We present a study of transport in graphene devices on polar insulating substrates by solving the Boltzmann transport equation in the presence of graphene phonon, surface polar phonon, and Coulomb charged impurity scattering. The value of the saturated velocity shows very weak dependence on the carrier density, the nature of the insulating substrate, and the low-field mobility, varied by the ch...

protection systems have vital role in network reliability in short circuit mode and proper operating for relays. current transformer often in transient and saturation under short circuit mode causes mal-operation of relays which will have undesirable effects. therefore, proper and quick identification of current transformer saturation is so important. in this paper, an artificial neural network...

When using high-frequency current transformers (HFCT) to measure partial discharges (PD) on power cables, core saturation caused by the 50 Hz operating of cable is a major problem. Saturation leads nonlinearity in transfer function HFCT sensor and significantly reduces its sensitivity PD signals. To avoid magnetic ensure linear operation thus maximum sensitivity, split ferrite can be used. Howe...