Sunday, December 8, 2013

Capacitor Switched Regenerative Snubber Ckt for Dc/Dc Boost Converter

1. INTRODUCTION High- government agency dc/dc converters atomic number 18 a authoritative component of todays emerge vehicular technologies much(prenominal) as hybrid-electric, battery-electric, and evoke-cell vehicles. Typically, a voltage rising vend is inevitable to maltreat up the low voltage of the fuel cell or battery to the gamey voltage required by the grip motor inverter. For these it is necessary that the size and jam of the converter should be small to facilitate packaging. This is due to the amplyer(prenominal) military group parsimoniousness and to provide higher fuel deliverance due to cut down vehicular spile. Furthermore, the converter should give birth a simple aim with high-efficiency operation over the good load range. The large peaceful components utilise in high-power dc/dc get up converters, specifically the large boost inductor, comprise a major(ip) part of the mass of the converter. Higher absolute frequency operation helps in reduci ng the size of the passive components. exactly there are 2 major obstacles to achieving high-frequency operation of the high power dc/dc converters. First, the switching losses growth proportionally with the increase frequency, which reduces the converter efficiency and increases the chill requirements. A large cooling system adds to the overall cost and mass of the converter system.
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Second, the high power insulated gate bipolar transistors (IGBTs) used in these converters are limited to hard-switching operation at nearly 30 kilohertz or less , depending on the power level. In pose to overcome all these drawb acks possessed by the conventional dc/dc boo! st converters, these are replaced by the capacitor switched regenerative snubber circuited dc/dc boost converters A.BASIC CONCEPTS OF CONVERTERS Converter is an electronic circuit which converts a source of alternating or get off current (AC or DC) from one voltage level to another. It is a class of power converter. DC/DC converters can be classified into two types. They are: a) boost converters b) buck converters. A boost converter (step-up converter) is a DC-DC...If you want to get a full essay, align it on our website: BestEssayCheap.com

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