Multi-mode wind-and-solar electricity generation system

Abstract

The invention discloses a multi-mode wind-and-solar electricity generation system, and belongs to the field of transformation of electrical energy. The multi-mode wind-and-solar electricity generation system comprises a solar electricity generation device, a wind energy electricity generation device, a first DC/DC converter, a second DC/DC converter, a bidirectional inverter, a bidirectional DC/DC converter, a storage battery, a switch, a direct current bus, a power grid, a direct current load, an alternating current load, a voltage and current sampling circuit and a DSP, wherein the bidirectional inverter can work in either the inversion state or the rectifying state, and the bidirectional DC/DC converter can work in either the voltage decreasing mode or the voltage increasing mode. The multi-mode wind-and-solar electricity generation system has the flexible control mode, the generated electricity can be fully utilized, the environmental and economic benefits are high, and the multi-mode wind-and-solar electricity generation system is particularly suitable for wind and solar electricity generation occasions and places where the step electricity price is implemented.

Description

technical field [0001] The invention belongs to the field of electric energy conversion, and in particular relates to a multi-mode wind-solar power generation system. Background technique [0002] With the excessive consumption of oil, coal and other resources, the energy crisis is gradually approaching. At the same time, the pollution caused by it is becoming more and more serious, which has a great impact on people's life and health. Therefore, the development of new and clean energy The general trend. In recent years, solar and wind power generation have been widely used and achieved certain benefits. However, traditional solar and wind power generation systems have the following problems: [0003] 1. The working mode is relatively single, the inverter used can only work in one state, and the power generated by solar energy and wind energy can only supply power to the load or the grid through the inverter; [0004] 2. The load capacity is poor. Since there is no energy...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcomings of the solar and wind power generation systems in the above-mentioned prior art, such as single mode, lack of energy storage links, and poor economic benefits, and provide a multi-mode wind power generation system. Choose the working mode of the system according to the size, make the system in the best working condition, make full use of the power generation energy, and improve economic benefits

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