Research On Grid-connected Inverter System Based On Deadbeat Control Algorithm

The alternative of traditional energy without delay, how high quality of new energy,distributed generation of solar and wind power on behalf of the electricity generated into thegrid to become a research hotspot. Conventional control technology in grid-connected invertersystem, a comparative study was selected based on deadbeat control algorithm ofgrid-connected inverter system as the main object of study. This article has primarily done asfollows:(1) Deadbeat control algorithm is a control algorithm depends on the circuit parameters usedin the inverter system modulation algorithm will lead to inconsistent structure of the deadbeatcontroller. In this paper, study the basic structure of the filter circuit and the modulationalgorithm based on the system to establish the different structures of the deadbeat controllerstructure.(2) With MATLAB / Simulink simulation, the overall efficiency of conventional LCL filterdesign method based on the LCL filter no difference on the beat control of grid-connectedinverter simulation. On this basis, the comparative study differential shot algorithm and theconventional PI algorithm output power quality, verify the superiority of the former.(3) Finally, the product of a recently developed model-based design (MBD: Model BasedDesign) the introduction of power electronics control algorithm design. Grid-connectedinverter system deadbeat control algorithm module basis, the algorithm software in the looptest (SIL: software-in-the-loop) with the hardware in the loop testing (HIL:Hardware-in-the-loop).And single-phase LCL filter and grid-connected inverter hardwareplatform, verify the correctness of deadbeat control algorithm design.