By Fang Lin Luo, Hong Ye
DC/DC conversion thoughts have passed through fast improvement in contemporary a long time. With the pioneering paintings of authors Fang Lin Luo and Hong Ye, DC/DC converters have now been taken care of into their six generations, and via a coarse count number, over 500 diverse topologies presently exist, with extra being built each one year.Advanced DC/DC Converters deals a concise, sensible presentation of DC/DC converters, summarizing the spectrum of conversion applied sciences and featuring many new principles and greater than a hundred new topologies. The therapy starts off with historical past fabric on DC/DC conversion and discussions on voltage elevate and super-lift converters. It then proceeds via each one iteration, together with the groundbreaking 6th generation--converters built by way of the authors that may be cascaded for prime voltage move achieve. greater than 320 figures, 60 tables, and 500 formulae let you extra simply clutch the general constitution of complex DC/DC converters, offer quick entry to express facts, and assist you fast confirm the values of your individual circuit elements. Nowhere else within the literature are DC/DC converters so logically looked after and systematically brought. Nowhere else are you able to locate particular details on prototype topologies that characterize an enormous contribution to fashionable energy engineering.
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Extra resources for Advanced DC/DC Converters
3a and b. 3 The second-quadrant chopper. where T is the repeating period T = 1/f, f is the chopping frequency, toff is the switch-off time toff = T – ton, and k is the conduction duty cycle k = ton/T. 4a and b. All voltage polarity is defined in the figure. 4 The third-quadrant chopper. where ton is the switch-on time, and k is the conduction duty cycle k = ton/T. 5a and b. All voltage polarity is defined in the figure. 4) where toff is the switch-off time toff = T – ton, time, and k is the conduction duty cycle k = ton/T.
28 Push-pull converter. 2 Push-Pull Converter The boost converter works in push-pull state, which effectively avoids the iron core saturation. 28. Since there are two switches, which work alternately, the output voltage is doubled. 13) where N is the transformer turn ratio, and k is the conduction duty cycle k = ton/T. 3 Fly-Back Converter The fly-back converter is a transformer type converter using the demagnetizing effect. 29. 14) where N is the transformer turn ratio, and k is the conduction duty cycle k = ton/T.
9. Switch S and diode D are alternately on and off. Usually, the buck pump works in continuous operation mode, inductor current is continuous in this case. 10. Switch S and diode D are alternately on and off. The inductor current is usually continuous. 11. Switch S and diode D are alternately on and off. Usually, the buck-boost pump works in continuous operation mode, inductor current is continuous in this case. 9 Buck pump. 10 Boost pump. 11 Buck-boost pump. All developed pumps consist of four components: a switch S, a diode D, a capacitor C, and an inductor L.