Transformerless cuk derived high boost DC-AC converter for dual PV applications simulation study

This paper presents a 3-level neutral-point-clamped high boost transformerless dc-ac converter for dual photovoltaic applications. General operation waveforms and operation principles are described. Basic processes involved and converter dimensions result from the steady state analysis and the calculation of general component values. Theoretical assumptions are verified by PSIM. Simulation results show the general operation principles and waveforms of the proposed converter. Finally, main areas of application of the converter and the efficiency achievable are discussed.