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Photovoltaic grid-connected generating system with intelligent power distribution function

A technology of distribution function and grid-connected power generation, which is applied in photovoltaic power generation, AC network circuits, collectors, etc., can solve the problems of low utilization efficiency and incapable of intelligent motor adjustment, so as to reduce the failure rate and avoid overcharging and undercharging , The effect of reducing the number of charge and discharge

Inactive Publication Date: 2016-10-12
JIESHOU JINGHUA TECH INFORMATION CONSULTING SERVICE CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the current series working interface is only put into use when the AC main grid fails, and the utilization efficiency is low, and the mode of parallel or series connection between photovoltaic power generation and AC grid is fixed, and it cannot be intelligently adjusted according to the load capacity

Method used

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  • Photovoltaic grid-connected generating system with intelligent power distribution function
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  • Photovoltaic grid-connected generating system with intelligent power distribution function

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Embodiment Construction

[0026] see figure 1 , which shows a schematic block diagram of a photovoltaic grid-connected power generation system.

[0027] A photovoltaic grid-connected power generation system with intelligent power distribution function of the present invention mainly includes a photovoltaic array, a bridge rectifier, a charging controller, a voltage stabilizing module, a storage battery, a bidirectional converter, a selection switch module, and an AC power grid. The photovoltaic array is connected to the charge controller through a bridge rectifier. Among them, the photovoltaic array can be composed of distributed photovoltaic units, and the bridge rectifier can be composed of uncontrollable full-bridge power diodes. The storage battery can be a battery pack composed of 12V single lead-acid batteries, or a supercapacitor.

[0028] Such as figure 1 As shown, the charge controller is connected to the battery. The charge controller and the storage battery are respectively connected to ...

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PUM

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Abstract

The invention provides a photovoltaic grid-connected generating system with an intelligent power distribution function. The system mainly comprises a photovoltaic array, a bridge type rectifier, a charging controller, a voltage stabilizing module, a storage battery, a bidirectional current transformer, a selector switch module and an AC power network. According to the invention, intelligent charging control of the storage battery is realized through an auxiliary charging module; control of a serial and parallel mode of a photovoltaic system and the AC power network is realized through the selector switch module; the service life of the storage battery can be effectively prolonged, the electric energy utilization efficiency of the photovoltaic grid-connected generating system is improved, and at the same time, the fault rate of the photovoltaic grid-connected generating system can be reduced.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic grid-connected power generation system with an intelligent power distribution function. Background technique [0002] A photovoltaic cell is a device that responds to light and converts light energy into electricity through the photoelectric effect. Photovoltaic power generation, as one of the most promising power generation technologies among all renewable energy sources, has been widely developed in recent years. [0003] Photovoltaic grid-connected power generation / power supply is currently the most widely used and most mature photovoltaic power generation application. The most basic components of photovoltaic grid-connected power generation mainly include photovoltaic arrays, semiconductor rectifiers, batteries, and grid-connected equipment or devices. Among them, large-capacity batteries are a necessary means to adjust the power distrib...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J7/35H02J3/46H02J7/00H02J7/02
CPCH02J3/383H02J3/46H02J7/0036H02J7/02H02J7/35Y02E10/56
Inventor 尚圣杰
Owner JIESHOU JINGHUA TECH INFORMATION CONSULTING SERVICE CO LTD
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