The presented research was motivated by the E+grid project which aims at building an energy-positive public lighting microgrid using photovoltaic panels, LED luminaries that regulate their lighting levels based on motion sensor signals, energy storage, various sensors and smart meters, wireless commination and a central controller (see Figure 1). A prototype system was developed by an industry-...

Utilizing the combined cooling, heating and power generation (CHP) systems to produce cooling, heat and electricity is growing rapidly due to their high efficiency and low emissions in commercial and industrial applications. In conventional CHP systems the deficit of the system power can be purchased from the grid. However, this system cannot be used as the standalone application. The hybrid so...

Are more solar panels always better in terms of carbon influence a local energy community, and what is the impact sufficiency? The answer simple when national electrical grid taken as an infinite source storage. However, this becomes uncertain if we consider that exporting power to larger at scale not desired option. Although conservative hypothesis, it considered for technical social reasons. ...

An optoelectronic head-tracking system for head-mounted displays is described. The system features a scalable work area that currently measures 10' x 12', a measurement update rate of 20-100 Hz with 20-60 ms of delay, and a resolution specification of 2 mm and 0.2 degrees. The sensors consist of four head-mounted imaging devices that view infrared lightemitting diodes (LEDs) mounted in a 10' x ...

Workplace charging of electric vehicles (EV) from photovoltaic (PV) panels installed on an office building can provide several benefits. This includes the local production and use of PV energy for charging the EV and making use of dynamic tariffs from the grid to schedule the energy exchange with the grid. The long parking time of EV at the workplace provide the chance for the EV to support the...

Workplace charging of electric vehicles (EV) from photovoltaic (PV) panels installed on an office building can provide several benefits. This includes the local production and use of PV energy for charging the EV and making use of dynamic tariffs from the grid to schedule the energy exchange with the grid. The long parking time at the workplace provides the chance for the EV to support the grid...

This work proposes a framework to design cost-efficient unmanned aerial vehicle (UAV)-based energy-neutral (EN) system deployed harvest data from set of internet-of-things (IoT) nodes. The energy-neutrality refers the zero-sum balance between energy harvested, stored, and consumed during operation, which is game-changer when connection electricity grid not available/feasible. involves employing...

This study proposes a hybrid renewable energy system consisting of photovoltaic panels and wind turbine to supply the total or part demand grid-connected residential building presents optimal size using genetic algorithm. Wind speed, solar irradiance, electricity are monitored in 15 min intervals over year. It is found that values for PV panels’ area, rated power turbine, tower height 148.5 m2,...