Iran Energy Association (IEA) Journal of Energy Management and Technology 2588-3372 3 3 2019 09 01 A Single-Phase Grid-tied PV based Trans-Z-Source Inverter Utilizing LCL filter and Grid Side Current Active Damping 67 77 83609 10.22109/jemt.2019.169380.1150 EN Majid Hosseinpour Department of Electrical and Computer Engineering, University of Mohaghegh Ardabili, Ardabil, Iran 0000-0001-5074-4604 Navid Rasekh Department of Electrical and Computer Engineering, University of Mohaghegh Ardabili, Ardabil, Iran 0000-0001-9672-4457 Journal Article 2019 01 25 As grid-connected Photovoltaic (PV) based inverters are being used more, these systems play a more important role in the electricity generation by distributed power generators. Power injection to the grid needs to meet predefined standards. In this work, a PV based inverter consist of a Trans-Z-Source network performing as DC-DC power conversion level, is connected to the grid through a LCL filter. The connection through an LCL filter offers certain advantages, but it brings also the disadvantage of having a resonance frequency. A systematic mathematical design procedure for PR controller parameters along with active damping factor is presented and the overall control system leads to a considerably low value of grid current THD. Meanwhile the Maximum Power Point Tracking (MPPT) of the PV arrays is obtained by a modified INC method. Simulations in various conditions are carried out in MATLAB/Simulink environment and results depict suitable performance of the system with designed parameters. https://www.jemat.org/article_83609_6fcb57361450a66f9aab87d86a03293f.pdf