in this paper, photovoltaic (pv) grid-connected inverter which is the core device in pv grid-connected system has been in depth research.an improved predictive current controller has been developed by the authors for single-phase grid-connected voltage source inverters (vsi).based on dsp tms320lf2407a, a 10 kw single-phase grid-connected inverter has been built in this paper.thus is aimed at us...

Due to the simple structure, high torque density, low maintenance, and high efficiency, brushless direct current (BLDC) motors are widely used in automation and industrial applications. A control strategy based on single current sensor is proposed for a four-switch three-phase BLDC motor system to lower cost and improve reliability. The whole working process of the BLDC motor is divided into si...

Network monitoring has became a significant part of network management. Each environment and type of network have their specific, different needs. To allow network traffic monitoring in various environments, a necessity of flexible approach thus grows. The current generation of flow collectors provides only a limited flexibility, mainly due to limits of their data storage formats. Moreover, it ...

Although connected devices and smart homes are now marketed to average consumers, little is known about how access-control systems for these devices fare in the real world. In this paper, we conduct three case studies that evaluate the extent to which commercial smart devices provide affordances related to access control. In particular, we examine an Internet-connected lighting system, bathroom...

with increasing the presence of microgrids (mgs) in the power systems, investigating the mg stability during transient faults is necessary. this study investigates the transient stability analysis of a mg supplied by multiple inverter interfaced distributed generations (iidgs) during fault. the transient stability of a mg is highly depends on the iidgs control strategy. a mg, simulated on matla...

While technological innovations over the last thirty years have markedly improved the ways in which people communicate and gather information, these advances have also led to computer crimes and related deviance becoming permanent fixtures in our society. In an effort to curtail internet offending, it is important for academics and practitioners alike to better understand why some individuals e...

The current art in optimal combinatorial auctions is limited to handling the case of single units of multiple items, with each bidder bidding on exactly one bundle (single minded bidders). This paper extends the current art by proposing an optimal auction for procuring multiple units of multiple items when the bidders are single minded. The auction minimizes the cost of procurement while satisf...