By Fang Lin Luo, Hong Ye
DC/DC conversion options have passed through swift improvement in fresh 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 by way of a coarse count number, over 500 diverse topologies at present exist, with extra being built each one year.Advanced DC/DC Converters deals a concise, useful presentation of DC/DC converters, summarizing the spectrum of conversion applied sciences and providing many new rules and greater than a hundred new topologies. The remedy 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 constructed by means 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 take hold of the final constitution of complex DC/DC converters, supply quickly entry to express information, and assist you quick confirm the values of your individual circuit parts. Nowhere else within the literature are DC/DC converters so logically taken care of and systematically brought. Nowhere else are you able to locate precise details on prototype topologies that symbolize an incredible contribution to trendy strength engineering.
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Extra info for Advanced DC/DC Converters
This state is called the reverse regenerating operation quadrant IV operation. 1. Choppers can convert a fixed DC voltage into various other voltages. , the firstquadrant chopper or “A”-type chopper. In the following description we use the symbols Vin as the fixed voltage, Vp the chopped voltage, and VO the output voltage. 2b. The switch S can be some semiconductor devices such as BJT, IGBT, and MOSFET. 2 The first-quadrant chopper. where T is the repeating period T = 1/f, f is the chopping frequency, ton is the switch-on time, k is the conduction duty cycle k = ton/T.
The class-D converter works in quadrant III and VI operation, which corresponds to the reverse-running motoring and regenerative braking operation of a DC motor drive. The class-E converter works in four-quadrant operation, which corresponds to the four-quadrant operation of a DC motor drive. In recent years many papers have investigated the class-E converters for industrial applications. Multi-quadrant operation converters can be derived from the first generation converters. For example, multi-quadrant Luo-converters are derived from positive-output Luo-converters and negative-output Luoconverters.
Their gain usually depends on the transformer’s turn ratio N, which can be thousands times. 1 Forward Converter A forward converter is a transformer-type buck converter with a turn ratio N. It works in first quadrant operation. 26. 25 Buck-boost converter. 26 Forward converter. where N is the transformer turn ratio, and k is the conduction duty cycle k = ton/T. In order to exploit the magnetic ability of the transformer iron core, a tertiary winding can be employed in the transformer. 27. 27 Forward converter with tertiary winding.
Advanced DC/DC Converters by Fang Lin Luo, Hong Ye