This paper presents a quantitative design procedure and control method for the two two-stage single single-phase grid grid-connected photovoltaic (PV) system implemented with the DSP control board. The proposed system employs the full full-bridge D DC-DC converter as a pre pre-stage to track the maximum power point (MPPT) of the PV modules. The PV power is then fed to the utility with high power factor through the full full-bridge inverter. Power balance of two stages is controlled by the inverter via the regu regulation of the DC lation DC-link voltage. The detailed model of the DC DC-DC converter and inverter under MPPT control is derived first. Accordingly, the quantitative controller design method is proposed. An adaptive control technique is presented to track the maximum p power of the PV modules fast and precisely. Ower Finally, a 2kVA prototype system is built, the controller is implemented with the DSP (TMS320F/C2407) control board. Some simulation and experimental results are provided to demonstrate the effectiveness of the pr proposed techniques.
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