A High Step-Up DC-DC Converter with Active Switched LC-Network and Voltage-Lift Circuit

فاقد چكيده فارسي

In this paper, a high step-up DC-DC converter using active switched LC- network and voltage-lift circuit is proposed. This converter can be applied to increase the low output voltage of distributed energy resources such as photovoltaic systems (PV) to the required DC bus voltage. The Voltage-Lift circuit is utilized in the proposed transformerless converter with active switched LC- network which increased the voltage gain efficiently with only one extra diode and capacitor. The functioning method of the proposed converter as well as the voltage and current relations of each component are extracted in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). In addition, the analysis of steadystate condition and performance comparison of the proposed converter with some ASL network-based converters are illustrated. The performance of the proposed step-up converter is analysed and simulated in the PSIM environment. The results depict suitable operation of proposed converter as well as good agreement between theoretical relations and converter performance.