This paper present a MATLAB-SIMULINK model of a single phase 2.5 KVA, 240V RMS controlled PV VSI (Photovoltaic Voltage Source Inverter) inverter using IGBTs (Insulated Gate Bipolar Transistor). The behavior of output voltage, output current, and the total harmonic distortion (THD), with the variation in input dc blocking capacitor (Cdc), for linear and non-linear load has been analyzed. The val...

I present a simple analytical model in continuous time where individuals can be either healthy or ill, and have constant transition between the states and constant mortality rates in each state. The values from being in each of the two live states are represented by two Bellman dynamic programming equations. This leads to simple expressions for lifetime values of remaining in each of the states...

The VLTI-Spectro-Imager (VSI) is a 2nd generation VLTI instrument under development (Malbet et al. 2008). The main improvement of VSI with respect to previous interferometric instruments (e.g. AMBER) is a significant enhancement of the imaging capability, thanks to the combination of 6 beams resulting in a significant spatial frequency gain. The science input will be further improved using the ...

Recent studies have shown that the 2 T control chart with variable sampling intervals (VSI) and/or variable sample sizes (VSS) detects process shifts faster than the traditional 2 T chart. This article extends these studies for processes that are monitored with VSI and VSS using double warning lines ( DWL T − 2 ). It is assumed that the length of time the process remains in control has exponent...

This paper focuses on the implementation of a three-phase four wire current-controlled Voltage Source Inverter (CC-VSI) as both PV energy extraction and power quality improvement. For power quality improvement, the CC-VSI works as a grid current-controller shunt active power filter. Then, the PV array supported by a Look-up Table type of a MPPT controller is coupled to the DC bus of the CC-VSI....