Grid-connected inversion control device and grid-connected power generation system

Abstract

The invention discloses a grid-connected inversion control device. The grid-connected inversion control device comprises an inversion module, a control module, an input end and an AC output end, wherein the control module comprises a DC convergence unit and an AC power distribution unit, the inversion module is electrically connected with a DC input end through the DC convergence unit and electrically connected with an AC output end through the AC power distribution unit, the DC convergence unit is used for converging and transmitting direct current input from the DC input end to the inversion module, the inversion module is used for converting the direct current transmitted from the DC input end to alternating current, the AC power distribution unit is used for transmitting the alternating current after conversion of the inversion module to the AC output end, and the inversion module and the control module are of an integrated structure. With the above grid-connected inversion control device, the power efficiency of a grid-connected power generation system can be improved. The invention also discloses the grid-connected power generation system.

Description

technical field [0001] The invention relates to the technical field of grid-connected power generation control, in particular to a grid-connected inverter control device and a grid-connected power generation system. Background technique [0002] The distributed photovoltaic grid-connected system consists of photovoltaic modules, photovoltaic supports, DC combiner boxes, grid-connected inverters, and AC distribution boxes. Photovoltaic modules directly convert solar energy into DC power, which is combined through a DC combiner box. The converging DC power is converted into AC power required by the load after being inverted by the grid-connected inverter, and finally passes through the AC distribution box to connect the photovoltaic system to the grid. [0003] In the traditional photovoltaic grid-connected system, the grid-connected inverter and the AC distribution box are designed separately, and the grid-connected inverter and the AC distribution box need to be connected t...

AI Technical Summary

Problems solved by technology

However, when the distance between the grid-connected inverter and the AC distribution box is relatively long, the connecting cable between the two will be relatively long, which will greatly reduce the power generation of the photovoltaic system and affect the power generation efficiency of the photovoltaic grid-connected power generation system.

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