Engineering & Technology

Engineering & Technology

An Improved Dual Axis Controller for Photovoltaic Cells

Pages: 10  ,  Volume: 3  ,  Issue: 1 , April   2018
Received: 06 May 2018  ,  Published: 06 May 2018
Views: 84  ,  Download: 49


# Author Name
1 Ukoima Kelvin Nkalo


In this paper, we propose a simple and novel approach to the design of a dual axis controller for photovoltaic (PV) cells. The objective is to reduce the electronic circuitry associated with previous and existing designs while at the same time ensuring a robust principle of operation. Two pairs of Light Dependent Resistors (LDR), an ATMEGA 328P microcontroller and a servomotor form the principal components of the circuit model. The model works by performing averages of the signals generated from four (4) LDR’s placed at the four corners of a photovoltaic cell. Based on the computed averages, the microcontroller relays instructions to servo motors for rotation of the PV cells towards the direction of maximum incident sun rays. All simulations were performed using the PROTEUS software. Results obtained show a 54.71% increase in the generated output power for the tracking system as opposed to the fixed solar panel. The design was successfully constructed and implemented.


  • Photovoltaic
  • Proteus
  • Light dependent resistors
  • Controller
  • References

    [1]  Wang, J. and Lu, C. (2013). Design and Implementation of a Sun Tracker with a Dual – Axis Single Motor for an Optical Sensor – Based Photovoltaic System Sensors, vol. 13, no. 1, pp. 3157 – 3168. 

    [2] Nayak,S. and Pradhan, C. (2012). Solar tracking application. IOSR J. Eng. vol. 2, pp. 1278–1281.

    [3] Abdallah, S. and Nijmeh, S. (2004). Two axes sun tracking system with PLC control. Energ. Conv. Manag. vol. 45, pp. 1931–1939.

    [4] Saravanan, C.; Panneerselvam, M. and Christopher, I. (2011). A novel low cost automatic solar tracking system. Int. J. Comput. Appl. vol. 31, pp. 62–67.

    [5] Arbab, H.; Jazi, B. and Rezagholizadeh, M. (2009). A computer tracking system of solar dish with two-axis degree freedoms based on picture processing of bar shadow. Renewable Energy. vol.34, pp. 1114–1118.

    [6] Dasgupta, S.; Suwandi, F.W.; Sahoo, S.K. and Panda, S.K. (2010). Dual Axis Sun Tracking with PV Cell as the Sensor, Utilizing Hybrid Electrical Characteristics of the Cell to Determine Insolation. In Proceedings of 2010 IEEE International Conference on Sustainable Energy Technologies, Kandy, Sri Lanka, vol. 6, no. 9, pp. 1–5.

    [7] Yan, Z. and  Jiaxing, Z. (2010). Application of Fuzzy Logic Control Approach in a Microcontroller-Based Sun Tracking System. In Proceedings of 2010 WASE International Conference on Information Engineering, Beidaihe, China, vol. 14, no. 15, pp. 161–164.

    [8] Ozuna, G.; Anaya, C.; Figueroa, D.and Pitalua, N. (2011).  Solar Tracker of Two Degrees of Freedom for Photovoltaic Solar Cell Using Fuzzy Logic. In Proceedings of the World Congress on Engineering 2011, London, UK, vol. 6, no.8, pp. 1410–1413.

    [9] Li, G.; Shi, X., Fu, C.and  Zhou, G. (2008). Design and Implementation of a Novel MPPT Controller Based on Sun Tracking Technology. In Proceedings of the 11th International Conference on Electrical Machines and Systems, Wuhan, China, vol. 17, no. 20, pp. 2611–2615.

    [10] Hanieh, A. (2010). Solar Photovoltaic Panels Tracking System. In Proceedings of the 6th WSEAS International Conference on Dynamical Systems and Control, Sousse, Tunisia. vol. 3, no. 6, pp. 30–37.