| Autor: |
SUBRAHMANYAM, J. B. V., CHANDRAKANTH, P. |
| Předmět: |
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| Zdroj: |
Acta Electrotehnica; 2012, Vol. 53 Issue 2, p89-98, 10p |
| Abstrakt: |
A new multivariable dynamic model and a control approach have been proposed for a voltage-source converter (VSC) based on adopting instantaneous real- and reactive-power components as the VSC dynamic variable. Using power components as the dynamic variables reduces the degree of nonlinearities of the VSC model in comparison with the conventional VSC model that uses current components as variables. Furthermore, since waveforms of power components are independent of the selected coordinates, the proposed control is more robust to the conventionally unmodelled dynamics such as dynamics of the VSC phase-locked loop system. The proposed control system regulates the VSC ac-side real- and reactive-power components and the dc-side voltage. This paper also introduces an over current limiting mechanism, based on limiting the VSC power exchange during abnormal conditions, for the proposed control system. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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