Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35923
PIRA download icon_1.1View/Download Full Text
Title: Frequency-adaptive filtering of low-frequency harmonic current in fuel cell power conditioning systems
Authors: Cao, L 
Loo, KH 
Lai, YM 
Issue Date: Apr-2015
Source: IEEE transactions on power electronics, Apr. 2015, v. 30, no. 4, p. 1966-1978
Abstract: Based on one of the most researched multiinput dc-dc converter topologies for renewable energy systems, the multi-input dual-active bridge (DAB) dc-dc converter, the effectiveness of harmonic current absorption by the energy storage branch in fuel cell power conditioning systems is critically evaluated. The closed-loop output impedances of the converter under single-voltage-loop and dual-loop controls are derived and compared. It is shown that both control strategies can effectively reduce the converter's closed-loop output impedance, thus favoring the flow of harmonic current and prevent it from being drawn from either the fuel cell branch or the dc-link capacitor. However, as shown by experimental results, the use of conventional PI control alone still produces noticeable voltage ripple on the dc voltage bus due to harmonic current being drawn from the dc-link capacitor. Proportional-resonant control is proposed to effectively compensate for the dc-bus voltage variation by generating an extremely low impedance path for harmonic current flow at specific frequency. An analog-based frequency tracking circuit is further proposed to adjust the resonant frequency for compensating the effect of harmonic frequency variation.
Keywords: DAB dc-dc converter
Fuel cell control
Low-frequency current ripple
Multi-input dc-dc converter
PR control
Renewable energy system
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE transactions on power electronics 
ISSN: 0885-8993
EISSN: 1941-0107
DOI: 10.1109/TPEL.2014.2323398
Rights: © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
The following publication L. Cao, K. H. Loo and Y. M. Lai, "Frequency-Adaptive Filtering of Low-Frequency Harmonic Current in Fuel Cell Power Conditioning Systems," in IEEE Transactions on Power Electronics, vol. 30, no. 4, pp. 1966-1978, April 2015 is available at https://doi.org/10.1109/TPEL.2014.2323398.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Frequency-adaptive_Filtering_Low-frequency.pdfPre-Published version4.44 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Final Accepted Manuscript
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

67
Last Week
0
Last month
Citations as of Jan 29, 2023

Downloads

5
Citations as of Jan 29, 2023

SCOPUSTM   
Citations

31
Last Week
1
Last month
Citations as of Jan 26, 2023

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.