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Hybrid electrical power sources are one of the future trends in the area of power sources. They can be composed of many interacting components such as electrical generator sets with optimum variable speeds or constants speeds, photovoltaic sources with maximum power tracker, wind power generators, fuel cells and batteries. Hybrid electrical power sources initially developed and produced mainly for...
A means for power electronics to exploit the level of 3-D packaging already being implemented in compact consumer products, such as digital cameras, is investigated in order to increase its power density. The increase in functionality and usage of printed circuit board (PCB) in power electronic converters is highlighted and improvements proposed to boost PCB usage to the next level. The material and...
Rural area often has only one transmission line in connection with main power grid. The safety of critical load cannot be insured. Instead of adding a second transmission line, distributed generation can be installed. In this paper, a hybrid power system is analyzed. It is composed of solar power, wind farm of doubly fed induction generators (DFIG), pumped storage station, residential load and industry...
Today, doubly fed induction generator (DFIG) gains the dominant market power in the wind energy industry. It provides the benefits of variable speed operation cost-effectively, and can control its active and reactive power independently. Crowbar protection is often adopted to protect the rotor side voltage source converter (VSC) from transient over current during grid voltage dip. But under unsymmetrical...
New generation of mobile electrical power sources is based on the historical change from constant speed, determining the required frequency, to the optimally changed engine and generator speed. The constant frequency and required voltage value is achieved by means of power electronics voltage and frequency converter. The paper brings some new analyses of efficiency investigations of mobile power sources...
The implementation of flexible printed circuit technology in power magnetic winding design is investigated. At first this implementation is considered as a stand-alone winding technology for discrete magnetic components and thereafter it is applied as an integral winding technology, enabling enhanced manufacturing possibility for an integrated 3D converter concept, discussed herein. Optimisation of...
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