Photovoltaic inverter power saving control system and method

Abstract

The invention relates to a photovoltaic inverter power saving control system and a method. The system comprises a solar panel, power modules and a controller; the controller comprises a power port, a detection circuit, a micro-processing module and a drive circuit; the detection circuit is connected with the solar panel and the power modules and is used for detecting the port voltage of the solarpanel, light intensity and the output power of the power modules; the micro-processing module is connected with the detection circuit and can generate control signals for controlling the power modules to turn on in the morning or turn off in the evening according to the port voltage of the solar panel, the light intensity and the output power of the power modules; and the drive circuit is connected with the micro-processing module and is used for latching and transmitting the control signals for controlling the power modules to turn on or turn off to the power modules. Since the invention cancontrol a photovoltaic inverter to turn on in the morning and turn off in the evening, the power consumption of the photovoltaic inverter in the standby state can be reduced, each power module of thephotovoltaic inverter can rest at night, and thereby the service life of the photovoltaic inverter can be prolonged.

Description

technical field [0001] The invention relates to inverters, in particular to a photovoltaic inverter power-saving control system and method. Background technique [0002] The photovoltaic inverter market has very strict requirements on the inverter's standby power consumption at night. With the continuous improvement of energy-saving requirements, the standby power consumption requirements are getting lower and lower. At present, there are few smart modular photovoltaic inverter products in the market. Since modular photovoltaic inverters adopt decentralized parallel technology, the pros and cons of night power-saving solutions are an important indicator to measure inverters. [0003] Most of the existing energy-saving methods adopt the technology of turning off the electronic switch. Although the energy-saving effect is achieved, the auxiliary power supply still runs at no-load at night, which still consumes a certain amount of energy. Contents of the invention [0004] T...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing energy-saving methods adopt the technology of electronic switch off. Although the energy-saving effect is achieved, the auxiliary power supply still runs at no-load at night, which still consumes a certain amount of energy.

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