Published Paper Details:

The rapid growth of photovoltaic (PV) systems has led to an increased demand for efficient and reliable power inverters that can effectively convert DC power generated by PV modules into AC power for grid integration. Power inverters for distributed photovoltaic (PV) power generation systems usually need to fulfill several requirements, such as safety, voltage boost capability, and the reduced volume and the cost. An improved switched inductor based quasi-single stage transformerless inverter with four switches is presented and analysed here. The inverter features double grounded to solve potential safety issues caused by the leakage current. Mitigating leakage current effects is vital to enhance the performance, efficiency, and safety of PV inverter systems. The circuit also features low stress across the components and have improved gain. Its voltage boosting is accomplished by a quasi- single-stage conversion structure so that PV system efficiency can be improved. Meanwhile, it benefits con- tinuous input current so is suitable for PV application. Inverter is further studied and simulated using MATLAB/SIMULINK 2021b, required results are obtained. The voltage and current stresses of the components are analyzed, and parameter design guideline is further given. The simulation results shows that the inverter achieves a peak efficiency of 90%T? he hardware prototype of inverter is implemented to verify the performance and operation of the circuit using the dSPACE controller .