When a cylindrical magnet is rotated about its axis, electric fields develop on its surface which can be used to generate continuous currents. This effect is an example of electromagnetic induction, mechanical energy being converted into electrical energy, through the mediation of the magnetic field. It is suggested that the effect can be explained most simply in terms of the forces acting on c...

9. PERMANENT MAGNET SYNCHRONOUS MACHINE (PMSM) ......................................... 1 9.1 PMSM Configurations and Machine Parameters ................................................................ 2 9.2 Equivalent Circuit and Vector Diagram of a PMSM ........................................................... 8 9.3 Current Vector Control ......................................................

This paper proposes a stator core design to achieve variable-flux characteristics enhanced by magnetic saturation in fractional-slot concentrated winding (FSCW) permanent-magnet (PM) motors without additional excitation systems, complicated structures, or active controls. Magnetic induced at suitable locations can enhance because the PM flux linkage is variable with cores. In distributed config...

Abstract The stability of the grid voltage is directly related to DFIG operation, which topology DFIGURE After failure, rotor current will be too large if threshold exceeded continuously. low control uses additional hardware measures make wind turbines survive under impact drop. Because increase investment system, this paper proposes an rotor-side converter double-fed turbine considering stator...

The special design of linear induction machines (LIMs) leads to adverse effects caused by the longitudinal and end effects. These make thrust control LIMs most attractive because its value decreases sharply with speed increase. Thus, finite-state model predictive (FS-MPC) is developed increase performance LIMs. However, variable switching frequency main drawback this control. Consequently, obje...

The domesticated silkworm, Bombyx mori, is of high commercial importance as a silk producer and is also widely used for implementation of basic and applied research. It is important to understand its genome organization using molecular markers for genetic studies and for breeding purposes. In this study, a genetic linkage map using 204 amplified fragment length polymorphism (AFLP) markers was d...

results the mean kt/v was 1.27 ± 0.28 in high-flux and 1.10 ± 0.32 in low-flux membrane which, these differences were statistically significant (p = 0.017). the mean of urr was 0.65 ± 0.09 in high-flux and 0.61 ± 0.14 in low-flux membrane, which these differences were not statistically significant (p = 0.221). patients and methods forty hemodialysis patients participated in this cross-over clin...