Abstract- In this paper, a single-phase two-stage zerovoltage-
transition zero-current-transition pulse-widthmodulation
power-factor-correction (ZVT -ZCT -PWM-PFC)
AC/DC boost converter with active snubber cell is presented,
which can be interfaced with micro-hydro power plant and can
be used for telecommunication, data center, and commercial
building applications. Snubber cell facilitate all semiconductor
switches to undergo soft-switching for every switching period.
Proposed Converter operates in continuous-conduction-mode
(CCM) and uses average current control scheme for PFC. Nearly
unity-power-factor (UPF) operation is achieved for wide range of
load. Design and analysis of a ZVT-ZCT-PWM PFC boost
converter rated at 1 kW, output voltage 400 V, operating at 100
kHz, fed from AC voltage of 230 V RMS is presented. Proposed
schematic is simulated in PSIM 9.0 and simulation results are
provided. An efficiency of 97.8% and power factor above 0.998 is
achieved at nominal power.