A magnetic gear is a device that shows characteristics of a gear through the magnetic force of a permanent magnet. Permanent magnets are attached to the input and output rotors and transmit power using magnetic coupling without mechanical contact. Due to the non-contact power transmission method, it is possible to solve the problem of noise and wear due to the friction of the mechanical gear....
An optimized NbTi-magnet lay-out has been designed for a Magnetic Density Separation (MDS) system. MDS is a novel recycling technology that allows the separation of non-magnetic materials based on their mass density. In the process, products are submerged in a ferro-fluid stream that flows over a magnet system which produces a strong vertical field gradient. The combined weight of the...
Using electric magnetic suspension, magnetic levitation (MagLev) systems have been widely applied in various industries for their great characteristics such as non-contact, noise free, cleanness, high speed transportation, and so on. Especially, superconducting-hybrid electro-magnetic suspension (SH-EMS) is increasingly receiving attention in high-speed transportation because of their property...
Hybrid thrust magnetic bearing(HTMB) for heavy rotating shaft should be considered axial load at initial design stage since as the load increases, the force is generated asymmetrically. Therefore, the force acting on the upper part and the force acting on the lower part must necessarily be designed in different ways. In the case of a vertically driven shaft with a heavy impeller mounted...
Superconducting MgB2 wire is characterized to analyze the optimum working point of a magnet system for magnetic density separation (MDS) in terms of the magnetic field and operating temperature. MDS is an innovative recycling technology that selectively separates particles in a waste stream based on their mass density by suspending them in a ferro-fluid that flows through a strong vertical...
Manipulation of magnetic particles with the aid of dynamic magnetic fields including rotating and oscillating fields has been recently increased in various applications, such as mixing, separation and steering. In these processes, the motion behavior of particles is mainly dominated by the competition between magnetic force and induced hydrodynamic drags, and therefore both the inter-particle...
Magnetic particles are known to align and aggregate into multi-particle clusters in an applied magnetic field, and this aggregation phenomenon has been widely used in various biological and chemical applications. However, it will give rise to the separation difficulty of multiple types of magnetic particles with different sizes in traditional magnetic separation process. In this work, an...
We studied the levitation separation for precious metals utilizing magneto-Archimedes effect in high gradient magnetic fields. In order to enhance the magnetic force cylindrical ferromagnetic materials were set into a 10 T superconducting solenoidal magnet. The power factor of BgradB for magneto-Archimedes force reached the high value over -1000 T2/m by the optimum arrangement of ferromagnetic...
As All Electric Ship (AES) capacity increasing dramatically, load fluctuation of such systems may cause serious problems, such as voltage fluctuation of the ship power grid, increasing fuel consumption, and environmental emissions. In order to reduce the effects of system load fluctuations on system efficiency, and to maintain the bus voltage, a Hybrid Energy Storage System (HESS) is...
Mechanical gears, which are employed in the many fields of modern industry, are used mostly for power-transmitting mechanical devices. However, because the mechanical gear operates, in principle, by the engagement of gear teeth, it is difficult to avoid problems such as friction loss from physical contact, noise, and vibration. To address this problem, magnetic gears have been proposed as a...
