Offline power converter products must apply for and pass the national electrical safety code before they can be marketed. The transformers of offline converters made from certificated materials with a high voltage rating insulation, which increases volume printed circuit boards. In most studies, miniaturization is usually achieved by increasing conversion efficiency reducing heat sink, or switc...

A numerical tool is proposed to simultaneously assess various damage mechanisms that are driven by contact loading. The transfers loads the contact-patch level using three parameters: maximum pressure (pmax), creepage (c) and length (2a). local wear RCF predictions implemented based on existing models from literature. load input can originate vehicle–track simulations or manual of user. assessm...

Hunting; Rail wheelset; Hopf bifurcation; Discontinuous nonlinearity; Routh–Hurwitz criterion; Equivalent function; Analytical approach. Abstract This paper presents an investigation on bifurcation of railway bogie behavior in the presence of nonlinearities which are yaw damping forces in longitudinal suspension system and the friction creepage model of thewheel/rail contact including clearance...

Abstract In this work, a numerical model is proposed for three-dimensional rolling contact problems with one or two elastic layers, and the tangential solution emphasized. Previous works on topic have mostly been two-dimensional, in which only longitudinal creepage has considered. With presented all possible creepages, such as longitudinal, lateral spin creepages are taken into account. order t...