High-voltage gain magnetically coupled half-bridge Z-source inverter

In this paper, a new impedance-source inverter based on the half-bridge configuration is presented. The proposed topology has two switches that make four working modes. These operational modes are analyzed in detail, leading to obtaining the proposed topology's boost-factor. Besides, some equations are derived that are used to design passive elements such as capacitors and inductors. Besides, the voltage stresses on the switches and diodes are obtained. A comparative study from the boost-factor point of view is depicted, which shows that the proposed topology brings a high boost-factor at the output stage. By utilizing transformers, this topology gains a high boost-factor which can be adjusted by changing transformers' windings' turn. In addition to this comparison, other detailed comparisons show that the proposed topology has a reduced number of components with reduced voltage stresses on the passive devices. Finally, to verify the proposed topology's valid performance, a prototype is designed, and its results are studied.