Case Study of Wind-Solar hybrid Power Generation System

Wind-solar hybrid, is a set of power generation application system, the system uses the solar cell array, wind generator (converts alternating current into direct current) to store the electric energy emitted to the battery, when the user needs electricity, the inverter will be stored in the battery into alternating current, through the transmission line to the user's load; The surplus energy is sent to the external grid.

 

As wind generator and solar cell array are two power generation equipment, it can make up for the defects of wind power and photovoltaic independent system in terms of resources: 

(1) hybrid day and night - solar power at noon and wind power at night; 

(2) hybrid seasons strong sunshine in summer, strong wind energy in winter; 

(3) High stability 1 Use the natural complementarity of scenery, greatly improve the stability of power supply system. 

Small Wind-Solar hybrid Power Generation System 

Small wind-PV hybrid power generation system is generally composed of one or several small and medium-sized wind generators and a number of solar cell components of the power source, the power into the wind-PV hybrid controller, in the controller first converted into direct current, according to the control needs of the DC battery can be charged and inverter into alternating current.

 

The small wind-solar hybrid power generation system can be an independent power supply system off the grid, and the AC generated can be used by the users themselves, or it can be formed into a grid-connected system, and the excess AC can be sent to the grid.

 

General wind generator output for AC output, 1KW below the micro wind generator has low-voltage single-phase AC output or three-phase AC output; The small wind turbine with more than 1KW is a three-phase AC output. Small wind turbines more own rectifier, many small wind turbines can be equipped with a variety of controllers. 

Wind-solar Hybrid Led Street Lighting System 

Micro wind-solar hybrid system has been widely used in the field of public lighting. Each street lamp completely uses wind and sunlight to power lamps (without external grid connection), with the dual advantages of wind and solar energy products. It is generated by wind and light energy cooperatively, and the electric energy is stored in the battery, with intelligent switch control and automatic induction of external light changes without manual operation. It is especially suitable for highway, urban road, levee, landscape road and rural road.

 

The micro wind generator and photovoltaic cell modules are connected together through their own conversion circuit output the same DC voltage, and through the anti-reflux diode to charge the battery. LED current control circuit can output stable current, and can control the size of the current, but also the switch of LHD lamp, when it is dark to start the system LED current control output current to LED lamp, after dawn off. There is a unloading circuit in the circuit, after the battery is fully charged, there is a surplus of electricity, in order to protect the wind turbine and photovoltaic modules, open the unloading circuit to discharge the surplus power.