An Instantaneous Phase Angle Detection Algorithm under Asymmetric Grid Voltage Dips

Peng Wang; Ling Zhu; Kan Zhang

doi:10.4028/www.scientific.net/AMM.291-294.401

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 291-294An Instantaneous Phase Angle Detection Algorithm...

An Instantaneous Phase Angle Detection Algorithm under Asymmetric Grid Voltage Dips

Abstract:

In order to meet the requirements of LVRT and realize the asymmetry control in wind power system, the voltage phase, amplitude, and frequency are needed in real time under both asymmetrical and symmetrical low Voltage condition. Based on double DQ synchronous rotating coordinate system and software phase-locked loop (SPLL), the amplitude and phase angle of both positive and negative sequence components are obtained. Finally, through Matlab simulation and Low voltage device experiment, it proves that the algorithm has the advantages of accurate detection, interference resistance, and strong adaptability.

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Periodical:

Applied Mechanics and Materials (Volumes 291-294)

Pages:

401-406

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.291-294.401

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Online since:

February 2013

Authors:

Peng Wang, Ling Zhu, Kan Zhang

Keywords:

Asymmetry Control, Grid Voltage Angle Detection, Low Voltage Ride through (LVRT), Software Phase-Locked Loop

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References

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