SOFT-SWITCHING PWM TECHNIQUES AND THEIR APPLICATIONS

Abstract

M y , a nomber of soh-switching pulse-width-modulated ewM) catvener techniques have been propod, aimed at raa~hining the duinble futures of buh the c c m v d a u l PWM and resonant conveners while avoiding thdr rupenive l im i tah . In thia paper. four classes of soft-switching PWM conveners are reviewed, including the zcmvoltage-switched W S ) quui-squamwave conveners (QSCs), ZVS-PWM converters. z e r o c u m n t s ~ e d ( Z S ) PWM converten, a d zerc-vohge-msitim WT) PWM converters: their mwiu and limitations 11c assessed. h&ldlllalId I C d I S of 6 4 Pmotype Of m V e r t C r S SIC PrCSmted to i h W & tach &SS Of CUlVCItCFI.