At present, Darrieus is a resistanc

At present, Darrieus is a resistance type wind turbine. By increasing the number of impellers and improving the design, the windward area is significantly larger than the windward area, so as to reduce the windward resistance. Its magnetic levitation coupling and small loss of windward area greatly improve its wind energy conversion efficiency, and it is not afraid of crosswind and complete silence. At the same time, it uses its magnetic levitation movable shaft with programmable multi coil resistance The converter design solves the previous technical problem of limiting the vertical axis wind turbine, and designs a unique three-phase permanent magnet generator to generate more power at lower wind speed; windside company of Finland introduces a small vertical axis wind turbine system with unique shape, which can be charged in the field, and has strong environmental adaptability, the biggest feature is that the wind speed is not enough The VAWT small system developed by the French Gual industrie company adds a circle of guide impeller around the vertical axis wind wheel to form an inflow channel with acceleration function, which increases the speed and rotation torque on the rotor impeller. The VAWT system with wide range of use and high power generation has been launched by the Canadian cleanfield energy company, which can be regarded as the roof VAWT system in appearance The H-shaped deformation of dalie wind turbine, the whole system is composed of fiberglass and steel. Excellent aerodynamic design and special torque design make it have the characteristics of low starting wind speed, good resistance to strong wind, compact appearance, and less parts than the same power horizontal axis wind turbine, which not only saves maintenance costs, but also extends service life. In general, the research and application of vertical axis wind turbine in foreign countries has reached a very high level.