP), 2018

This paper proposes a reluctance magnetic gear for high speed and vibration rotational situations. This novel magnetic gear adopts a structure with two non-magnetic rotors and one magnetic stator based on the reluctance modulation effect. The rotors are made of silicon iron, which makes the magnetic gear stable and reliable at high rotational speed in motor systems. By applying a ...


Eddy Current Losses of Coaxial Magnetic Gears

2018 XIII International Conference on Electrical Machines (ICEM), 2018

Reduction of eddy current losses is essential for magnetic gears efficiency enhancement. These losses are resulting in output torque reduction, especially in high rotational speeds and high gear ratios. In this paper, we developed an approach for determination of the eddy current losses of a coaxial magnetic gear. A time dependent two dimensional finite element model has been utilized. Permanent ...


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Educational Resources on Magnetic Gears

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IEEE.tv Videos

IEEE Magnetics Distinguished Lecture - Mitsuteru Inoue
Perpendicular magnetic anisotropy: From ultralow power spintronics to cancer therapy
A Discussion on Hard Drives
Magnetic Nanowires: Revolutionizing Hard Drives, RAM, and Cancer Treatment
Magnetic Materials and Magnetic Devices - Josep Fontcuberta: IEEE Magnetics Distinguished Lecture 2016
Spin Dynamics in Inhomogeneously Magnetized Systems - Teruo Ono: IEEE Magnetics Society Distinguished Lecture 2016
Magnetic Shield Implementation - EMC Society Demo
35 Years of Magnetic Heterostructures
High Magnetic Field Science and its Application in the US - ASC-2014 Plenary series - 10 of 13 - Friday 2014/8/15
IEEE Magnetics 2014 Distinguished Lectures - JONATHAN COKER
Magmites: Wireless Resonant Magnetic Microrobots
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 6 of 7 - A high sensitive magnetometer system for natural magnetic field measurements
Jaafar Elmirghani: Distinguished Experts Panel - TTM 2018
Synthetic Biology: Gene Editing’s Role in Diagnostics - Andrew Ellington - IEEE EMBS at NIH, 2019
IEEE Magnetics 2014 Distinguished Lectures - Tim St Pierre
ASC-2014 SQUIDs 50th Anniversary: 4 of 6 - Keiji Enpuku
IMS 2015: Robert H. Caverly - Aspects of Magnetic Resonance Imaging
Towards Logic-in-Memory circuits using 3D-integrated Nanomagnetic Logic - Fabrizio Riente: 2016 International Conference on Rebooting Computing
Nanoscale Magnetism with Picosecond Time Resolution and High Sensitivity - Hendrik Ohldag - IEEE Magnetics Distinguished Lecture
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 5 of 7 - SQUID Instrumentation for Early Cancer Diagnostics

IEEE-USA E-Books

  • Analysis of Flux Density Harmonic Spectrum of the Coaxial Magnetic Gear

    The harmonic spectrum of the magnetic flux density is essential for torque interaction and efficiency of magnetic gears. In this paper a design of coaxial magnetic gear has been modeled in order to estimate the magnetic flux density harmonic spectrum of in the air-gaps, magnets, rotors and in the modulating steel segments. A time dependent Finite Element Method model of the coaxial magnetic gear has been implemented. The model simulations are carried out by Ansys-Maxwell package. The flux density harmonic spectrum depending on rotor's relative positions and rotational angle has been calculated and analysed. The harmonic spectrum is implemented by Matlab software.

  • Kinematic and Dynamic Analysis of Magnetic Gear With Dual-Mechanical Port Using Block Diagrams

    Magnetic gears with dual-mechanical port have several attractive features, such as reduced maintenance requirements and inherent overload protection, as compared with mechanical gears. However, it is difficult to obtain an intuitive analytical model because of its complicated magnetic flux interaction, and the dual-port transmission of this magnetic gear is rarely discussed. These difficulties actually limit the practical applications and increase the control difficulty. Therefore, this paper develops a modeling approach based on the block diagram. Both of the kinematic and dynamic characteristics for a dual-port transmission can be obtained in one unified description. This control-based approach also provides more flexibility and convenience, facilitating further control applications. The feasibility will be verified by finite element analysis simulation and experimental results.

  • Torque Characteristic Analysis of Coaxial Magnetic Gear According to Fillet Parameter of Pole Piece

    Coaxial magnetic gears have the advantages of high efficiency and high reliability. However, when these magnetic gears operate, a torque ripple is generated because of the difference in magnetic resistance between the pole piece and the air. The torque ripple causes noise and vibration on the coaxial magnetic gear; therefore, it must be minimized during the design process. In this study, a pole piece with fillet was proposed to reduce torque ripple. Using a finite element analysis based on two-dimensional numerical analysis, the torque performances of the coaxial magnetic gears were compared and analyzed according to the fillet parameter value of the pole piece. Torque characteristics of magnetic gears were compared according to the various gear ratios, number of poles, and magnetic gear size. Then, the result shows that the effect of the parameters varies with the gear ratio of the magnetic gears.

