Wind-solar hybrid power generation system

Abstract

The invention discloses a wind-solar hybrid power generation system. The wind-solar hybrid power generation system has the advantages that alternating currents are generated by a wind-driven power generator, and fixed voltages can be effectively outputted by a rectifier and a DC/DC power converter; solar energy is converted into direct currents by a photovoltaic array under a photovoltaic effect, and fixed voltages can be effectively outputted by a second DC/DC power converter; the direct currents generated by the DC/DC power converters are supplied to a direct-current load, or can be converted into alternating currents by an inverter, and the alternating currents can be supplied to an alternating-current load; surplus electric energy can be stored by a storage battery if the surplus electric energy is available after electric energy which is outputted by the wind-driven power generator and the photovoltaic array is supplied to the direct-current load and the alternating-current load; power can be supplied to the direct-current load and the alternating-current load by the storage battery when requirements of the direct-current load and the alternating-current load cannot be met by insufficient electric energy which is outputted by the wind-driven power generator and the photovoltaic array; the wind-solar hybrid power generation system can generate stable main output power by the aid of solar energy and wind energy hybrid characteristics, and accordingly the stability and the reliability of the wind-solar hybrid power generation system can be improved.

Description

technical field [0001] The invention relates to the technical field of renewable energy, in particular to a wind-solar hybrid power generation system. Background technique [0002] Among the currently available renewable energy sources, wind energy and solar energy are widely used due to their advantages of being widely distributed, inexhaustible, inexhaustible, locally sourced, and non-polluting. However, due to the disadvantages of low energy density and poor energy stability, the utilization of the two is also restricted to a certain extent. Both solar energy and wind energy are relatively unstable and discontinuous energy sources. When used in areas without grids, a large number of energy storage devices are required, which greatly increases the cost of the system. Contents of the invention [0003] The technical problem solved by the invention: the energy provided by wind energy and solar energy has the disadvantages of randomness and intermittent nature. [0004] T...

AI Technical Summary

Problems solved by technology

However, due to its low energy density, poor energy stability and other shortcomings, the utilization of the two is also subject to certain restrictions.

Both solar energy and wind energy are relatively unstable and discontinuous energy sources. When used in areas without grids, a large number of energy storage devices are required, which greatly increases the cost of the system.

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