A new high step-up DC-DC converter using voltage lift techniques suitable for renewable applications

This paper presents a non-isolated DC-DC boost converter using voltage lift techniques. The proposed structure offers a continuous input current. Substantial voltage gain alongside low voltage stress across semiconductors in this topology contribute to utilizing a MOSFET with lower Rds-on and devices with low nominal voltage values. Consisting of a switch makes the control procedure of the converter uncomplicated. The voltage analysis for the converter has been done in continuous and discontinuous conduction modes (CCM)-(DCM). Furthermore, the current calculation, design process and comparison study are provided. The dynamic performance of the proposed circuit is scrutinized by applying the state space average technique and small signal model. In order to accredit the performance of the converter, an archetype with 26V input and 222V output voltages and approximately 196W power level at 50 kHz switching frequency has been built and tested.