Results 191 to 200 of about 18,687 (256)

Development of a novel Coaxial Magnetic Gear

2017 15th International Conference on Electrical Machines, Drives and Power Systems (ELMA), 2017
Magnetic 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
openaire   +1 more source

Dynamic Torque Control Efficiency of Coaxial Magnetic Gears

2020 XI National Conference with International Participation (ELECTRONICA), 2020
Dynamic torque and speed control of Magnetic Gears (MG) affects their total efficiency, and often appears as output rotor slipping which reduces its speed and torque. This paper presents a dynamic model of a coaxial MG with a control system to estimate efficiency of power transmission.
Valentin Mateev, Iliana Marinova
openaire   +1 more source

Triple-speed coaxial magnetic gear for wind turbine applications: introduction and comprehensive analysis

Compel, 2022
Purpose This paper aims to introduce a new structure for coaxial magnetic gears. Design/methodology/approach The study discusses the design and electromagnetic modeling of a triple-speed coaxial magnetic gear (TSCMG) for three different levels of ...
A. Moghimi, Mahmood Hosseini Aliabadi, H. Feshki Farahani   +2 more
semanticscholar   +1 more source

Analysis and optimization of coaxial magnetic gears

2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2016
Coaxial magnetic gears with permanent magnets have a very simple structure and performance comparable to that of mechanical gears. The paper describes an analytical simplified approach for the analysis and design procedure. The mathematical model is one-dimensional: only the variation of electromagnetic quantities as function of angular position is ...
Ometto A., Rotondale A., Rotondale N., Gentile G.   +3 more
openaire   +2 more sources

Design of an L-Shaped Hybrid PM Array in Coaxial Magnetic Gear

The Power Electronics, Drive Systems & Technologies Conference
This paper proposes a coaxial magnetic gear that has the advantages over current models in terms of torque density, cogging torque, and iron losses. In this magnetic gear, a new magnet arrangement called L-type is used to combine the good features of ...
Mojtaba Malakooti Khaledi, Seyed Ahmadreza Afsari Kashani   +1 more
semanticscholar   +1 more source

Cogging Torque and Strength Optimization of Coaxial Magnetic Gear with Nonuniform Ferromagnetic Pole-pieces

International Conference on Electrical Machines and Systems
Currently, the coaxial magnetic gear (CMG) has two operating modes: stator type and rotation type of magnetic modulation ring. The coaxial magnetic gear with a rotational magnetic modulation ring (R-CMG) is widely used due to its high transmission ratio ...
Cheng Gao, Kan Liu, Huaqiang Cai, Jinya Chen, Junjie Tao, Yan Ding, Yongdan Chen, Tianyu Su   +7 more
semanticscholar   +1 more source

Analysis of the Vibration Characteristics of Coaxial Magnetic Gear

IEEE Transactions on Magnetics, 2016
This paper investigates the vibration and noise characteristics of the coaxial magnetic gear (CMG) by the electromagnetic forces. In the CMG, the vibration and noise can be generated by the exciting forces acting on three parts, namely, low-speed rotor, high-speed rotor, and modulating pieces, respectively.
Jiyoung Lee, Junghwan Chang
openaire   +1 more source

Mitigation of Cogging Torque in Coaxial Magnetic Gear by Rotors Skew-Shaping

2025 12th Iranian Conference on Renewable Energies and Distributed Generation (ICREDG)
The torque between an input and an output shaft can be transferred by magnetic gears without the need for physical contact. In certain instances, the design specifications of the entire system dictate that magnetic gears have an integer gear ratio.
Mojtaba Malakooti Khaledi, Seyed Ahmadreza Afsari Kashani   +1 more
semanticscholar   +1 more source

Analytical vibration of middle rotor of coaxial magnetic gear with complicated structure due to holes and screws

Mechanics based design of structures and machines, 2022
Coaxial magnetic gear is a cutting-edge technology introduced a few years ago. Its middle rotor is a rotating steel cylindrical shell with a variable array of holes that are filled by brass screws, hence it is such a complicated structure due to these ...
Yaser Heidari, M. Irani Rahaghi, Seyed Ahmadreza Afsari Kashani, M. Arefi   +3 more
semanticscholar   +1 more source

Comparison of Reluctance and Surface Permanent Magnet Coaxial Magnetic Gears

2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020
The 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, Matthew C. Gardner, Matthew Johnson, Hamid A. Toliyat   +3 more
openaire   +1 more source