| Summary: | 碩士 === 大同工學院 === 電機工程研究所 === 81 === In this thesis , a comprehensive analysis of the buck zero-
voltage-transition (ZVT) pulse-width-modulated (PWM) coverter
is presented . Both active and passive switches achieve zero-
voltage switching without significantly increasing their
voltage and current stresses . Due operation under the
constant frequency , the optimization of the circuit is easily
attainable . A novel control approach is introduced . The
approach is simple and provides switches with switching. Using
results of the dc analysis and dc conversion ratios, a design
procedure with the switching property is proposed , and is
used to build prototype circuit operating at the switching
frequency 296KHz . It has been proven useful for design and
when the ZVT PWM converter is implemented at higher frequencies.
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