Dynamic Analysis Of Photovoltaic Modules And Supporting Structure

With the concept of green building and low-carbon energy saving are taken into the consideration, the development of roof integrated photovoltaic has gradually become a trend. Static study of the supporting structure for the photovoltaic roof is a main method now days, its dynamical research is relatively less. By dynamic analysis method, this paper studies the influence of wind and seism action on the dynamic response of photovoltaic modules and supporting structure. The objectives of this paper are as follows:1. The research situation of all kinds of roof with wind-induced and seismic vibration are systematically studied. Design method of roof structure and methods of dynamic response analysis are concluded.2. In view of the PV roof project in Hangzhou, the finite element models of photovoltaic modules and supporting structure are established by using ANASYS program, with engineering parameters. Through the modal analysis, the two kinds of structure forms of natural vibration are researched.3. Based on the linear filtering method, the wind speed and pressure are calculated. And buffeting response of the model in time domain is conducted. By transient dynamic analysis, when parameters change (such as basic wind speed, height of roof, section size, geomorphology categories, etc.), this paper has researched the macroscopic response disciplinarian of the structure model (such as root-mean-square, displacement response, wind fluttering factor, etc.).4. Considering lower part of the photovoltaic modules may has cooling system, such as condenser, radiator, etc. structural quality will increase. This paper has been carried out seismic response time analysis of photovoltaic modules and supporting structure, by using Taft wave and Elcentro wave. At last, by comparing the results of wind vibration response and seismic response, the controlling effect of them has been discussed.