Torque sharing function (TSF)-based switched reluctance motor (SRM) control is an effective approach to minimize torque ripple and maximize efficiency. This study investigated the influence of rotor geometry overcome inherent current tracking error used TSFs. Parameters TSF were optimized according several objectives. A finite element method simulation model was built verified evaluate objectiv...

We have recently proposed a compact, dual-head PET scanner configuration for providing high-sensitivity imaging of small animals. Although the scanner is able to reach a sensitivity of about 30% at the center of imaging field-of-view, its compact configuration produces substantial depth-of-interaction (DOI) blurring and results in significantly degraded spatial resolution. It is known that DOI ...

This paper presents the comparisons between two types of switched reluctance machines (SRMs) and SRM converters. An with a segmental rotor is compared conventional (CSRM), an converter containing passive boost circuit asymmetric half-bridge (AHB) converter. The has segmented structure. four segments are made steel laminations. Two misaligned other by 15 degrees. torque ripple this structure dec...

Torque ripple is an inherent property of switched reluctance motor (SRM), which seriously affects the control performance and application motor. This paper proposes two torque suppression strategies based on torque-sharing function (TSF). According to symmetry characteristics flux linkage rotor position curve family, a fourth-order Fourier series used fit SRM analytical model. The coefficient e...

The article presents the features of traction switched reluctance motors with a diametric closure magnetic flux and “short field”. A computer simulation motor short field is performed for ideal location rotor inside stator, as well two cases displacement. hodographs radial interaction forces stator are calculated.

Because of extreme local saturation at pole tips of excited phase and uncircular shape of rotor and stator, a Swithed Reluctance Motor (SRM) does not have a simple and accurate mathematical model. Therefore, the output control of this motor requires a robust controller which is not based on an accurate model of the process. Fuzzy controllers, to some extent, will satisfy these requirements. Tet...

Doubly Excited Brushless Reluctance Machine (DEBRM) has gained much attention recently in the area of variable-speed constant-frequency generating systems and adjustable speed drives. Two types of reluctance rotor structure, axially laminated and simple salient rotors, are suggested in the DEBRM development. Due to the unconventional pole number combination of the stator and rotor, performance ...

This paper describes a new method for indirect sensing of the rotor position in switched reluctance motors (SRM’s) using pulsewidth modulation voltage control. The detection method uses the change of the derivative of the phase current to detect the position where a rotor pole and stator pole start to overlap, giving one position update per energy conversion. As no a priori knowledge of motor p...