A semi-active vibration absorber with real-time controlled magnetorheological damper (MR-
SVA) for the mitigation of harmonic structural vibrations is presented. The MR damper force …

An active-damping strategy is proposed for the suppression of speed and torsional
oscillations in permanent-magnet synchronous generator (PMSG)-based wind-energy …

This paper describes the new concept of a semi-active tuned mass damper with
magnetorheological damper (MR-STMD). The real-time controlled MR damper force …

Periodic out-of-round or polygonised wheels were detected on a fleet of high adhesion
locomotives operating within South Africa. The polygonised wheels increased the vertical …

This paper presents a new adaptive tuned mass damper (TMD) whose stiffness and
damping can be tuned in real-time to changing frequencies of a target structure. The …

This study investigated and evaluated a semi-active tuned mass damper which incorporated
four multi-layered structures fabricated using magnetorheological elastomers. The four …

Abnormal vibration can lead to frequent maintenance requirements of electric locomotives.
Many factors contribute to the vibration, and the influence mechanism of pulsating torque …

Severe vibrations and an increase in structural component fatigue failures have been
observed on a freight locomotive class operating on a heavy haul route within South Africa …

In modern power systems, interharmonics have emerged as noninteger frequency
components that appear in current or voltage signals. Double-stage AC-DC-AC converters …

Sinusoidal voltage fluctuations can be considered a specific result of the occurrence of
voltage subharmonics and interharmonics, which are components of low frequency or not …