Hybrid energy storage system, renewable energy system including the storage system, and method of using same

Abstract

This disclosure generally relates to stabilizing energy provided by an energy source, and more particularly to systems and methods for using multiple types of energy storage devices to selectively capture and provide energy. An energy source provides energy, and the energy storage devices selectively capture energy provided by the energy source in excess of an immediate energy requirement of a load and selectively provide energy when the immediate energy requirement of the load exceeds the energy provided by the energy source.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from U.S. Provisional Patent Application No. 61 / 165,851 (filed Apr. 1, 2009), the entire content of which is incorporated herein by reference.FIELD[0002]This disclosure generally relates to systems and methods for stabilizing energy provided by an energy source, and more particularly to systems and methods for using multiple types of energy storage devices to selectively capture and provide energy supplied by energy sources, including renewable and nonrenewable energy sources.BACKGROUND OF THE INVENTION[0003]As the world's population increases, consumer demand for electrical energy also increases. Fossil fuels (e.g., coal, oil, and natural gas) have been used as an energy source in electrical power plants for many years. Burning fossil fuels generates air pollutants such as carbon dioxide. These emissions may have a negative effect on the environment and may contribute to climate change. Further, to reduce...

AI Technical Summary

Benefits of technology

[0011]The disclosure is also directed to another method of stabilizing power provided by an energy source to a load. A first energy storage device captures energy produced by the energy source in excess of an immediate energy requirement of the load unless the energy produced in excess of the immediate energy requirement of the load exceeds an intake rate threshold of the first energy storage device. A second energy storage device captures energy produced by the energy source in excess of the immediate energy requirement of the load if the energy produced in excess of the immediate energy requirement of the load exceeds an energy intake rate threshold of the first energy storage device. In one embodiment, the first energy storage device pr...

Problems solved by technology

These emissions may have a negative effect on the environment and may contribute to climate change.

Further, to reduce air pollutants, some countries have passed laws that limit allowable air pollutants.

These laws generally increase the cost of generating electrical energy from fossil fuels.

Fossil fuel deposits around the world are being depleted because they are not being replenished at a rate commensurate with consumption.

These factors combine to cause increasing and unstable prices for energy generated from fossil fuels.

One drawback associated with renewable energy sources is that their energy production may be affected by factors beyond the control of any operator such as darkness, lack of wind, or weather.

Therefore, solar cells and wind turbines cannot produce a steady energy output all day every day.

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