The Thyristor Electronic Transformer: a Power Converter Using a High-Frequency Link

The electronic transformer is a device which behaves in the same manner as a conventional power transformer in that it steps voltage levels up or down while providing isolation and can accommodate load current of any power factor. It contains thyristor power switches which convert the low-frequency...

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Bibliographic Details
Published inIEEE transactions on industry and general applications Vol. IGA-7; no. 4; pp. 451 - 457
Main Author McMurray, William
Format Journal Article
LanguageEnglish
Published IEEE 01.07.1971
Subjects
Capacitors
Diodes
Frequency conversion
Power transformers
RLC circuits
Solid state circuits
Switches
Thyristors
Tuned circuits
Voltage
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ISSN0018-943X
DOI10.1109/TIGA.1971.4181326

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Summary:The electronic transformer is a device which behaves in the same manner as a conventional power transformer in that it steps voltage levels up or down while providing isolation and can accommodate load current of any power factor. It contains thyristor power switches which convert the low-frequency (dc to 400-Hz) voltage wave to a high-frequency (in the order of 10 000 Hz) wave. A comparatively small magnetic transformer then provides the voltage level transformation and isolation functions. Similar thyristor power switches then reconstruct the original low-frequency wave at the desired output voltage level. This device can incorporate additional features not found in a conventional transformer, such as current limiting and current interruption. The theory of operation is presented and confirmed by experimental data.
ISSN:0018-943X
DOI:10.1109/TIGA.1971.4181326