Research On The Optimal Control Strategy Of Multi-inverter PV Power Generation System

The paper conducts the improvement research to the existing distributional generating system.This article bends down emphatically to the light the system composition and the structure, the maximum work rate track, the existing light bends down aspects and so on generating system type and key technologies carries on the detailed analysis and the theory discussion, proposed in this foundation the improvement distributional light bends down the electricity generation structure and the corresponding control strategy, and carries on the simulation confirmation.The main research content may induce into following several points:First, established the light to bend down the array simulation model, studied the light to bend down an array light volt nature, has bent low in the generating system in the existing light in the maximum work rate track algorithm foundation, proposed changed the length of stride the perturbation method of inspection, and has carried on the simulation module build and the simulation analysis, the system performance had the effective improvement, the problem which solved which the fixed length of stride to have created the track speed and the precision simultaneously guaranteed with difficulty.Second, has carried on the analysis to the cocurrent-direct-current converter and the invertor principle of work, chose in this foundation has suited the light which this article designed to bend down the system Boost converter, and has given the meticulous design variable and the simulation result.Third, this article bends down the incorporation generating system insufficiency in view of the distributional light, improved the existing distributional light to bend down the generating system, used the group control strategy, and carried on the lamination grouping control to the system, not only reduced the overall system control difficulty, likewise enhanced the system flexibility.At the same time, this system enhanced the transfer efficiency greatly, increased the system safety movement ability.Fourth, this article gives the parallel switch throws cuts the control the simulation chart and the light bends down the systems control simulation result, confirmed this system can effectively dispose the light to bend down reasonably the array output, specially in the dark clouds weather, can appear this system the superiority.