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Usage of power converters in a vast variety of equipments from cellphones, laptops to automobiles, aeroplanes and satellites is increasing. Different synchronous buck converter configurations are considered in this work using Silicon (Si) devices and Gallium Nitride (GaN) devices of equal current ratings. The performance of these converters in terms of power losses and overall efficiency are compared...
This paper presents the design of passives for an ultracapacitor (UC) based dc-dc power supply which provides energy backup to critical loads in case of momentary power main failures. Unlike in a typical bidirectional dc-dc converter, in a UC based bidirectional converter, the interfacing inductor design has to accommodate both charging and discharging operations for wide variations in UC stack voltage,...
The control of an ultracapacitor (UC)-based dc–dc power supply is crucial to provide reliable energy backup to critical loads in the case of momentary power main failures. In this regard, smooth and seamless transition between charging and discharging controls of UC stack is of paramount importance. For ride-through applications where charging and discharging times are critical, provision of different...
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