{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/46019"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/46019","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Phase-controlled rectification for permanent-magnet downhole alternators","abstract":"This thesis develops a method of phase-controlled rectification to be used with permanent-magnet downhole alternators. The design faces unique challenges imposed by the downhole environment. The thesis discusses the design, simulation, and construction of the rectifier. A high-side semi-bridge phase-controlled model is proposed. The model is verified in simulation. A prototype rectifier was built and tested using downhole certified components. A controller was designed using the Spectrum Digital TMS320F2812 board. The prototype met all design objectives. 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