Imperial College London
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ProfessorThomasParisini

Faculty of Engineering, Department of Electrical and Electronic Engineering

Chair in Industrial Control, Head of Group for CAP
 
 
 
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Contact

 

+44 (0)20 7594 6240t.parisini Website

 
 
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Location

 

1114Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Chen:2018:10.1109/TPEL.2017.2789303,
author = {Chen, B and Pin, G and Ng, WM and Li, P and Parisini, T and Hui, SYR},
doi = {10.1109/TPEL.2017.2789303},
journal = {IEEE Transactions on Power Electronics},
pages = {9318--9330},
title = {Online detection of fundamental and interharmonics in AC mains for parallel operation of multiple grid-connected power converters},
url = {http://dx.doi.org/10.1109/TPEL.2017.2789303},
volume = {33},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Parallel operation of multiple grid-connected power converters through LCL filters is known to have the potential problem of triggering oscillations in the ac mains. Such oscillatory frequencies are not integral multiples of the fundamental frequency and hence form a new source of interharmonics. Early detection of such oscillations is essential for the parallel power converters to move out of the unstable zone. This paper presents an online observer-based algorithm that can perform fast detection of interharmonics within a specified frequency band. The algorithm has been adopted in a specific and reduced form from an integral observer algorithm for detection of fundamental and interharmonic voltage components in the ac mains. A new method based on the kernel signal for fast interharmonic detection is proposed and practically verified. It has been implemented in a digital controller to detect oscillations such as those occurring between two grid-connected power converters. The practical results indicate that the algorithm can locate such frequency within the specific frequency band within 1 mains cycle.
AU  - Chen,B
AU  - Pin,G
AU  - Ng,WM
AU  - Li,P
AU  - Parisini,T
AU  - Hui,SYR
DO  - 10.1109/TPEL.2017.2789303
EP  - 9330
PY  - 2018///
SN  - 0885-8993
SP  - 9318
TI  - Online detection of fundamental and interharmonics in AC mains for parallel operation of multiple grid-connected power converters
T2  - IEEE Transactions on Power Electronics
UR  - http://dx.doi.org/10.1109/TPEL.2017.2789303
UR  - http://hdl.handle.net/10044/1/55689
VL  - 33
ER  -
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