Abstract
Wind turbine generators are eco-friendly generators that produce electric energy using wind energy. In this study, wind turbine generator efficiency is examined using a powertrain combination and annual power generation prediction, by employing an analysis model. Performance testing was conducted in order to analyze the efficiency of a hydraulic pump and a motor, which are key components, and so as to verify the analysis model. The annual wind speed occurrence frequency for the expected installation areas was used to predict the annual power generation of the wind turbine generators. It was found that the parallel combination of the induction motors exhibited a higher efficiency when the wind speed was low and the serial combination showed higher efficiency when wind speed was high. The results of predicting the annual power generation considering the regional characteristics showed that the power generation was the highest when the hydraulic motors were designed in parallel and the induction motors were designed in series.
Highlights
IntroductionAs carbon dioxide emission control has strengthened, owing to the concerns over limited resources and environmental pollution, an interest in eco-friendly energy production technologies, such as solar photovoltaic power generation and wind turbines, has been growing [1]
It has been reported that the major failures of wind turbine generators occur in the main components, and an interest in maintenance has been increasing since one to three failures occur in each wind turbine generator every year [2,3,4,5]
A simulation analysis model was developed in order to rapidly analyze the system characteristics of a wind turbine generator, using powertrain combination
Summary
As carbon dioxide emission control has strengthened, owing to the concerns over limited resources and environmental pollution, an interest in eco-friendly energy production technologies, such as solar photovoltaic power generation and wind turbines, has been growing [1]. The wind turbine generators that use aerodynamics have been extensively researched and developed, because they can be installed even in a rough terrain or the ocean. The main components of the existing wind turbine generators are gearboxes, generators, and frequency converters. It has been reported that the major failures of wind turbine generators occur in the main components, and an interest in maintenance has been increasing since one to three failures occur in each wind turbine generator every year [2,3,4,5]. The development of permanent magnet generators, using rare earth, has allowed for the development of small-sized
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