A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications
In ultracapacitor applications, generally, a bi-directional converter is connected to a DC bus and is designed to compensate rapid load variations on the bus. During transient phases, overloaded DC bus can push the converter out of its operating limits. For providing the necessary power, converters...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
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Taylor & Francis
2018
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| Online Access: | https://eprints.nottingham.ac.uk/51446/ |
| _version_ | 1848798498597634048 |
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| author | Ahmadi, Behzad Barati, Farhad Karimi, Charif |
| author_facet | Ahmadi, Behzad Barati, Farhad Karimi, Charif |
| author_sort | Ahmadi, Behzad |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In ultracapacitor applications, generally, a bi-directional converter is connected to a DC bus and is designed to compensate rapid load variations on the bus. During transient phases, overloaded DC bus can push the converter out of its operating limits. For providing the necessary power, converters should be put in parallel, while each converter is limited into its optimal operating range. In a boost converter, this operating limit can be related to the inductor current and UC voltage. In this study, a variable current-limit is proposed for inductor current which then determines the operating range of the boost converter. This method will provide stability of the converter during overload transients. An experimental setup consisting of a bidirectional converter, a controllable load/source, and an ultracapacitor is presented, to validate the proposed method. Several scenarii are applied to analyze the performance of the system in overloaded phases and theoretical and experimental results are presented. |
| first_indexed | 2025-11-14T20:20:44Z |
| format | Article |
| id | nottingham-51446 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T20:20:44Z |
| publishDate | 2018 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-514462019-04-19T04:30:25Z https://eprints.nottingham.ac.uk/51446/ A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications Ahmadi, Behzad Barati, Farhad Karimi, Charif In ultracapacitor applications, generally, a bi-directional converter is connected to a DC bus and is designed to compensate rapid load variations on the bus. During transient phases, overloaded DC bus can push the converter out of its operating limits. For providing the necessary power, converters should be put in parallel, while each converter is limited into its optimal operating range. In a boost converter, this operating limit can be related to the inductor current and UC voltage. In this study, a variable current-limit is proposed for inductor current which then determines the operating range of the boost converter. This method will provide stability of the converter during overload transients. An experimental setup consisting of a bidirectional converter, a controllable load/source, and an ultracapacitor is presented, to validate the proposed method. Several scenarii are applied to analyze the performance of the system in overloaded phases and theoretical and experimental results are presented. Taylor & Francis 2018-04-19 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/51446/8/A%20variable%20current-limit%20control%20scheme%20for%20a%20bi-directional%20converter%20u.._.pdf application/pdf en https://eprints.nottingham.ac.uk/51446/1/A%20Variable%20Current%20Limit%20Control%20Scheme%20for%20a%20Bi%20directional%20Converter%20u.._%20%28002%29.pdf Ahmadi, Behzad, Barati, Farhad and Karimi, Charif (2018) A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications. Electric Power Components and Systems, 46 (3). pp. 278-289. ISSN 1532-5008 DC-DC converters ultracapacitor storage systems voltage regulation current limiters https://www.tandfonline.com/doi/full/10.1080/15325008.2018.1445139 doi:10.1080/15325008.2018.1445139 doi:10.1080/15325008.2018.1445139 |
| spellingShingle | DC-DC converters ultracapacitor storage systems voltage regulation current limiters Ahmadi, Behzad Barati, Farhad Karimi, Charif A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications |
| title | A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications |
| title_full | A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications |
| title_fullStr | A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications |
| title_full_unstemmed | A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications |
| title_short | A variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications |
| title_sort | variable current-limit control scheme for a bi-directional converter used in ultracapacitor applications |
| topic | DC-DC converters ultracapacitor storage systems voltage regulation current limiters |
| url | https://eprints.nottingham.ac.uk/51446/ https://eprints.nottingham.ac.uk/51446/ https://eprints.nottingham.ac.uk/51446/ |