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Photovoltaic power generation control method, device and system

A photovoltaic system and photovoltaic power generation technology, applied in the field of electronics, can solve the problems such as the inability to maintain the output power of the photovoltaic system, and achieve the effect of improving power generation efficiency and precise adjustment

Active Publication Date: 2020-04-10
HUADIAN ZHILIAN XINDA TECH BEIJING CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under different circumstances, the internal resistance of the photovoltaic panel will change continuously, so the final output power of the photovoltaic system may not actually maintain the output power of the photovoltaic system at the maximum power point.

Method used

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  • Photovoltaic power generation control method, device and system
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  • Photovoltaic power generation control method, device and system

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Embodiment Construction

[0044] In order to better understand the technical solutions provided by the embodiments of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation manners.

[0045] In order to improve the power generation efficiency of the photovoltaic system, an embodiment of the present application provides a photovoltaic power generation control method, which is executed by a photovoltaic power generation control device. devices, such as PWM controllers. Terminal equipment such as mobile phones, personal computers, etc.

[0046] An example of an application scenario of the method is described below. Please refer to figure 1 , the application scenario includes a photovoltaic power generation control device 111 , a photovoltaic system 110 and a load 120 , and the photovoltaic system 110 includes a photovoltaic panel array 112 and a PWM controller 113 corresponding to each photovoltaic panel in the photov...

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Abstract

The invention provides a photovoltaic power generation control method, device and system, which are used for improving the power generation efficiency of a photovoltaic system. The method comprises the following steps: determining the current internal resistance of the photovoltaic system under the current output current; adjusting the current output current of the photovoltaic system according tothe current internal resistance and the resistance of the load until the internal resistance of the photovoltaic system is the same as the resistance of the load. The photovoltaic system is used forsupplying power to the load. According to the embodiment of the invention, the output current of the photovoltaic system is adjusted until the internal resistance of the photovoltaic system is the same as the resistance of the load, so that the output power of the photovoltaic system is kept at the maximum output power, and the power generation efficiency of the photovoltaic system is improved.

Description

technical field [0001] The present application relates to the field of electronic technology, and in particular to a photovoltaic power generation control method, device and system. Background technique [0002] A photovoltaic system includes multiple photovoltaic panels, inverters and loads. The hardware cost of the photovoltaic system is not high, but the power generation efficiency of the current photovoltaic system is generally low. In order to improve the power generation efficiency of the photovoltaic system, the general photovoltaic system will use the maximum power point tracking (Maximum Power Point Tracking, MPPT) technology, so that the output power of the photovoltaic system can maintain the maximum power. [0003] The current maximum power point tracking algorithm usually determines the maximum power point of the photovoltaic system, and then controls the current of each photovoltaic panel to maintain the current corresponding to the maximum power point. Howev...

Claims

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Application Information

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IPC IPC(8): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 刘松刘鹏陈浩杨顺
Owner HUADIAN ZHILIAN XINDA TECH BEIJING CO LTD
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