Study on seismic and wind response control technology for aerogenerator

Abstract

Fukushima nuclear power plant accident occurred from the cause of all the loss of power in the nuclear power plant. Aerogenerator are expected as emergency external power supply of nuclear power plant. However, response control technology of aerogenerator has been still developing stage. In case of application using conventional response control technology to aerogenerator, Tuned Mass Damper may be suitable device now, because of fully effective in harmonious vibration. However, the device can't be expected in impact transient force input such as seismic forces. Therefore, applying a damping element to aerogenerator will be one of solution to reduce responses caused by earthquake or strong wind input. This study has been examined to develop a new suitable response reduction system for aerogenerator using response control device. In this time, the wire type elasto-plastic coil damper is proposed for a vibration control element. In the first step, the evaluation of vibration control effect is conducted from time response analysis using analytical model of TMD and wire type elasto-plastic coil spring damper: CSD based on the restoring force characteristics obtained from loading test used for the test specimens of CSD. In the next step, actual vibration control effect is confirmed from shaking table test.