DESIGN OPTIMIZATION OF RESONANT DC-DC CONVERTERS
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 5, Issue 4
Abstract
Resonant DC/DC converters are the class of converters, which have L-C resonant tank serving as a major part of the power conversion process. The fundamental concept of the resonant converter is that the circulating energy in an LC resonant circuit is manageable by changing the operating frequency, and therefore the converter can condition the input power to the desired output voltage. The development in power conversion technology is steady demand for high power efficiency and high power density. A high efficiency is achieved by using series resonant converter (SRC) topology. It may operate in either continuous or discontinuous conduction modes. After exploring the advantages of using a resonant converter, the series resonant converter is implemented. Increasing the frequency is desirable for power converters operation. However, the switching losses will increase by increasing the frequency of operation. Hence, the efficiency of the system reduces drastically. In order to reduce switching losses and increasing high frequency operation, a series resonant converter has been developed. The resonant tank of SRC consists of a resonant capacitor and a resonant inductor connected in series. The output load resistance is in series with the resonant tank and the impedance of the resonant tank is a function of the switching frequency, and hence the voltage across the output impedance can be modulated by the switching frequency.
Authors and Affiliations
Belqasem Aljafari
Keywords
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