AC-link universal converters are new topologies that can be used for power conversion from any type of source to any type of load. Usage of these converters results in enhancing the reliability by employing small film capacitors instead of bulky unreliable electrolytic ones. Furthermore, such converters have a high power density due to the possibility of using compact high-frequency transformers when isolation is needed. This digest proposes a soft-switching zeta-based universal converter. In comparison to Cuk-based and buck-boost-based converters, this topology uses a capacitor with a lower voltage rating and an inductor with a lower peak current.
