This paper investigates a drive system with energy recovery which uses 3-phase 1-kW 36-slot 12-pole distributed winding outer-rotor surface-mounted permanent-magnet synchronous motor (SPMSM) and generator (SPMSG), can be used in indoor exercise bicycles. In order to extend operating speed range, the constant torque control, flux-weakening maximum torque/voltage control are its operation up 1.75...

this paper describes day-one beamlines of the iranian light source facility and design concept of powder diffraction and spectromicroscopy beamlines as the most priorities of each synchrotron that cover the research requirements in the fields of physics, chemistry, nano-science, etc. for powder diffraction beamline energy range is 6-30 kev, resolution: 10-4, flux: 1012(ph/s/0.1%b.w.) and spot s...

In this paper, a novel mechanical flux-weakening design of spoke-type permanent magnet generator for stand-alone power supply is proposed. By controlling the position adjustable modulator ring mechanically, total induced voltage, i.e., amplitude back EMF vector sum can be effectively adjusted accordingly by modulation effect. Consequently, variable-speed constant-amplitude voltage control (VSCA...

Within the fluid iron cores of terrestrial planets, convection and the resulting generation of global magnetic fields are controlled by the overlying rocky mantle. The thermal structure of the lower mantle determines how much heat is allowed to escape the core. Hot lower mantle features, such as the thermal footprint of a giant impact or hot mantle plumes, will locally reduce the heat flux thro...

This article investigates some novel modular consequent pole PM machines (CPMs) with E-core and C-core stators. Different slot-pole number combinations including 12-slot/10-pole ( Ns>2p ) 12-slot/14-pole xmlns:xlink="http://www.w3.org/1999/xlink">Ns<2p have been investigated. Their st...

These techniques are traditionally solved using a mathematical model of the machine with fixed parameters. However, in a real machine, the stator and rotor resistances are altered by temperature and the inductances are altered by the magnetizing current values that change for example when the machine is running in the flux weakening region or by an improper detuning between the flux and torque ...

[1] This paper analyzes slip on a fluid-infiltrated dilatant fault for imposed (tectonic) strain rates much slower than the rate of fluid exchange between the gouge zone and the surroundings and for exchange of heat slower than of fluid, typical of interseismic or most laboratory loading conditions. The limiting solution, corresponding to the infinitely rapid drainage rate, developed in the com...