Photovoltaic optimizer with integration of data communication function

The invention discloses a photovoltaic optimizer with the integration of a data communication function. According to the photovoltaic optimizer, a DC/DC converter controlled by a power/data double modulation strategy is employed, under the premise of not changing traditional photovoltaic optimizer power circuit topology, through superposing communication signal carrier wave at a traditional power adjustment link, data modulation is injected into a photovoltaic system DC bus, a receiving end samples output voltage and decodes data by using the corresponding DFT algorithm, and thus the communication between each photovoltaic optimizer and inverter is realized. Compared with the traditional technical scheme, according to the method of the invention, on the basis of not increasing circuit volume and cost, by using the communication function, the working of each photovoltaic optimizer and inverter is coordinated, and the power generation efficiency of a photovoltaic power generation system in a complex light condition is improved.