Z-H converter

Abstract

Inspirited by the Z-source inverter, a new power converter (named as Z-H converter) is presented in this paper. The basic operating principle of Z-H converter and Z-source inverter are similar and they have the same equations in boost mode. The new converter employs an impedance network similar to that in the Z-source inverter but with different connection. Therefore the new topology has different features compared to the Z-source inverter. There's no shoot-through switching state in the Z-H converter and the front end diode is eliminated. The Z-H converter can be applied to dc-dc, dc-ac, ac-dc, and ac-ac power conversion. A Z-H dc-dc converter will be presented in the paper as an example to show the operating principle, and the extensions to dc-ac, ac-dc, and ac-ac power conversion are also introduced. The simulation and experimental results verified the analysis and demonstrated the great potential of the Z-H converter.