Solar power supply control system and control method

Abstract

The invention relates to a solar power supply control system, which comprises a solar photovoltaic panel, a storage battery, a direct current stable-voltage power supply and a controller, wherein the controller is connected with the solar photovoltaic panel, the storage battery and the direct current stable-voltage power supply and can control the on and off of the solar photovoltaic panel, the storage battery and the direct current stable-voltage power supply. The invention also relates to a solar power supply control method. In the method, when sunlight is sufficient, photovoltaic power is used preferably; when the voltage or current of the photovoltaic panel reduces to a preset value, the lead-acid storage battery is switched to and used; and the direct-current stable-voltage power supply is switched to only when both the photovoltaic power and the lead-acid storage battery can be used. In the invention, the solar power supply, the storage battery and the common stable-voltage direct-current power supply are integrated to form a diversified solar power supply system which can be switched automatically without disturbance, and the solar power supply system is free from the influences of weather conditions such as season turning, day and night alternation, weather change and the like.

Description

technical field [0001] The invention relates to a control system, in particular to a solar power supply control system. The invention also designs a solar power supply control system. Background technique [0002] Solar power supply systems are widely used, and the basic forms of solar power supply system applications can be divided into two categories: independent power generation systems and grid-connected power generation systems. The main fields of application are mainly in space vehicles, communication systems, microwave relay stations, TV relay stations, photovoltaic water pumps and household power supply in areas without electricity. With the development of technology and the needs of the sustainable development of the world economy, developed countries have begun to promote urban photovoltaic grid-connected power generation in a planned way, mainly building household rooftop photovoltaic power generation systems and MW-level centralized large-scale grid-connected po...

AI Technical Summary

Problems solved by technology

However, it cannot realize automatic switching and is inconvenient to use

[0005] However, the energy obtained by the existing solar power supply system is related to weather conditions such as four seasons, day and night, cloudy and sunny, which will affect the application and performance of the solar power supply system, and cannot give full play to the advantages of the solar power supply system.

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