Photovoltaic solar energy system, control method thereof, and computer-readable storage medium

Abstract

The present invention provides a photovoltaic solar energy system, a control method thereof, and a computer-readable storage medium. The method includes acquiring the output power and sampling current of the current sampling period and the previous sampling period, and obtaining the output power and sampling current of the current sampling period and the previous sampling period according to the output of the current sampling period and the previous sampling period. Power and sampling current determine whether the working environment is a multi-power extreme value environment; if it is confirmed that the current working environment is a multi-power extreme value environment, change the duty cycle of the pulse modulation signal by the preset first step length, and calculate each The output power corresponding to the duty cycle is searched for the target duty cycle of the pulse modulation signal corresponding to the maximum output power, and the duty cycle of the pulse modulation signal output by the DC converter is adjusted to the target duty cycle. The present invention also provides a photovoltaic solar energy system and a computer-readable storage medium implementing the above method. The invention can quickly find the duty ratio corresponding to the pulse modulation signal corresponding to the maximum output power, and can reduce the production cost of the photovoltaic solar energy system.

Description

technical field [0001] The present invention relates to the control field of photovoltaic solar energy systems, in particular, to a photovoltaic solar energy system control method, photovoltaic solar energy system and computer-readable storage medium applying the method. Background technique [0002] Photovoltaic solar system can convert solar energy into electrical energy, is an environmentally friendly system that utilizes renewable energy, and has gradually been widely used. The photovoltaic solar system is provided with photovoltaic modules, which include a large number of photovoltaic arrays, and the photovoltaic modules can convert solar energy into direct current. In the current mainstream and commercialized solar photovoltaic solar systems, the energy conversion efficiency of photovoltaic modules is not high, usually around 20%. However, in practical applications, due to the influence of environmental factors, the actual efficiency of photovoltaic solar systems is e...

AI Technical Summary

Problems solved by technology

These methods can improve the output power of photovoltaic arrays under partial shading conditions, but additional circuit configurations or corresponding lengthy calculations are required, which either increase the production cost of photovoltaic solar energy systems, or lead to huge calculations and excessive requirements for processors

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