In this paper, a design for a portable-charging Tshirt that utilizes flexible solar cells is proposed. The flexible solar cells are tested in various conditions to determine the best arrangement and design for the shirt. Different filters, circuit configurations, shade levels, angle degrees, and numbers of panels are experimented to collect data about the efficiency of the flexible panels being...

Wi-Fi devices used for voice over IP (VoIP) or other real-time applications that are WiFi Certified for WMM Power Save will have a substantially longer battery life, according to analyst Monica Paolini, president of Senza Fili Consulting. Estimating a 15to 40-percent improvement, Paolini says this is an important consideration for cell phone users who, unlike laptop users, don't usually have a ...

The recent and massive investments in Electric Vehicles (EVs) reveal a change of paradigm in the transports sector and the proliferation of EVs will contribute to an effective reduction in the emissions of greenhouse gases. Nevertheless, for the electrical power grids EVs will be extra loads, which will require the demand energy to charge their batteries. With the advent of the Smart Grids, bes...

This paper proposes a co-design optimization procedure of high-power off-board charger for electric vehicle (EV) applications. The primary purpose is to design 175 kW SiC DC-charging system with high power density achieve efficiency at wide operating range. For the active part DC charger, three-phase front end (AFE) rectifier topology considered in and modelling. methodology focuses on optimal ...

In DC and hybrid microgrids (MG), the DC-bus regulation using Energy Storage Devices (ESD) is important for the stable operation of both the generators and loads. There are multiple commercial voltage levels for both ESD and DC-bus; therefore, the ESD voltage may be higher, equal or lower than the DC-bus voltage depending on the application. Moreover, most of the ESD converter controllers are l...

This Wireless Mobile Battery Charger project is using technique of inductive coupling. The basic concept of his technique was applied in transformer construction. With this technique, the power from AC or DC can be transfer through the medium of magnetic field or air space. In this project, the method is divided into two major activities which is to purpose circuit construction and to fabricate...