English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This article deals with a new nonlinear transformation providing representation of unbalanced three-phase signals (voltage and currents) as vectors that have constant components in a new rotating d'q' frame. Using the proposed transformations, the control system of a power electronic converter operating with an unbalanced grid can be equipped with proportional-integral (PI) controllers, without the use of resonant terms, for which antiwindup structures are more complicated and nonintuitive. This article presents the derivation of new direct and inverse transformations, features, a power converter model in a new frame, simulation results showing the waveforms of signals transformed to the new non-Cartesian frame, and simulation and experimental results of the voltage-oriented control for a grid-connected power converter.

New Stationary Frame Transformation for Control of a Three-Phase Power Converter Under Unbalanced Grid Voltage Sags