Design and Implementation of Digital Control of Photovoltaic Power Inverter

Inverter grid-connected PV system as a network interface with the main equipment, the control technology has become a research hotspot. Based on the theoretical analysis, a brief introduction of photovoltaic grid-connected inverter system structure and working principle, a linear control model of the inverter, the focus of the working conditions of its control grid design and Digital Realization process. Proposed to achieve zero steady state error conditions for sinusoidal current control, the use of band-pass filter type BPFM (Band-Pass Filter Mode) controller and inverter output current control, achieve high performance inverter Grid. Digital signal processor with TMS320LF2407A (DSP) as the controller design and simulation of the system parameters to achieve the small photovoltaic inverter good control.