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Natural balancing mechanisms in converters
Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2011.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : University of Stellenbosch
2011
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| _version_ | 1867613846776053760 |
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| access_status_str | Open Access |
| author | Van der Merwe, Johannes Wilhelm (Wim) |
| author2 | Mouton, H. du T. |
| author_browse | Mouton, H. du T. Van der Merwe, Johannes Wilhelm (Wim) |
| author_facet | Mouton, H. du T. Van der Merwe, Johannes Wilhelm (Wim) |
| author_sort | Van der Merwe, Johannes Wilhelm (Wim) |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2011. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/6791 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:42:38.497Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| publisher | Stellenbosch : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/6791 Natural balancing mechanisms in converters Van der Merwe, Johannes Wilhelm (Wim) Mouton, H. du T. University of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Natural balancing Fourier series analysis Modular converters Flying capacitor converter Stability analysis Dissertations -- Electrical engineering Theses -- Electrical engineering Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2011. AFRIKAANSE OPSOMMING: Hierdie proefskrif handel oor die natuurlike balanserings meganismes van veelvlakkige en modulêre omsetters wat fase-skuif dragolf puls wydte modulasie gebruik. Die meganismes kan in twee hoof groepe verdeel word: ‘n swak balanserings meganisme wat afhanklik is van die oorvleuling van die skakelfunksies en ‘n sterk meganisme wat voorkom ongeag of die skakelfunksies oorvleul al dan nie. Die sterk meganisme verdeel verder in twee subgroepe, ‘n direkte oordrag van onbalans energie en ‘n meganisme wat afhang van die verliese in die stelsel. Elkeen van die meganismes word aan die hand van ‘n omsetter topologie waarin die spesifieke meganisme oorheers beskryf en ontleed. In die ondersoek word klem geplaas op die daarstelling van uitdrukkings om die tydskonstantes van herbalansering na ’n afwyking vir elk van die omsetter toplologieë te beskryf. ENGLISH ABSTRACT: This thesis investigates the natural balancing mechanisms in multilevel and modular converters using phase shifted carrier pulse width modulation. Two groups of mechanisms are identified; a weak balancing mechanism that is only present when the switching functions are interleaved and a strong mechanism that occurs irrespective of the interleaving of the switching functions. It is further shown that the strong balancing mechanism can be divided into a balancing mechanism that depends on the direct exchange of unbalance energy and a loss based balancing mechanism. Each of the mechanisms is discussed and analysed using a converter where the specific mechanism dominates as example. Emphasis is placed on the calculation of the rebalancing time constant following a perturbation. Closed form expressions for the rebalancing time constants for each of the analysed converters are presented. Doctoral 2011-02-18T12:42:00Z 2011-03-14T08:41:44Z 2011-02-18T12:42:00Z 2011-03-14T08:41:44Z 2011-03 Thesis http://hdl.handle.net/10019.1/6791 en_ZA University of Stellenbosch 250 p. : ill. application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Natural balancing Fourier series analysis Modular converters Flying capacitor converter Stability analysis Dissertations -- Electrical engineering Theses -- Electrical engineering Van der Merwe, Johannes Wilhelm (Wim) Natural balancing mechanisms in converters |
| title | Natural balancing mechanisms in converters |
| title_full | Natural balancing mechanisms in converters |
| title_fullStr | Natural balancing mechanisms in converters |
| title_full_unstemmed | Natural balancing mechanisms in converters |
| title_short | Natural balancing mechanisms in converters |
| title_sort | natural balancing mechanisms in converters |
| topic | Natural balancing Fourier series analysis Modular converters Flying capacitor converter Stability analysis Dissertations -- Electrical engineering Theses -- Electrical engineering |
| url | http://hdl.handle.net/10019.1/6791 |
| work_keys_str_mv | AT vandermerwejohanneswilhelmwim naturalbalancingmechanismsinconverters |