Design And Implementation Of High-precision Solor Tracking Controller Based On DSP

Solar energy as an environmentally friendly, green renewable energy, currentlythe world are actively the development and utilization of solar energy to undertakeextensive research .In China, the new solar-based energy development and utilizationhas become an important part of national sustainable development strategies .Through theoretical analysis,we can get that automatic tracking solar power and solarpower installations designated as compared to solar energy utilization can beincreased by 35%, solar energy utilization but now only 10% to 20% .In view of thispaper, designed High-precision solar tracking controller based on DSP .In the analysis of domestic solar tracking control system based on the basicprinciples, the paper design of a new DSP-based high-precision solar trackingcontroller, which has two degrees of freedom can be achieved on the solar elevationangle and azimuth tracking . The tracking controller is used as the control DSP chip,SPS0606 as a photocell sensor, by the stepper motor controls the executing agency assolar panels to track the location of the sun, the solar tracking device is alwaysopposite the position of the sun. The tracking controller can improve the precision oftracking the sun, but also has strong anti-interference and robustness.The main work of this paper is as follows:(1)Solar tracking controller design the mechanical structure, the structure has twodegrees of freedom, namely, horizontal and vertical direction of rotational degrees offreedom rotational degrees of freedom. The mechanical structure of the movementdriven by two stepper motors to complete the solar elevation angle, and orientationtracking.(2)Solar tracking control system design of hardware systems. Hardware systemconsists of two aspects: detection circuitry, the control circuitry. Detection circuitsystem accomplished the four-quadrant photocell sensor signal filtering, amplification,comparison, the collection of solar signal is passed to the control circuit. Controlcircuit is part of the completion of the entire system of control, its calculatedaccording to DSP control signals control the stepper motor on the solar elevationangle and azimuth control.(3)Design of system software algorithms. System mainly include solar tracking algorithm equations of motion control controller implementation and DSP-baseddigital filter implementation. Solar tracking controller in accordance with theequations of motion to calculate the operating rules of the sun the sun's trajectory, thatis, as the day the sun trajectory. DSP-based digital filter design is based on thecharacteristics of DSP chips, combined with MALTAB simulation software to designthe software filter for the sampled signals(4)Complete solar tracking control system software design. To CCS3.3 designplatform, according to software modules to design the appropriate software. Themain functional modules: the main program module, tracking the sun anglecalculation module, the signal acquisition module, stepper motor control module andother modules related to the design.After the actual testing and inspection, the paper design of high-precision solartracking controller system is simple, stable, high tracking accuracy and stronganti-interference characteristics.