In this paper, we propose a novel method to improve the circuit simulation accuracy of insulated-gate bipolar transistor (IGBT) power devices under short-circuit state. To determine IGBT junction temperature, transient thermal resistance an device on order micro seconds is estimated by simulations. The saturation current without self-heating effects based test and resistance. SPICE parameter ex...

AbstructIGBT’s are available with short-circuit withstand times approaching those of bipolar transistors. These IGBT’s can therefore be protected by the same relatively slow-acting circuitry. The more efficient IGBT’s, however, have lower shortcircuit withstand times. While protection of these types of IGBT’s is not difficult, it does require a reassessment of the traditional protection methods...

An analytical model of an amorphous silicon p-i-n solar cell is presented to describe its photovoltaic behavior under short-circuit conditions. It has been developed from the analysis of numerical simulation results. These results reproduce the experimental illumination dependence of short-circuit resistance, which is the reciprocal slope of the I(V) curve at the short-circuit point. The recomb...

This paper presents a parametric low differential order model, suitable for mathematically analysis for Induction Machines with faulty stator. An adaptive Kalman filter is proposed for recursively estimating the states and parameters of continuous–time model with discrete measurements for fault detection ends. Typical motor faults as interturn short circuit and increased winding resistance ...

This paper proposes an original simplified model aimed to simulate, an easy way, inter turns short circuit fault, phase to phase fault and phase to ground fault. In this model, the stator is considered as six magnetically coupled windings and the rotor as three not magnetically coupled R–L circuits. The paper also presents the starand delta-connected stator configurations of the simplified mode...

To cite this Article Fontaine, Johnny , Luyten, Patrick and Corveleyn, Jozef(2000) 'Tell Me What You Believe and I'll Tell You What You Want: Empirical Evidence for Discriminating Value Patterns of Five Types of Religiosity', International Journal for the Psychology of Religion, 10: 2, 65 — 84 To link to this Article: DOI: 10.1207/S15327582IJPR1002_01 URL: http://dx.doi.org/10.1207/S15327582IJP...

It is widely assumed that causation is transitive, but putative counterexamples abound. These examples come in three varieties: switching cases, short circuit cases, and what I will call mismatch cases. In this paper I focus on the mismatch variety, which is widely taken to be the easiest to resolve. I will first introduce the cases and the existing strategy for dealing with them, then present ...

Nodes Expanded (100K) CPU Time (s) Algorithm Weight Solved Sub-optimality Mean Median Mean Median Switch 100 1.13 0.29 0.20 0.10 0.06 Short Circuit 100 1 1.39 0.91 0.89 0.55 Short Circuit WA* 1.1 100 1.01 1.69 1.28 1.10 0.81 ” ” 1.2 100 1.03 2.39 1.89 1.59 1.24 ” ” 2 100 1.24 6.34 6.77 4.46 5.00 ” ” 5 100 1.44 6.03 8.06 4.22 5.75 ” ” 10 100 1.53 5.51 6.34 3.84 4.52 Short Circuit Greedy 100 5.17...

This paper describes a new design for a fault tolerant Hbridge dc-dc converter. Open circuit and short circuit fault tolerance is achieved using multilevel converter topology in combination with pulse width modulation control strategy allowing a large set of converter switching states to produce bidirectional power flows at any required output voltage. If two switches fail at particular instant...

The relationship between the short circuit ratio (SCR) and static voltage stability is analyzed in this paper. According to eigenvalue decomposition method, a novel concept named generalized short circuit ratio (gSCR) has been proposed for multi-infeed LCC-HVDC (MIDC) systems to mathematically measure the connected AC strength from the point view of voltage stability, which can overcome the rul...