| In order to improve the efficiency of generate electricity of parabolic troughsolar thermal power generation device, a solar tracker is needed to track the solarmotion. In fact, the parabolic trough solar thermal power generation device has toresist the impact of certain environments, such as wind, rain, snow, dust etc, whichrequires the condenser itself should have enough strength; on the other hand, thecondenser constantly rotates to pointing to the sun. Therefore, when design of drivesystem for a solar energy generation product, we not only need to guarantee thestrength of every mechanical part, but also have to reduce response time, speed upthe response of the whole system, to ensure the solar energy generation absorbssolar rays as much as possible to be utilized for producing electric power.The theories of hydraulic servo system are applied in tracking drive systemdesign. Several system schemes are analyzed and the design and calculation of everypart of system is also performed as well as the simulative analyses. Later, we furthermodel the direct-drive hydraulic system and simulate it, optimizing the systemparameters, decreasing the error, to meet the design target.The finite element models of key components are established using ANSYSsoftware, and the structure static analysis is carried out, obtaining the distribution ofstress-strain and working information of the key parts, to offer reasons for improveits mechanical behavior. The strength of rotating shafts, splines, bearing pins of thedrive system are also checked to meet the design requirements.The controller scheme of mechanical tracker system for parabolic trough solarthermal power generation device is proposed. A practical control system is designedand implemented to meet the system performance index. A robust control software isdeveloped to applied to various weather condition.In this paper,better use of solar thermal power generation point of view,inSichuan Province Science and Technology Department Technology SupportProgram Project (project number:2011GZ0216) support,designed for automaticdaily tracking drive system,and through theoretical calculation,simulation analysisshows that the design of the tracking system can meet the technical requirements,and make the tracking drive system design, control system design. |