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Operating Limits for Low-Capacitance Cascaded H-Bridge Static Compensators.
- Source :
-
IEEE Transactions on Power Electronics . Mar2022, Vol. 37 Issue 3, p3421-3433. 13p. - Publication Year :
- 2022
-
Abstract
- The cascaded H-bridge (CHB) low-capacitance static compensator (LC-StatCom) has a limited inductive region compared to a conventional StatCom, both in balanced and unbalanced conditions, due to the inherent large oscillations on the capacitor voltages. This article presents a detailed analysis of the viable operating region in these converters that takes into account the inherent large oscillations. The analysis facilitates sizing of the dc-link capacitors to ensure that the StatCom is able to inject a given range of positive- and negative-sequence current. Though the analysis is generic and applicable to the CHB StatComs with relatively large capacitance values, it is more relevant in the LC-StatComs. In addition, the article derives reference steady-state signals that can be used as feedforward terms in LC-StatCom control loops to enhance the control performance. The article presents simulation and experimental results, in balanced and unbalanced conditions to corroborate the proposed analysis. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CAPACITORS
*VOLTAGE control
*OSCILLATIONS
Subjects
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 37
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 153953282
- Full Text :
- https://doi.org/10.1109/TPEL.2021.3111201