This paper addresses the diagnostics of stator faults in three-phase line-start permanent magnet synchronous motors. More traditional fault diagnostic methodologies are unable to properly diagnose inter-turn short-circuit motors under unbalanced supply voltage conditions, since both conditions impact indicators used for a similar way. In this paper, relation between symmetrical components quant...

Conduction in inward rectifier, K+-channels in Aplysia neuron and Ba++ blockade of these channels were studied by rapid measurement of the membrane complex admittance in the frequency range 0.05 to 200 Hz during voltage clamps to membrane potentials in the range -90 to -40 mV. Complex ionic conductances of K+ and Cl- rectifiers were extracted from complex admittances of other membrane conductio...

Input current distortion in the vicinity of input voltage zero crossing of Boost single-phase active power factor corrected rectifier in high line frequency is studied based on one cycle control method in this paper. The current loop model and input admittance model of active power correction based on one cycle control is particularly analyzed. The results point out that its equivalent power st...

In this paper an attempt has beenmade to investigate the transient stability enhancement of both SMIB and Multi-machine system using UPFC controller tuned by Particle Swarm Optimization. Power injection modelfor a series voltage source of UPFC has been implemented to replace UPFC by equivalent admittance. The admittance matrix of the power system is then modified according to the power injectio...

A methodology is proposed and demonstrated for the direct passive synthesis of SPICE-compatible models of multi-conductor interconnect structures. The algorithm is based on a PadéChebyshev approximation of the frequency-dependent input impedance matrix of the passive interconnect system. Given the bandwidth of simulation, the length of the interconnect system, and its per-unit-length, frequency...

An improved version of the multimodal admittance method in acoustic waveguides with varying cross sections is presented. This method aims at a better convergence with respect to the number of transverse modes that are taken into account. It is based on an enriched modal expansion of the pressure: the N first modes are the local transverse modes and a supplementary (N+1)th mode, called boundary ...

Recent large-scale power outages demonstrated the limitations of percolationand epidemic-based tools in modeling failures in power grids. Hence, we study the impact of line failures on the flow changes and cascade in the transmission system of the power grid by using a linearized power flow model. We use the pseudo-inverse of the power grid admittance matrix to obtain upper bounds on the flow c...