This paper proposes a design methodology for linear actuators, considering thermal and electromagnetic coupling with geometrical and temperature constraints, that maximizes force density and minimizes force ripple. The method allows defining an actuator for given specifications in a step-by-step way so that requirements are met and the temperature within the device is maintained under or equal ...

A novel capsule pipeline transportation system using a linear synchronous motor, called Magplane MagPipe, is under development with the intention to replace trucks and railways for hauling materials from the mine to the rail head, power plant or processing plant with reduced operating cost and energy consumption. The initial demonstration of a MagPipe line in Inner Mongolia will be a 500 meter ...

An experimental device that can accurately measure the magnetic entropy change, Δs, as a function of temperature, T, and magnetic field, H, is presented. The magnetic field source is in this case a set of counter-rotating concentric Halbach-type magnets, which produce a highly homogeneous applied field with constant orientation. The field may be varied from 0 to 1.5 T in a continuous way. The t...

Additive manufacturing allows for the production of complex parts with minimum material waste, offering an effective technique for fabricating permanent magnets which frequently involve critical rare earth elements. In this report, we demonstrate a novel method - Big Area Additive Manufacturing (BAAM) - to fabricate isotropic near-net-shape NdFeB bonded magnets with magnetic and mechanical prop...

Electromagnetic vibrational energy harvesters (EM-VEHs) are generally used to convert ambient vibrations into electricity energise low-power sensor nodes forming the Internet of Things (IoT). Usually such VEHs comprise coils and magnets orientated in vertical direction (z-direction) but these devices tend be quite bulky it is hard integrate them printed circuit board technology. Configuring a p...

• Halbach magnet adapted with rings for mechanical shimming. Novel passive magnetic field shimming method based on ferrofluid suspensions in microvolumes. Small size light-weight assembly suitable mobile resonance applications. A novel principle of permanent assemblies is introduced, defined amounts a suspension contained microliter volume plastic container that accurately positioned within the...

Purpose – Force output is extremely important for electromagnetic linear machines. The purpose of this study is to explore new permanent magnet (PM) array and winding patterns to increase the magnetic flux density and thus to improve the force output of electromagnetic tubular linear machines. Design/methodology/approach – Based on investigations on various PM patterns, a novel dual Halbach PM ...

The Beam Switchyard for the Stanford Linear Accelerator is a large Y-shaped area (see Fig. 1) containing, magnets, sl i ts , collimators, and instrumentation for beam observation. It has three main functions: (1) to momentum analyze the beam and determine energy spread a t the exit; (2) to transport the beam to the experiment under selected focusing conditions; and (3) to separate the interlace...