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Sammi Brie (talk | contribs) Adding local short description: "Transmits electricity between two alternating current frequency domains", overriding Wikidata description "machine used to transmit electricity between two alternating current frequency domains" |
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{{Short description|Transmits electricity between two alternating current frequency domains}}
{{Refimprove|date=May 2016}}
A '''variable-frequency transformer''' ('''VFT''') is used to transmit [[electric power|electricity]] between two ([[wikt:asynchronous|asynchronous]] or synchronous) [[alternating current]] [[frequency]] domains. The VFT is a relatively recent development. Most asynchronous grid inter-ties use [[high-voltage direct current]] converters, while synchronous grid inter-ties are connected by lines and "ordinary" [[electrical transformer|transformer]]s, but without the ability to control power flow between the systems.
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