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A photovoltaic confluence device

A confluence device, photovoltaic technology, applied in photovoltaic modules, photovoltaic power generation, instruments, etc., can solve the problems of inability to output inverter, constant output voltage, etc.

Active Publication Date: 2017-05-03
BEIJING BOE ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of outputting voltage of the whole battery string, it is impossible to output a constant output voltage to the inverter

Method used

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  • A photovoltaic confluence device
  • A photovoltaic confluence device
  • A photovoltaic confluence device

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Experimental program
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Embodiment Construction

[0035] An embodiment of the present invention provides a photovoltaic confluence device, which can at least adjust the input voltage corresponding to the maximum output power from each solar battery string, adjust the output voltage to the rated voltage of the inverter and output it to Inverter, the rated voltage of the inverter is a constant voltage.

[0036] The photovoltaic confluence device also tracks the maximum output power of each battery string to ensure that each battery string outputs according to the maximum power and improves the utilization rate of light energy.

[0037] In the photovoltaic confluence device provided by the present invention, a control circuit is provided between each solar battery string and the positive and negative confluence buses;

[0038] The technical solutions provided by the embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

[0039] see figure 1 , is one of the schema...

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Abstract

The invention discloses a photovoltaic collector-shoe gear. It is ensured that a battery pack string outputs the maximum power, and the input voltage from each battery pack string is adjusted, so that the photovoltaic collector-shoe gear outputs a constant voltage. The photovoltaic collector-shoe gear comprises a positive and negative busbar and control circuits, wherein the positive and negative busbar is used for outputting direct currents provided by the solar battery pack strings to an inverter in a parallel mode, each control circuit is arranged between the corresponding solar battery pack string and the positive and negative busbar, and the control circuits are used for adjusting output voltage values corresponding to maximum power values output by the solar battery pack strings, carrying out adjustment on the output voltage values to enable the output voltage values to be equal to the rated voltage value of the inverter, and outputting the adjusted output voltage values to the inverter through the positive and negative busbar in the mode that the adjusted output voltage values serve as output voltage values of the control circuits.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a photovoltaic confluence device. Background technique [0002] With the large-scale application of photovoltaic renewable energy power generation technology, the efficiency of photovoltaic power generation system has attracted much attention. In recent years, photovoltaic grid-connected power generation has risen on a large scale. [0003] In the solar photovoltaic power generation system, the solar photovoltaic power generation system relies on the inverter to achieve the maximum power output of the battery string. In order to reduce the connection between solar photovoltaic battery strings and inverters, simplify the system structure, and improve the reliability and maintainability of the power generation system, a photovoltaic confluence device is installed between photovoltaic battery strings and inverters to A certain number of battery strings are concatenated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S40/36G05F1/67
CPCY02E10/56
Inventor 郑平宋行宾韩晓艳
Owner BEIJING BOE ENERGY TECH