Metadata only
Date
2024-05Type
- Journal Article
ETH Bibliography
yes
Altmetrics
Abstract
Electronic transformers enable galvanic isolation and voltage level adaption at high frequency, and thus the magnetic core volume and weight can be reduced substantially compared to traditional transformers operating at the grid frequency. This article introduces a novel phase-modular single-stage three-phase electronic transformer (3Φ-ET) which advantageously enables the use of standard power transistors with unipolar voltage blocking capability. The output frequency is identical to the grid input frequency and the bidirectional power flow can be adjusted by means of a simple dual active bridge (DAB)-type modulation which results in inherently sinusoidal grid currents. The 3Φ-ET is thoroughly described and experimental waveforms with a 6 kW prototype system operated in a 400 V (rms, line-line) three-phase grid provide a proof of concept and verify the theoretical considerations. Show more
Publication status
publishedExternal links
Journal / series
IEEE Transactions on Power ElectronicsVolume
Pages / Article No.
Publisher
IEEESubject
AC–AC; bidirectional; converter; dual active bridge (DAB); electronic transformer; high-frequency isolated; solid-state transformer (SST); three-phaseMore
Show all metadata
ETH Bibliography
yes
Altmetrics