Using P&O based sensorless method in single- axis solar tracker

Soroush Ghabusnejad, Ashkan Majdi, S. Alireza Davari

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


This paper presents a power and light sensor-less P&O (perturbation and observation) based single-axis tracking method. This method can be utilized in both solar power stations and standalone systems, such as a building or water pumps to track the sun. With the help of a stepper motor, the angle of incidence is changed constantly while a controller simultaneously compares the maximum received power from each angle, As a result, the system will find correct direction toward the sun. In this method the maximum value of solar energy is captured at any time during a day. Its manufacturing cost is much less than sensor based solar trackers and also it can accurately track the sun in different weather conditions such as cloudy sky. The advantage of this system is that it works regardless of any current or light sensors. The proposed method is verified by the simulations and experiments.

Original languageEnglish
Pages (from-to)532-541
Number of pages10
JournalInternational Journal of Renewable Energy Research
Issue number1
Publication statusPublished - 1 Mar 2019
Externally publishedYes


  • Sensor-less single-axis tracker
  • Solar energy
  • Solar PV panel
  • Solar tracker

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology


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