A Novel Load Adaptive ZVS Auxiliary Circuit for PWM Three-Level DC-DC Converters

A Novel Load Adaptive ZVS Auxiliary Circuit for PWM Three-Level DC–DC Converters Abstract: Three-level PWM dc-dc converters convert high dc voltage (>500 V) generally at the output of a three-phase ac-dc PWM rectifier in ac-dc converters to an isolated dc output voltage which can be used to power data center loads. Strict efficiency requirements at […]


An Integrated High-Power-Factor Converter with ZVS Transition

An Integrated High-Power-Factor Converter with ZVS Transition Abstract: This paper proposes a single-phase high-powerfactor ac/dc converter with soft-switching characteristic. The circuit topology is derived by integrating a boost converter and a buck converter. The boost converter performs the function of power-factor correction (PFC) to obtain high power factor and low current harmonics at the input […]