Optimization of wind energy transfer using wind turbines

[摘要] ENGLISH ABSTRACT: The effect of topography and terrain on wind is examined in order to ensure that the wind turbinepositioning will encourage a greater availability of wind energy to it. Maximum power pointtracking methods are presented whereby the loading on the wind turbine is controlled to ensurethat the maximum available energy from the wind is captured. The wind turbine system ismodelled and used in simulations to evaluate the three proposed maximum power point trackers,named anemometer control, calculation control and constant step control for the purpose of thisthesis. An additional analog system is also created whereby the complete wind turbine system isable to be simulated. An inverter is used to replicate the generator and the loading is controlledusing an active rectifier since this will be used on the practical system. The results from thesimulations and analog system are presented whereby one of the trackers is shown to beinadequate and the other two trackers are shown to be close to ideal. The appeal of thecalculation method is in the redundancy of an anemometer making it attractive to less expensive,small-scale systems.

[发布机构] Stellenbosch University