The quasi-Z-source inverter (qZSI) become one of the most promising power electronic converters for photovoltaic (PV) applications, due to its capability to perform a buck-boost conversion of the input voltage in a single stage. The control strategy based maximum power point tracking (MPPT) and proportional integral (PI) controller are well known in grid-connected with traditional configuration but not in qZSI. This paper presents a control strategy for qZSI grid-connected based on the MPPT algorithm and the linear control by PI controllers. This is complemented by the capability to efficiently transfer the harvested power to the grid, ensuring a unity power factor. The proposed control strategy effectively separates the control mechanisms for the direct current (DC) and alternating current (AC) sides by utilizing the two control variables, the shoot-through duty ratio and the modulation index. An adapted space vector modulation technique is then utilized to generate the switching pulse width modulation (PWM) signals, using these two control variables as inputs. The proposed approach was tested and validated under MATLAB/Simulink and PLECS software.


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    Title :

    Maximum power point tracking and space vector modulation control of quasi-z-source inverter for grid-connected photovoltaic systems


    Contributors:

    Publication date :

    2024-04-01


    Remarks:

    doi:10.11591/ijece.v14i2.pp1424-1436
    International Journal of Electrical and Computer Engineering (IJECE); Vol 14, No 2: April 2024; 1424-1436 ; 2722-2578 ; 2088-8708 ; 10.11591/ijece.v14i2



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629