Language:

Sensorless Control of Dual-Active-Bridge Converter with Reduced-Order Proportional-Integral Observer

Energies (Basel), 2018-04, Vol.11 (4), p.931 [Peer Reviewed Journal]

Copyright MDPI AG 2018 ;ISSN: 1996-1073 ;EISSN: 1996-1073 ;DOI: 10.3390/en11040931

Full text available

Citations Cited by

Actions
1. Add to My Research
2. Remove from My Research
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
Sensorless Control of Dual-Active-Bridge Converter with Reduced-Order Proportional-Integral Observer
Author: Nguyen, Duy-Dinh ; Nguyen, Dinh-Hoa ; Funabashi, Toshihisa ; Fujita, Goro
Subjects: Accuracy ; Active control ; Analog to digital conversion ; Approximation ; Bandwidths ; Bridges ; Control systems ; Control theory ; Controllers ; Data processing ; dual-active-bridge DC/DC converter ; Electric bridges ; Electric converters ; Electric potential ; Electrical engineering ; Electricity distribution ; Feedback ; Feedback control ; Feedback control systems ; Feedforward control ; feedforward current control ; Information systems ; Integrals ; Model reduction ; observer-based control system ; Proportional integral ; proportional integral observer ; reduced-order observer ; Sampling ; Sensors ; System dynamics ; Variation ; Voltage ; Voltage converters (DC to DC)
Is Part Of: Energies (Basel), 2018-04, Vol.11 (4), p.931
Description: When controlling a Dual-Active-Bridge (DAB) DC/DC converter, the high frequency terminal current is usually measured for use in the current feedback controller. In order to measure that current, a wide bandwidth sensor accompanied with high-speed amplifiers are required. Furthermore, a high Analog-to-Digital sampling rate is also necessary for sampling and processing the measured data. To avoid those expensive requirements, this paper proposes an alternative control method for the DAB converter. In the proposed method, the terminal current is estimated by a reduced-order proportional integral observer. A technique is also proposed to reduce the phase drift effect when the voltages at two terminals are not matched. Afterwards, a combined current feedforward-voltage feedback control system is developed to enhance the system dynamics and to regulate the output voltage. This control system needs only the information of the terminal voltages and no current sensor is required. Experimental results show that the observer can estimate the terminal current very quickly with the accuracy of more than 98 % . In addition, the output voltage is well regulated with a fluctuation of less than ± 2.6 % and a settling time of less than 6.5 ms in the presence of a 30 % load change.
Publisher: Basel: MDPI AG
Language: English
Identifier: ISSN: 1996-1073
EISSN: 1996-1073
DOI: 10.3390/en11040931
Source: GFMER Free Medical Journals
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

Back to results list

Result 1 Next Go to Next page


INSPIRE LIBRARY - TON DUC THANG UNIVERSITY	(84-028) 37 755 057	Feedback
19 Nguyen Huu Tho St. Dist.7, HCM	thuvien@tdtu.edu.vn	Feedback

Sensorless Control of Dual-Active-Bridge Converter with Reduced-Order Proportional-Integral Observer

Copyright MDPI AG 2018 ;ISSN: 1996-1073 ;EISSN: 1996-1073 ;DOI: 10.3390/en11040931

Searching Remote Databases, Please Wait