Tracking Autonomous Photovoltaic Installations for Sun under Action of Wind Load

Abstract

The paper presents the results of the development of the energy efficient photovoltaic solar tracking system considering the wind load. Authors propose the algorithm and the tracking model with stepper motors, which provide the energy efficiency as well as smooth and continuous operating of solar panel tracking under the random impacts including the wind load. The modes of operation of the Electromechanical actuator, allowing one to increase the survivability and reliability of the system under the action of wind load. The authors present the results of calculating a trajectory of movement depending on various influence of wind loading is resulted - helps to move, prevents to move, does not influence movement. The question of reducing the power consumption of stepper motors in the tracking mode and the absence of movement is considered. The proposed scheme with a non-linear setpoint speed enabling the crossing of transients in the control loop of the amplitude of the current. The study of the dynamic characteristics of the electromechanical tracking system with a stepper motor, shows the influence of the load on the characteristics of the tracking system in the presence of variable moment of inertia in the mechanical parts of the system.