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Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus
Dissertation (MEng (Electrical Engineering))--University of Pretoria, 2007.
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University of Pretoria
2013
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| _version_ | 1867613725809180672 |
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| access_status_str | Open Access |
| author2 | Gitau, Michael Njoroge |
| author_browse | Gitau, Michael Njoroge |
| author_facet | Gitau, Michael Njoroge |
| collection | Thesis |
| dc_rights_str_mv | © University of Pretor |
| description | Dissertation (MEng (Electrical Engineering))--University of Pretoria, 2007. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/29031 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:40:43.223Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/29031 Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus Gitau, Michael Njoroge cobus.visser@kentron.co.za Visser, Jacobus Hendrik Rectifier Vienna Dc-voltage Generator Three-phase Constant frequency Analogue control Derating Digital control Modal analysis Power factor correction. UCTD Dissertation (MEng (Electrical Engineering))--University of Pretoria, 2007. AC-DC converters find application in every day life as a front-end to DC-DC and DC-AC converters. Active three-phase converters shape the three-phase input current to be sinusoidal and to be in-phase with the input voltage, as well as to provide a steady DC output voltage. This thesis investigates various active three-phase rectifier and control topologies and identifies a rectifier and control topology most suitable for use in converting a variable voltage variable frequency generator output to a DC voltage. In this dissertation, design relations are derived for determining the plant transfer response (for the suitable topology/controller), design equations are derived for designing/choosing the filter components, and guidelines are derived that will assist in choosing the right semi-conductor components and to give an estimation of expected system efficiency. The dissertation investigates the implementation of both analogue and digital control and provides implementation methodologies for both controllers. Expected results are verified by simulation and a build-up prototype. It was shown that the VIENNA rectifier is able to convert a generator type input, with variable input voltage amplitude and variable frequency, to a constant DC-bus voltage whilst controlling the input current to be sinusoidal and in phase with the input voltage. The rectifier was able to maintain a constant DC voltage at the output for input voltages as low as half the rated input voltage and for an equivalent output power of half the rated output power. This suggests that the VIENNA rectifier, controlled as a dual-boost rectifier, is suitable for applications that require power factor corrections and simultaneously operate from a wide input voltage range. Electrical, Electronic and Computer Engineering MEng unrestricted 2013-09-07T14:44:07Z 2007-11-22 2013-09-07T14:44:07Z 2007-04-18 2007-11-22 2007-10-25 Dissertation Visser, JH 2007, Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/29031> Pretoria http://hdl.handle.net/2263/29031 http://upetd.up.ac.za/thesis/available/etd-10252007-163633/ © University of Pretor application/pdf University of Pretoria |
| spellingShingle | Rectifier Vienna Dc-voltage Generator Three-phase Constant frequency Analogue control Derating Digital control Modal analysis Power factor correction. UCTD Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus |
| title | Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus |
| title_full | Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus |
| title_fullStr | Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus |
| title_full_unstemmed | Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus |
| title_short | Active converter based on the VIENNA rectifier topology interfacing a three-phase generator to a DC-bus |
| title_sort | active converter based on the vienna rectifier topology interfacing a three phase generator to a dc bus |
| topic | Rectifier Vienna Dc-voltage Generator Three-phase Constant frequency Analogue control Derating Digital control Modal analysis Power factor correction. UCTD |
| url | http://hdl.handle.net/2263/29031 http://upetd.up.ac.za/thesis/available/etd-10252007-163633/ |