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Hybrid energy storage off-network photovoltaic power generation system

A photovoltaic power generation system and hybrid energy storage technology, applied in photovoltaic power generation, photovoltaic power stations, photovoltaic modules, etc., can solve problems such as aggravating environmental pollution and achieve cost-saving effects

Inactive Publication Date: 2015-07-08
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

And the use of disposable energy also aggravates the pollution of the environment

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  • Hybrid energy storage off-network photovoltaic power generation system

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[0009] specific implementation plan

[0010] In order to make the purpose, technical solution and advantages of the photovoltaic system clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the off-grid photovoltaic system, and are not intended to limit the off-grid photovoltaic power generation system.

[0011] The photovoltaic array is controlled by the MPPT algorithm to find the maximum light power point, and the electric energy generated by the array passes through the BUCK DC / DC circuit to stabilize the voltage, a part of the electric energy is transmitted to the supercapacitor to charge it, and the other part of the electric energy is transmitted to the electrolysis device , hydrogen and oxygen are electrolyzed as raw materials for fuel cells. When the load needs to use electric energy, when elect...

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Abstract

The invention relates to the field of off-network independent photovoltaic power generation systems, in particular to a hybrid energy storage off-network photovoltaic power generation system. The hybrid energy storage off-network photovoltaic power generation system comprises a photovoltaic array, a BUCK type DC / DC convertor, a BOOST type DC / DC convertor, a super capacitor, an electrolysis device, a fuel cell, an MPPT trace controller, an inverter and a load. The controller traces the maximum power point of the array, and charging and discharging of an energy storage device are controlled. Accordingly, the use ratio of the photovoltaic array is high, the farad capacitor is fully utilized, the charging rate is high, the cycle life is long, the problem that the energy storage service life of an existing off-network photovoltaic power generation system is not long is solved, storage batteries are replaced by the fuel cell, the cycle life is long, the environment is protected, and the heavy metal pollution brought by the storage batteries is reduced.

Description

technical field [0001] The invention belongs to the technical field of new energy, and relates to a hybrid energy storage off-grid photovoltaic power generation system. Background technique [0002] Energy is the main material basis for human survival and development, the blood of the world economy, and an important factor affecting national security. With the development of social economy and the improvement of human living standards, the demand for energy is increasing worldwide, but these limited energy reserves are becoming increasingly exhausted. And the use of disposable energy has also aggravated the pollution of the environment. As a huge energy resource, solar energy has great potential for utilization, and has obvious advantages compared with conventional energy sources: extensive existence; "infinity" of energy storage; cleanness of utilization; economical utilization. [0003] Supercapacitor, also known as electrochemical capacitor, has good pulse charging perf...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S10/20
CPCH02S10/00Y02E10/50Y02E70/30
Inventor 薛玉明杭伟高林李鹏宇孙海涛张奥周玥昕赵子震陈国贤夏宇冯少君彭越浩李冠颖路孟玮
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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