... magnetic circuit design,cut-in wind speed of 3m/s,ensure lower wind speed can generate electric2,High aerodynamic efficiency ... increase output power taking into account regulating speed and strong wind protection6,Application field:communication base stations, navigation ... 20KW, 25KW, 30KW, 50KW, 60KW and etc. Above wind turbine ,using pitch,unloading, electronics yawing ,pneumatic yawing etc ...