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The quasi-Z-source inverter (QZSI) has been presented suitable for solar photovoltaic applications mainly because of its one stage buck/boost capability and improved reliability. Carefully designed closed-loop control strategy is usually demanded by QZSI in photovoltaic applications for voltage boost, grid-connection and the maximum power point tracking (MPPT). Cascaded QZSI as to further step up...
This paper presents a hybrid control strategy for photovoltaic (PV) simulator, which emulates the output characteristics of PV arrays under different irradiation, temperature, and loads. The mathematic modeling of the I-V curve of PV arrays is investigated in this paper, and accordingly the voltage control or current control method is worked out for different segments of PV output characteristics...
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