A wind turbine unit that connects two or more wind turbines in series to form a workshop to improve the efficiency of using wind energy. When the wind wheel is affected by the wind, it starts to rotate. The transmission device drives the rotation of the rotating shaft. The rotating shaft is connected to the generator. The generator converts mechanical energy into electrical energy. in series to form a workshop to improve the utilization efficiency of wind energy. Double rotor wind turbine is a new type of wind power generation machinery. This is a technologically advanced patented product independently developed in China.
Some conditions are required for the wind turbine to be connected to the grid, mainly when the wind speed reaches the wind start speed, the unit starts to enter standby state. At this time, the unit begins to wait for the turbine speed to reache the starting state, then the blades of the unit start to move towards the optimal tilt angle. Once the turbine speed reaches the grid connection speed, the unit begins to connect to the grid. Before connecting to the network, the unit must quickly pass through the resonance zone of the tower.