Research on key technologies of DC carrier chip applied in distributed photovoltaic scene

Four problems in the current monitoring and control process of distributed photovoltaic power generation are described: the lack of effective monitoring and shutdown means for module measurement, the harsh temperature environment of the power station, the complex carrier channel environment and the lack of DC carrier signal coupling technology. The design scheme of DC carrier chip is proposed, and innovation is made in the design of high dynamic analog front-end circuit, high precision temperature sensor and high performance DC coupling circuit equipment and improve on-site maintenance efficiency. The effectiveness of the innovative scheme is verified by mathematical model and software simulation.