Open AccessA Shortest Data Window Algorithm for Detecting the Power Factor in presence of non-sinusoidal load current
Author(s) -
Safaa S. Omran,
Ali. Sh. Al-Khalid,
Amer Atta Yaseen
Publication year - 2019
Publication title -
international journal of power electronics and drive systems/international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
eISSN - 2722-2578
pISSN - 2722-256X
DOI - 10.11591/ijece.v9i5.pp3956-3966
Subject(s) - power factor , power (physics) , ac power , algorithm , total harmonic distortion , computer science , volt ampere , harmonic , measure (data warehouse) , voltage , electric power system , single phase electric power , control theory (sociology) , electrical engineering , constant power circuit , engineering , acoustics , physics , control (management) , quantum mechanics , database , artificial intelligence
During recent years, nonlinear power electronic equipments introduce harmonic pollution on electric power systems. It makes the traditional power factor meter can not act accurately when it monitors unbalanced and harmonic loads. In this paper, a new algorithm for detecting the power factor in presence of non-sinusoidal load current is proposed. The proposed algorithm detects the true power factor exactly. By uses only two successive sampled data points of the voltage and the current for each displacement power factor value calculation and two sampled data points for each distortion power factor value calculation, the total/true power factor becomes easy to measure using these values directly. The proposed detector implemented using microcontroller as a main part and has been tested for single phase power system. The test results show that it can measure the true power factor of the loads quickly and accurately.