再生エネルギー研究センターパンフレット（英語）

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7Wind Power Team－Advanced Technology for Wind Power Generation－The further reduction of power generation costs is indispensable to accelerate the introduction of wind power generation and to achieve grid parity although the practical application of the wind power generation has progressed. Both the hardware aspect of wind turbines and the software aspect such as assessment technologies for the suitable site selection based on the high-quality wind assessment and the wind forecasting are needed to achieve the further cost reduction.Research Target　The team aims to establish elemental technologies for high performance wind turbines and their assessment techniques toward the further reduction of power generation costs and to contribute to the robust promotion of the domestic introduction and the improvement of the international competitiveness of wind power industry in Japan by placing such advanced technologies into practical use together with the domestic wind power industries.①The team set a goal of improving amount of power output by +5% or more and the lifetime of wind turbines by +5%-10% or more by developing and demonstrating elemental technologies for sophisticating performance of single wind turbine and the entire windfarms.②The team set a goal of errors of ±5% or less as well as the reduction of measurement and assessment costs by 20%-30% by achieving the advancement of assessment technologies for wind power generation.Research Outline①Elemental technologies for a high-performance wind turbine　The team will develop and demonstrate a high-performance prototype of nacelle mounted LIDAR as a new promising technology for measuring the wind speed and direction in the upstream side of a wind turbine. This technology can improve the wind turbine’s power output by performing the feed-forward control (yaw control and pitch control) of the wind turbine based on the information on wind speed in the upstream side of a wind turbine obtained through a nacelle mounted LIDAR. In addition, it can improve the reliability and the lifetime of a wind turbine by reducing the load on wind turbine blades. Basic studies and empirical research on them has been conducted at demonstration field.②Offshore wind resource assessments using a numerical model andsatellite remote sensing　It is indicated that the wind measurements with a meteorological mast at the offshore site is very difficult economically, except for national research and demonstration projects. As a new alternative technology to high-cost in-situ measurements at the offshore site, the team is developing a technology for evaluation and prediction of offshore wind with the use of satellite remote sensing and a numerical meteorological model. Cost reduction (to several hundred million yen (1/5-1/10) or less) is expected by this alternative technology using a numerical meteorological model and satellite remote sensing.An example of measured result by a nacelle mounted LIDAR installed on a research wind turbine (distribution of wind speed in line of sight directions)※LIDAR: Light Detection and Ranging (a device for the remotely measuring wind speed and wind direction by laser light)Nacelle mounted LIDARNacelle10-minute average wind speed in line of sight directions (at 17:00-17:10 on February 1, 2015)Numerical meteorological modelSatellite remote sensing