The US Department of Energy funded a project on the design, testing and construction of a prototype tunable focusing quadrupole permanent magnet for the NS-FFAG magnet transport lattice of the high energy ring eRHIC. This presentation will focus on the magnetic and
It is commonly believed that the expensive rare-earth elements Nd and Sm are essential to generate coercivity in permanent magnets, as exemplified by the two high-performance magnets Nd2Fe14B and SmCo5, with respective energy products exceeding 50 and 25 MG-Oe. In this talk
Rare earth magnets such SmCo5,Sm2Co17, NdFeb,NdFebDy, NdFeBHRE (HRE=Heavy rare earth) were developed with very high energy product and have been used extensively in motors, speakers, actuating devices and in computer peripherals for quite a few years. Very high percentage of the rare
ASTM International has recently introduced a set of permanent magnet material standards, providing an up to date set of specifications. The set consists of four standards, one each for Alnico, Hard Ferrite, Samarium Cobalt and Neodymium Iron Boron. Proper use of the
The global permanent magnet market is dominated by rare earth magnets based on the Nd2Fe14B phase accounting for over 60 percent of total sales. The current status of material development and processing technologies will be reviewed. With the forecast growth in applications
The design of an electric motor dyno test cell can range from a simple benchtop bicycle break to a multi-million dollar system. No matter the scale of a system, there are certain practices that can make a system effective or a nightmare.
This course is to provide fundamental concepts of electric motors and motor control techniques as well as introducing advanced technologies practically in use. This course also discusses control electronics hardware and AC/DC motor control algorithms, servo system feedback control, PID regulators and