Rapid Extraction of the Fundamental Components for Non-Ideal Three-Phase Grid Based on an Improved Sliding Discrete Fourier Transform
Abstract
:1. Introduction
2. Characteristics of the Non-Ideal Grid
3. Signals Extraction
3.1. Traditional SDFT
3.2. Proposed ISDFT
4. Experimental Results
4.1. Signal Tracking Performance
4.2. Harmonic Extraction
4.3. Other Non-Ideal Signals Extraction
4.4. Non-Ideal Signals Extraction Considering Load Changes
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Harmonic Extraction Method | 5th Harmonic Extraction Time (μs) | 7th Harmonic Extraction Time (μs) |
---|---|---|
DFT | 251.41 | 228.93 |
SDFT | 157.28 | 143.22 |
ISDFT | 87.19 | 78.62 |
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Li, K.; Nai, W. Rapid Extraction of the Fundamental Components for Non-Ideal Three-Phase Grid Based on an Improved Sliding Discrete Fourier Transform. Electronics 2022, 11, 1915. https://doi.org/10.3390/electronics11121915
Li K, Nai W. Rapid Extraction of the Fundamental Components for Non-Ideal Three-Phase Grid Based on an Improved Sliding Discrete Fourier Transform. Electronics. 2022; 11(12):1915. https://doi.org/10.3390/electronics11121915
Chicago/Turabian StyleLi, Kai, and Wei Nai. 2022. "Rapid Extraction of the Fundamental Components for Non-Ideal Three-Phase Grid Based on an Improved Sliding Discrete Fourier Transform" Electronics 11, no. 12: 1915. https://doi.org/10.3390/electronics11121915