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In power electronics efficiency improvement is constantly being sought out through venues such as improved topologies or improved devices. Series loaded resonant (SLR) DC-DC converter is a type of soft-switching topology widely known for providing improved efficiency. This paper investigates the efficiency and transient performance of SLR when a new type of diode called Super Barrier RectifierTM is...
Energy storage is playing an increasingly important role in the electrical power system thanks to the development and advance in various energy storage and power electronics technologies in recent years. The paper inquires into energy storage examining electrical energy storage devices, especially supercapacitors. Relative on these energy storage concerns, different dc/dc converters were analyzed...
High power density power electronics converters are increasingly demanded. Generally speaking, raised switching frequency improves the power density. However, dramatically increasing frequency on the present level still depends on the advance of power electronic components in material property, packaging technique, thermal management technique and etc. This paper surveys the recent material development...
Energy savings and the reduction of CO2 emissions is a main topic in todaypsilas power electronics research. Power electronics offers a wide potential for energy savings. This contribution deals with the benefits and the challenges of pre-regulated and post-regulated three-stage DC-DC converters in server applications. They are compared to a state of the art two-stage DC-DC converter. This publication...
In this paper, the axiomatic design is introduced for designing the power electronic converters. The main idea of axiomatic design is to introduce variables affecting the desired performances of the system most independently possible. The design process is presented for a Buck converter.
DC-DC converters under current-mode control have been known to exhibit slow-scale oscillation as a result of a Hopf-type bifurcation as one or more of the parameters of the outer voltage loop are varied. In the absence of the outer voltage loop (i.e., open loop), slow-scale oscillation was generally not observed in simple low-order dc-dc converters, i.e., buck, buck-boost, and boost converters. In...
The demand for decreasing cost and volume and also for increasing efficiency leads to a constantly increasing power density of converter systems. For maximising the power density of a 5 kW telecom supply an optimisation procedure that automatically balances the switching frequency, semiconductor and passive losses, and thermal performance has been developed. This procedure and the belonging analytical...
Integrated magnetics (IM) has been widely used in power electronics systems. A method to design IM has been proposed systematically. The rule to decide whether three and more discrete magnetic components can be integrated together is also proposed in this paper. A half bridge with current doubler converter and a single IM component are taken as an example to demonstrate the practical application of...
Integrated magnetics (IM) has been widely used in power electronics systems. A method to design IM has been proposed systematically. The rule to decide whether three and more discrete magnetic components can be integrated together is also proposed in this paper. A half bridge with current doubler converter and a single IM component are taken as an example to demonstrate the practical application of...
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