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

A photovoltaic solar energy and control method technology, which is applied in the control field of photovoltaic solar energy systems, can solve the problems of adding extra circuit configuration and calculations, excessive processor requirements, and increasing production costs of photovoltaic solar energy systems, so as to achieve the maximum point of high-efficiency power and reduce The effect of production costs

Active Publication Date: 2021-06-04
GREE ELECTRIC APPLIANCES INC
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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

Method used

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

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Embodiment Construction

[0036]The photovoltaic solar energy system control method of the present invention is applied to a photovoltaic solar energy system. Preferably, the photovoltaic solar energy system has a controller, a photovoltaic module, and a DC converter, and the controller can output signals to the DC converter so as to adjust the pulse modulation signal output by the DC converter. Duty cycle, so as to change the input voltage loaded to the photovoltaic module, so that the photovoltaic module works at the point of maximum power, thereby improving the energy conversion efficiency of the photovoltaic solar energy system. Preferably, the controller is provided with a processor and a memory, and a computer program is stored in the memory, and the processor implements the above photovoltaic solar energy system control method by executing the computer program.

[0037] Embodiment of photovoltaic solar energy system control method:

[0038] see image 3 and Figure 4 , first execute step S1, c...

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Abstract

The invention provides a photovoltaic solar system, a control method thereof and a computer readable storage medium, and the method comprises the steps of: acquiring the output power and sampling current of a current sampling period and a previous sampling period; judging whether the working environment is a multi-power extreme value environment or not according to the output power and the sampling current of the current sampling period and the previous sampling period; if it is confirmed that the current working environment is a multi-power extreme value environment, changing the duty ratios of pulse modulation signals at a preset first step length, calculating the output power corresponding to each duty ratio, searching the target duty ratio of the pulse modulation signal corresponding to the maximum output power, and adjusting the duty ratio of the pulse modulation signal output by a DC converter to the target duty ratio. The invention further provides a photovoltaic solar system for implementing the method and a computer readable storage medium. According to the invention, the duty ratio corresponding to the pulse modulation signal corresponding to the maximum value of the output power can be quickly searched, and the production cost of the photovoltaic solar system can be reduced.

Description

technical field [0001] The present invention relates to the control field of photovoltaic solar energy systems, in particular, a photovoltaic solar energy system control method, a photovoltaic solar energy system applying the method, and a computer-readable storage medium. Background technique [0002] Photovoltaic solar energy system can convert solar energy into electrical energy. It is an environment-friendly and renewable energy system, and it has gradually been widely used. The photovoltaic solar energy system is provided with photovoltaic modules including a large number of photovoltaic arrays capable of converting solar energy into direct current. In current mainstream and commercialized solar photovoltaic solar energy 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 energy systems is lower th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 宋泽琳雷龙翟志伟朱永强宋晓玥魏兵戌
Owner GREE ELECTRIC APPLIANCES INC
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