Design And Simulation Research Of The Key Components Of Rotary Vane Type Vertical Axis Wind Turbine

Nowadays, with the global energy consumption has been continuing to increase andoil, natural gas and coal reserves on Earth has been decreasing year by year, great reformof the world’s future energy structure is inevitable. Non-renewable energy will graduallywithdraw from the main energy classes and the21st century will be the age of renewableenergy. Wind, as a kind of renewable energies, has the characteristics of abundant storage,wide distribution, few pollution and no harm to the ecology. Investment and developmentin wind power industry are encouraged by the policies of governments of all countries inthe world. Wind turbine is the main equipment of converting the wind into electricalenergy, and can be split into two basic types, the horizontal axis wind turbine and verticalaxis wind turbine. The traditional vertical axis wind power generator has not been widelyused for the reasons of poor capability of starting by itself and taking use of wind energy.Therefore, how to resolve the disadvantages of vertical axis wind turbine becomes animportant project in the field of wind turbine design.This paper adopted the H type straight bladed vertical axis wind power generator asthe object to study, aiming at the problem of poor capability of starting by itself and fullytaking use of wind energy, formulated a new optimal pattern for changing rules of theblade pitch angle in combination of the changes of attack angle and the characteristics ofblade aerodynamic force. According to the blade element theory, the results of calculationshow that the pattern can effectively increase the starting torque of vertical axis windturbine and improve the utilization of wind. As a way to optimize the design parameters ofvertical axis wind turbine, a two-dimensional variable numerical simulation of the verticalaxis wind turbine was made by using the CFD sliding mesh technology and the windturbine torque coefficient and power in different running conditions were calculated out.Then the wind turbine design parameters were optimized in combination with theoptimization method of orthogonal test, and in the last a general technical scheme ofrotary vane type vertical axis wind turbine was created with the design technology ofhorizontal axis variable pitch wind generator as the foundation. A mechanical system ofcontrolling and transmission was designed between the blades and yaw control motor. Thesystem can continuous control of the blade windward angle according to the real-timemonitoring of the wind turbine output torque to realize maximum utilization of wind andkeeping constant output torque. In accordance with the structural characteristics of rotary vane type vertical axis wind turbine, the load conditions was calculated out, strength andrigidity check for the main shaft of the wind machine and the pylon was carried out, thestructure of the spindle diameter was optimized as well as the modal analysis of the pylonwas made by using Solidworks.Design and simulation research of the key components of rotary vane type verticalaxis wind turbine take aim at improving the wind energy utilization of vertical axis windturbine. The new theory innovation and practice application are realized on variable pitchtechnology, performance prediction, and structural analysis, combining with wind turbineaerodynamics, CFD fluid simulation, Solidworks software analysis. The research has thevalue of theory guide and practice application to the research and development of newtype vertical axis wind turbine.