A DC Transformer

Metadata Updated: May 2, 2019

The goal of the project was to demonstrate a true direct current (DC) transformer, a new electro-mechanical component with potentially high power applications; in other words, an elementary device that could convert DC voltage/current directly to a different DC voltage/current. Alternating current (AC) transformers achieve this conversion for AC voltages/currents through the use of coils, ferrous cores, and an application of the Faraday Induction Law, where time varying magnetic fields are created by and then create alternating voltages in a coil. During the period of this project three different possible DC transformer concepts were proposed, theoretically modeled, and then experimentally tested with the intent of demonstrating a true dc transformer; i.e. an electrical device into which a given DC voltage and current can be applied and which will generate a different voltage and current, effectively changing the impedance of a power supply.A component level DC transformer is described in which no alternating currents or voltages are present. It operates by combining features of a homopolar motor and a homopolar generator, both DC devices, such that the output voltage of a DC power supply can be stepped up (or down) with a corresponding step down (or up) in current.Based on demonstrated technology, this DC transformer should be scalable to low megawatt levels, but it is more suited to high current than high voltage applications. Significant development would be required before it could achieve the kilovolt levels needed for DC power transmission.[HTML_REMOVED]

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_10589
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 6bdc1d2c-11d7-403d-a314-ebc8cce08986
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2013-06-01
Homepage URL https://techport.nasa.gov/view/10589
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 5adca138c3c5292bdbf0c24ff2c3a0dcb5b96d9b
Source Schema Version 1.1

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