Transformer unit and method for operating a transformer unit
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United States of America Patent
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Oct 22, 2019
Grant Date -
May 23, 2019
app pub date -
Nov 15, 2018
filing date -
Nov 23, 2017
priority date (Note) -
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Abstract
A transformer unit includes a primary side including a primary coil wound around a transformer core and a secondary side including a secondary coil wound around the core. During operation, a secondary-side actual voltage is established upon application of a primary voltage to the primary coil. The transformer unit includes a first measuring coil, wound around the transformer core, to determine a first measuring voltage; a measuring element, arranged and designed on the primary side to determine a second measuring voltage, the second measuring voltage being correlatable with the additional secondary-side voltage drop; and a controller to control operation of the transformer unit, the controller being designed to adjust the primary voltage so as to induce a secondary desired voltage in the secondary coil, and adjust the primary voltage as a function of the first measuring voltage and the second measuring voltage.
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