진동수주형 파력발전장치의 디지털 트윈 기술적용을 위한 실시간 가상 물리모델 개발에 관한 연구

Abstract

This study was carried out to develop a real-time virtual physical model for the application of digital twin technology of OWC wave power generator. The OWC wave power generator is composed of a oscillating chamber, a turbine, and a power generation device, and the devices are operated in conjunction. The wave energy generated by the waves raises and lowers the water height of the oscillating chamber. So the air in the oscillating chamber is compressed or expanded . In order to realize the behavior of OWC wave power plant in an analytical way, interlocking analysis of air and water is required, so phase boundary flow must be applied. There is a difficulty in simultaneously analyzing the generator model. Therefore, it is difficult to integrate the analysis program because the multidisciplinary system must be applied at the same time, and it is necessary to develop a virtual physical model to control the digital twin technology in real time. A virtual physical model was built using the energy conservation equation for the control volume including the vibration order chamber and the turbine area, and a meta-model that can predict the electrical torque of the generator model using the mechanical rotation speed of the turbine was created and applied. Comparing the analysis results with the operational data and results, it was confirmed that the trends were well matched.