The DC Bus Converter is a novel approach for isolated DC-DC converters that improves power delivery for next generation Networking & Communications systems. It will be shown through the use of innovative technologies and a novel control scheme, how a new, more optimal approach can be completed for isolated DC-DC converter designs in Networking & Communications end systems. The DC Bus Converter ...

This paper presents the design and simulation of a Full Bridge Soft Switched DC-DC Converter, working with an internal frequency of 20khz with an output power of 5kw. Since the ZVS range is independent of the switch capacitance, IGBT’S are used by adding the external capacitors to the switches without increasing the switching losses. However, it is not easy to design a hard-switched converter s...

The boost topology is the most popular topology used in power factor correction circuits. The efficiency and performance of the boost converter depends on the switching frequency affecting the switching losses. At high frequency operations the switching losses of the converter is considerable and decreases the efficiency of the converter. To remove this problem the converter is designed to oper...

Stable isotopes of faeces contain information related to the animals feeding ecology. The use of stable isotope values from subfossil faeces as a palaeoenvironmental indicator depends on how faithfully the animal records their local environment. Here we present insectivorous bat guano dC and dN values from a precipitation gradient across the southern United States and northern Mexico to compare...

Transferring collagen-pulsed, bone marrow-derived dendritic cells (DCs) into congenic DBA/1 recipient mice produced arthritis in joints adjacent to the site of DC transfer and could be inhibited by treatment with TNF antagonists. Disease was Ag specific, as transfer of control, unpulsed DCs, or DCs pulsed with OVA did not produce arthritis. In contrast to other experimental arthritis models, DC...

OBJECTIVES Hypothermia and decompressive craniectomy (DC) have been shown to be neuroprotective. This study was designed to evaluate neuroprotective effects of delayed singular or combination of DC and local hypothermia on stroke. MATERIALS AND METHODS Cerebral ischemia was induced in 48 Wistar rats assigned to 4 groups: control, decompressive craniectomy (DC), local hypothermia (LH), combina...

The proposed zero-current switching switched-capacitor (ZCS SC) DC-DC converter is an innovative bi-directional power flow control conversion scheme. A zero-current switching switched-capacitor stepup/step-down bi-directional converter is presented that can improve the current stress problem during bi-directional power flow control processing. It can provide a high voltage conversion ratio of n...

Results about energy capture from the environment associated with the self-powering of a wireless sensor network (WSN) for structural health monitoring of aircrafts (SHM) are presented. Thermal gradients taking place during specific flight phases are converted into electrical energy by using a small water tank coupled to a thermoelectric generator which output is connected to a storage circuit....

As the deployment of distributed generation continues, an increasing number of DC/AC power inverters will be interfaced into the electric grid. Groupings of these power inverters, along with distributed storage and load, are referred to as microgrids. Microgrids offer the potential for unprecedented reliability and flexibility, but also pose new control challenges. Inverters in microgrids must ...