This paper presents a magnetic field analysis of an original Doubly-Excited Brushless Reluctance Machine (DEBRM). The stator of the DEBRM consists of two sets windings with different pole numbers. The rotor is an axially laminated structure with a pole number different from either of the stator windings. The finite element method is applied by which the magnetic vector potentials under no-load ...

According to modern grid regulations, doubly fed induction generator (DFIG) needs to operate without losing synchronism during grid faults. But, severe fault leads to rise in stator and rotor current to a higher value and generator will get damaged. Large oscillations in stator real and reactive power are produced and consequently large torque oscillations get developed. To overcome the above a...

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 paper presents an accurate analytical subdomain model for predicting the electromagnetic performance in symmetrical dual three-phase surface-mounted permanent magnet synchronous machine (PMSM) under open-phase faulty conditions. derivations are extended from previous models accounting slotting effects. Compared with most conventional traditional machines nonoverlapping winding arrangement, ...

A scientific approach to calculating the parameters and characteristics of an asynchronous motor in inter-turn short circuit mode one phase stator is proposed create foundations a diagnostic complex for assessing condition motors transport infrastructure. This consists fact that model with which research carried out, it take into account changes mutual inductance when AC impedance phases change...

In this paper, an axial slot-less permanent magnet synchronous motor (ASFPMSM) was designed to increase the power density. The iron core of stator replaced with block coils, and back yoke removed because 3D printing can provide a wide range structures stator. proposed model also significantly impacts efficiency it reduce loss. To meet size performance requirements, coil thickness number winding...

In this contribution will be presented results from investigations on partial discharges (PD) in insulation systems, resembling the stator insulation in high voltage rotating machines. A model, simulating a stator winding in a slot, has been developed, consisting of simple rotating machine insulation test bars with epoxylmica insulation, mounted between steel sheets forming a slot, in order to ...