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This paper investigates a three-phase 12/8 poles bearingless doubly salient permanent magnet machine (BDSPMM) with suspending windings, armature windings and PMs on the stator. Based on the topology and operating principle, the influence of PM magnetization length on the performance of the BDSPMM is analyzed and a mathematical model of radial suspending force is deduced from the magnetic circuit....
HL-2M is a medium-sized copper-conductor tokamak under construction at the Southwestern Institute of Physics. The designed plasma parameters of HL-2M are as follows: $\text{plasma}\ \text{current}=2.5\ \text{MA}$, $\text{toroidal}\ \text{field}=2.2\ \text{T}$, $\text{major}\ \text{radius}=1.78\ \text{m}$, $\text{minor}\ \text{radius}=0.65\ \text{m}$, $\text{flux swing} > 14\ \text{V}\cdot\text{s}$...
This paper presents a method of optimizing number of turns of the main and radial force winding for a bearingless switched reluctance motor (BSRM) with 12/8 teeth configuration based on its mathematical model. The radial force and torque of BSRM are analyzed on condition of different combinations of the magnetomotive force of two kinds of windings. The winding configuration has a strongly influence...
With engine developing towards high-speed, high-power and light-weight, problem of engine's vibration is becoming more and more serious. In order to reduce the engine's vibration, engine mount system must be designed. A kind of semi-active damp variable mount and its control law were introduced in the paper. By building simplified mount model, the vibration performance of a traditional passive mount,...
This paper investigates effects of rotor eccentric radial displacements on magnetic field distribution, winding inductances, radial force and torque of BSRM. Magnetic field distributions of BSRM with different displacements of rotor eccentricity are calculated by 2-D finite element analysis. Then inductances of main and radial force windings, radial force and torque can be obtained, respectively....
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