Imperial College London
Professor Shu Hui

ProfessorShuHui

Faculty of Engineering, Department of Electrical and Electronic Engineering

Chair in Power Electronics
 
 
 
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Contact

 

+44 (0)20 7594 6118r.hui

 
 
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Location

 

1108aElectrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lam:2022:10.1109/TCST.2021.3125202,
author = {Lam, HS and Li, P and Chen, B and Ng, WM and Parisini, T and Hui, SYR},
doi = {10.1109/TCST.2021.3125202},
journal = {IEEE Transactions on Control Systems Technology},
pages = {1821--1833},
title = {Exponential modulation integral observer for online detection of the fundamental and harmonics in grid-connected power electronics equipment},
url = {http://dx.doi.org/10.1109/TCST.2021.3125202},
volume = {30},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Harmonic current estimation is required in active power filters for compensation purposes. The most efficient way of calculating the total harmonic current up to the infinite order is to subtract the fundamental component from the distorted current. Direct determination of the fundamental component of a distorted current of mains frequency was realized recently with a third-order modulation integral observer. This article shows that using an exponential modulation function (Exp-MF) for the integral observer will: 1) significantly enhance the robustness of the observer against noise and 2) automatically remove the low-frequency envelope arising from the D/A and A/C sampling processes compared to previous polynomial modulation function. These new and advantageous features are supported with detailed analysis and experimental verification. The robust observer can be implemented in grid-connected power electronics circuits that require the instantaneous information of the fundamental and/or harmonic currents. Practical comparative tests with the adaptive notch filter and recursive discrete Fourier transform (DFT) methods in an active power filter have confirmed the good performance under both the steady and dynamic states of the proposed Exp-MF integral observer.
AU  - Lam,HS
AU  - Li,P
AU  - Chen,B
AU  - Ng,WM
AU  - Parisini,T
AU  - Hui,SYR
DO  - 10.1109/TCST.2021.3125202
EP  - 1833
PY  - 2022///
SN  - 1063-6536
SP  - 1821
TI  - Exponential modulation integral observer for online detection of the fundamental and harmonics in grid-connected power electronics equipment
T2  - IEEE Transactions on Control Systems Technology
UR  - http://dx.doi.org/10.1109/TCST.2021.3125202
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000732144700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/99672
VL  - 30
ER  -
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