The virtual synchronous generator (VSG) technique is used to simulate the external characteristics of a (SG) provide certain damping and inertia power systems. However, it may easily cause low-frequency oscillation system. We studied small-signal stability grid-connected generator. Firstly, models single-VSG multi-VSG systems were established. Subsequently, system eigenvalues obtained by solvin...

In this paper, we discuss about the LabVIEW based graphical applications for the measurements of signal. A virtual instrument is designed in order to serve the purpose of oscilloscope with a user friendly interface at the front panel. The designed oscilloscope is derived from a hardware instrument named Digital Phosphor Oscilloscope TDS 5104B.Firstly the original hardware device functions are e...

This work designs and implements a virtual digital signal processing laboratory, VDSPL. VDSPL consists of four parts: mobile agent execution environments, mobile agents, DSP development software, and DSP experimental platforms. The network capability of VDSPL is created by using mobile agent and wrapper techniques without modifying the source code of the original programs. VDSPL provides human-...

In addition to real measurements, the LabVIEW is very effective application for interactive what-if simulation in education. A previously developed virtual instrument is further enhanced to simulate measurements while arbitrary changing instrument properties, including the damping, phase shift, magnitude ratio, and natural and sampling frequencies. The effect of virtual instrument properties on...

virtual water adds a new dimension to crop trades and provides a new way of thinking about water scarcity. a systematic analysis of virtual water flows requires integration of all critical drivers of virtual water flows under a single consistent framework. the aim of this study was to assess virtual water flows related to trades of grain crops (wheat, corn, rice, and coarse cereals) and their i...

Grid-forming inverters are sensitive to large grid disturbances that may engender overcurrent due their voltage source behavior. To overcome this critical issue and ensure the safety of system, current limitation techniques have be implemented. In context, variable virtual impedance (VI) appears as a suitable solution for problem. The design basically rests on static considerations, while, its ...