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The paper presents the work that has been carried out trying to improve the behavior and the performances of DC to DC step up converters with high conversion ratio. Especially, it is studied how the design and the realization of the magnetic HF transformer can be improved in order to increase the global efficiency of hard switch isolated DC to DC converters. It is shown that a split in conductors...
In this paper, a new bidirectional three-phase dc-dc converter and three-phase PWM strategies have been proposed for battery application. The proposed converter acts as an three-phase isolated buck converter when battery is charged from dc link (buck mode) and an three-phase isolated boost converter when battery discharges energy (boost mode). In the buck mode, three-phase hybridge rectifier is employed...
With the shortage of the energy and ever increasing of the oil price, research on the renewable and green energy sources, especially the solar arrays and the fuel cells, becomes more and more important. How to achieve high step-up and high efficiency DC/DC converters is the major consideration in the renewable grid-connected power applications due to the low voltage of PV arrays and fuel cells. The...
In the last decade there has been a tremendous growth in the number of data centers due to the increasing demand for Internet services. At the same time, the cost for energy and materials have increased because of reducing resources and increased demand. That has caused a change in the driving forces for new power supply development, with more consideration on power density and efficiency. The commonly...
Fuel cell systems often require high voltage gain and dc-dc step-up converter is a critical part. Scope of this paper is integration of inductor and transformer on a single core. Usage of integrated magnetics improves utilization of magnetic core and thus size and weight of the converter may be reduced.
Hybrid vehicles are a characteristic feature of the daily traffic yet, with growing fuel costs and other factors increasing their importance in the nearest future even more. Nevertheless, hybrid vehicles are not a mass product up to now. Although the life cycle costs of the hybrid cars are usually smaller than the costs for comparable fuel vehicles, the main purchase criteria for vehicles are still...
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