The wind-solar hybrid power generation system is mainly composed of wind turbines, solar panels, wind solar hybrid controllers, batteries, DC to AC power inverters, AC and DC loads, etc. The system structure diagram is shown below.
The system is a composite renewable energy power generation system that integrates multiple energy power generation technologies such as wind energy, solar energy and storage batteries, and system intelligent control technology.
(1) The part of wind power generation uses wind turbines to convert wind energy into mechanical energy, and the mechanical energy is converted into electrical energy through the wind generator, and then the battery is charged through the controller, and the load is supplied through the inverter;
(2) The photovoltaic power generation part uses the photovoltaic effect of solar panels to convert light energy into electrical energy, then charges the battery, and converts direct current to alternating current through an inverter to supply power to the load;
(3) The inverter system consists of several inverters, which convert the direct current in the battery into a standard 220v alternating current to ensure the normal use of the alternating current load equipment. At the same time, it also has an automatic voltage stabilization function, which can improve the power supply quality of the wind and solar hybrid power generation system;
(4) The control part constantly switches and adjusts the working state of the battery pack according to the intensity of sunlight, the magnitude of the wind, and the change of the load: on the one hand, the adjusted electric energy is directly sent to the DC or AC load. On the other hand, the surplus electric energy is sent to the storage battery pack. When the power generation cannot meet the needs of the load, the controller sends the battery power to the load to ensure the continuity and stability of the entire system;
(5) The accumulator part is composed of multiple accumulators, which play two major roles of energy regulation and load balancing in the system. It converts the electrical energy output by the wind power generation system and the photovoltaic power generation system into chemical energy and stores it for use when the power supply is insufficient.
