Improved Frequency Estimation in Unbalanced Three-Phase Power System Using Coupled Orthogonal Constant Modulus Algorithm

A new iterative method for frequency estimation in the unbalanced three-phase power system is proposed. The proposed solution is based on the transformation of unbalanced three-phase voltage signal into a complex exponential by using the orthogonal constant modulus algorithm. In addition, based on t...

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Veröffentlicht in:IEEE transactions on power delivery Jg. 32; H. 4; S. 1809 - 1816
Hauptverfasser: Zecevic, Zarko, Krstajic, Bozo, Popovic, Tomo
Format: Journal Article
Sprache:Englisch
Veröffentlicht: IEEE 01.08.2017
Schlagworte:
Adaptive algorithms
Algorithm design and analysis
Complex least mean square (CLMS)
Frequency estimation
Iterative methods
Mathematical model
Power systems
Transforms
unbalanced three-phase voltage
ISSN:0885-8977, 1937-4208
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Zusammenfassung:A new iterative method for frequency estimation in the unbalanced three-phase power system is proposed. The proposed solution is based on the transformation of unbalanced three-phase voltage signal into a complex exponential by using the orthogonal constant modulus algorithm. In addition, based on the transformed signal, a simple adaptive algorithm for frequency estimation is proposed. Beside the proposed approach, any frequency estimator designed for a single-tone complex exponential can be used here, which is also the advantage of the proposed method. Simulation results confirm that the proposed algorithm exhibits better performance compared to the considered algorithms.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2016.2586106