Design And Research Of The Dish Solar Thermal Power Generation Device Tracking Control System

Solar thermal power generation device tracking control system is an importantpart of the solar generator sets,which good tracking control performance is one of thekeys to ensure the efficiency of solar energy power generation. In this paper, thewhole tracking control system is designed by studying the25KW dish solar trackingcontrol system.The main research contents and achievements can be summarized as follow:Fristly, the dynamic characteristics of two directions of azimuth and elevationangle are analysied by studying the overall structure of the25kw dish solar powergeneration devices in this paper.Elecromechanical coupling dynamics model,including electromagnetic torque equation, electromechanical motion equation anddrive shaft equation, are built in order to analysis the dynamic model and control ofsolar tracking system and three closed-loop control model is estabished via threeclose-loop control with current, speed and position feedback are employed accordingto three-phase asynchronous motor with rotor field oriented to simulation analysis onthe response characteristics of the whole system. Based on the above anlysis,numerical simulation model was bulit under the simulink the environment and detailanlysis the system of response and control characteristics. Then,sysetm relativecontrol circuits with hardware circuit including a power supply module, signaldetection module, display module,the alarm module and tracking control module,were designed by using the programmable logic controller with its model FX3U-48MT-ES-A as the core of basic control on comparative study the domestic andinternational solar tracking device. Combined with the hardware circuit, the controlprogram is compiled to experimental verify the proposed method. The accurateness oftime display module, feasibility of automatic tracking and manual tracking andoverload alarm are verified meeting the requiretment of tracing control and automat-ic tracing. Lab debug coincide with the field debugging results demonstrate theeffectiveness and feasibility of the proposed method.