  • A Reluctance Magnetic Gear for High Speed and Vibration Motor Systems

    This paper proposes a reluctance magnetic gear for high speed and vibration rotational situations. This novel magnetic gear adopts a structure with two non-magnetic rotors and one magnetic stator based on the reluctance modulation effect. The rotors are made of silicon iron, which makes the magnetic gear stable and reliable at high rotational speed in motor systems. By applying a 2D FEM simulation, the magnetic flux distributions of the air gap and torque transmission are analyzed. The results show that the proposed reluctance magnetic gear can offer a smoother torque transmission in high speed and vibration condition than the existing reluctance magnetic gear.

  • Eddy Current Losses of Coaxial Magnetic Gears

    Reduction of eddy current losses is essential for magnetic gears efficiency enhancement. These losses are resulting in output torque reduction, especially in high rotational speeds and high gear ratios. In this paper, we developed an approach for determination of the eddy current losses of a coaxial magnetic gear. A time dependent two dimensional finite element model has been utilized. Permanent magnets such as NdFeB, SmCo, Alnico and ferrite are used in order to evaluate the eddy currents and the torque transmission losses for a magnetic gear performance.

  • Design and Experimental Verification of a Regenerative Brake System with a Spiral Spring and Gears

    Energy regenerative systems consisting of a combustion engine and an electric motor are widely used mainly for automobiles. However it is difficult to apply this type of hybrid system to personal mobilities and industrial machines in a factory, and thus the authors have developed a new type of regenerative brake systems. This study proposes a regenerative brake system using a spiral spring and magnetic gears or planetary gears instead of using an electric motor and a battery. Experimental results demonstrate the characteristic and effectiveness of the proposed systems, in which the regenerative ratio of approximately 30% with magnetic gears and 47% with planetary gears is confirmed.

  • Magnticalley Geared Direct Online Machine

    This paper introduces direct online electric machines to achieve high torque at low speeds while maintaining a low number of poles. The proposed concept integrates line-start motor with a magnetic gear into a single housing with improved starting performance and rated operation torque density. Magnetic gears can scale the torque and speed of rotary systems, while avoiding problems associated with transferring torque through physical contact. The high speed PM rotor of the magnetic gear has Halbach structure and is physically integrated to the line-start rotor. The Halbach design restricts field interference between line-start and PM rotor, which helps with maintaining reliable and smooth starting performance with high locked rotor and breakdown torque capabilities. With Halbach design, the starting and steady state torque are smoother. Moreover, the Halbach design enhances magnetic field towards pole modulators of the magnetic gear, which enhances the power density of the proposed concept compared to the existing low speed, high torque solutions. Compared to the conventional mechanically geared system, the proposed solution is more compact with potentially increased mechanical reliability due to the reduction of mechanical contacts and does not require maintenance. When compared to the VSD fed direct drive systems the proposed solution provides improved torque density with cost saving potential.

  • Torque Analysis of Concentric Magnetic Gear With Interconnected Flux Modulators

    In a concentric magnetic gear, the space harmonic fields at inner/outer air gap have equal number of poles and rotate synchronously with the inner/outer permanent magnets, thanks to the flux modulators. The shape of flux modulators is one of the key factors that affect the harmonic fields, and hence the torque capability and ripples. Conventionally, the flux modulators are assembled by stacking small separated pieces of steel laminations; however, it is not easy to hold those small laminations firmly together. In order to make the flux modulators less complicated and more reliable, interconnected flux modulators made from full laminations have been implemented in the previous work. This paper investigates the torque performances of magnetic gear with different configurations of the modulating ring that are characterized by the shape of modulator, the position of interconnecting bridge, and the ratio of pole arc to pole pitch.

  • Noise and vibration analysis of an in-wheel motor with integrated magnetic gear dedicated for light electric application

    This paper describes first, a structural behavior of a permanent magnet synchronous machine, with inversed structure Above its topology it is placed a magnetic gear which has the role to increase the speed of the machine. The main purpose of this structure is to offer the possibility to obtain different levels of torque and speed from the two available rotors. In this paper is presented the vibro-acoustic behavior of the studied structure. It is known that the cause for the noise in a machine is due to the vibrations produced mainly by the radial forces within the structure. Because of the complexity of the structure, the main parts are studied individually to observe the level of noise produced of each one of them, separately. The comparison between numerical results of noise and vibration made for the two stators and two rotors represent the consistency of the paper.

  • A New Structure for the Magnetic Gear

    In this paper, a new structure for increasing the magnetic gear torque is proposed, which has high torque density and high mechanical properties. The permanent magnets (PMs) of the outer rotor are spoked and magnetized along the tangential direction. The PMs of inner rotor are the surface-mount type and magnetized in the radial direction. The PMs are fixed in the inner and outer rotors' iron yoke that the aim is to keep the PMs from falling off during the rotation. In order to reduce the amount of iron, it is considered to slot on the outer rotor. The two-dimensional finite element method is used for simulating the proposed model. The magnetic field and electromagnetic torque of the magnetic gear are calculated. Compared with the conventional magnetic gear, the results show that the torque transmission capability of the proposed magnetic gear can be substantially improved.



Standards related to Magnetic Gears

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Jobs related to Magnetic Gears

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