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Development of a novel Coaxial Magnetic Gear
2017 15th International Conference on Electrical Machines, Drives and Power Systems (ELMA), 2017Magnetic Gears (MGs) offer many advantages compared to mechanical gears such as reduced maintenance, high reliability and inherent over load protection. Among various MGs, a Surface Permanent Magnet (SPM) type Coaxial Magnetic Gear (CMG), which may be accepted to be a classical CMG, is may be preferable owing to its high torque transmission capability.
Fuat Kucuk, Sadra Mousavi
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Harmonic analysis of the magnetic field of a coaxial magnetic gear
2017 15th International Conference on Electrical Machines, Drives and Power Systems (ELMA), 2017In this paper two constructions of a coaxial magnetic gear (CMG) have been investigated. A 2D time dependent Finite Element Method (FEM) models of the two constructions have been implemented. A harmonic analysis of the gears' magnetic fields and output dynamic torques are performed. The FEM modelling is carried out by ANSYS Maxwell software.
Iliana Marinova +2 more
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Dynamic model of coaxial magnetic planetary gear
2015 18th International Conference on Electrical Machines and Systems (ICEMS), 2015This paper presents equations, describing the dynamic behavior of a coaxial magnetic planetary gear and its implementation in a Matlab/Simulink model. Parameters of speed oscillations caused by a disturbance of the drive torque are studied. The paper also includes simplified formulas for calculation an eigenfrequency and damping parameters of the ...
Oleg Molokanov +3 more
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Structural Optimization of a Novel Coaxial Magnetic Gear
Advanced Materials Research, 2012Compared with the traditional mechanical gear, permanent magnetic gear has some unique advantages, such as high efficiency, noise free, zero friction, and overload protection and so on. However, its applications are always constrained due to its unstable or not smooth torque produced by this kind of magnetic gear. Based on the structure of the magnetic
Yong Kui Man +5 more
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Eddy Current Losses of Coaxial Magnetic Gears
2018 XIII International Conference on Electrical Machines (ICEM), 2018Reduction 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.
V. Mateev, M. Todorova, I. Marinova
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A Coaxial Magnetic Gear With Consequent-Pole Rotors
IEEE Transactions on Energy Conversion, 2017In this paper, a novel coaxial magnetic gear (MG) is proposed, in which both permanent magnet and consequent poles are employed on the inner and outer rotors. The MG is expected with improved torque transmission capability by increasing the effective magnetic flux and offering additional reluctance torque.
Jian-Xin Shen +3 more
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IEEE Transactions on Energy Conversion, 2021
Magnetic gears, like mechanical gears, transform power between different speeds and torques; however, magnetic gears’ contactless nature provides inherent potential benefits over mechanical gears. A genetic algorithm was used to optimize magnetic gears at different temperatures across a range of gear ratios.
Matthew C. Gardner +3 more
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Magnetic gears, like mechanical gears, transform power between different speeds and torques; however, magnetic gears’ contactless nature provides inherent potential benefits over mechanical gears. A genetic algorithm was used to optimize magnetic gears at different temperatures across a range of gear ratios.
Matthew C. Gardner +3 more
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Magnetic Materials for Coaxial Magnetic Gear Torque Density Enchainment
2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), 2020In this paper are analyzed different soft and hard magnetic materials for coaxial magnetic gears torque enhancement. Estimation of material properties impact over the magnetic gear input and output torques is implemented by finite element method model. The modelling is carried out by Ansys-Maxwell software.
Valentin Mateev +2 more
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Torque and Power Density of Coaxial Magnetic Gears
2019 II International Conference on High Technology for Sustainable Development (HiTech), 2019In the present work, the recent positive trend in torque and power density of the coaxial magnetic gears is discussed. Timeline of magnetic gears development according to design topology and magnetic materials improvements is presented. Five generations of magnetic gears are recognized according to the torque density limitations.
Valentin Mateev +2 more
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Comparison of Reluctance and Surface Permanent Magnet Coaxial Magnetic Gears
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020The noncontact operation of magnetic gears offers significant potential advantages over mechanical gears. Reluctance magnetic gears (RMGs) have been proposed as an alternative to surface permanent magnet gears (SPMGs) at high speeds. This paper explains the operating principles of RMGs and provides a thorough parametric comparison between RMGs and ...
Shima Hasanpour +3 more
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