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...

This paper presents a semi-analytical homogenization model for Soft Magnetic Composites (SMCs), providing the effective magnetic behavior and level of Eddy Current (EC) losses. Both linear nonlinear are considered. A circuit made SMC is then modeled with Finite Element Model (FEM). The size heterogeneities being much smaller than device size, proposed approach relieves burden very fine mesh in ...

For the analysis of process partial demagnetization permanent magnets (PMs) in electric machines, a field model coupled electromagnetic and thermal phenomena was proposed. In proposed approach non-linearity magnetic circuit, effect temperature on magnetic, electrical properties materials as well developed method for modeling PMs were taken into account. order to verify usefulness effectiveness ...

The voltage biased SQUID Bootstrap Circuit (SBC) was recently demonstrated for direct readout of SQUID signals. The SBC combines currentand voltage-feedbacks in one circuit to suppress the preamplifier noise. It offers not only a good noise performance, but also wide tolerance of SQUID parameters. Using SBC gradiometer, the bio-magnetic signals were successfully measured. In this paper, we over...

This paper explains about basic working principles, implementation problems, and experimental results of a new power factor correction (PFC) topology. In this proposed topology, a totem-pole boost PFC circuit that works under interleaved critical-conduction-mode (CRM) condition is presented. The circuit is developed towards high efficiency, high performance, lowcost, simple control scheme, and ...