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Fundamental Device Switching Frequency Control of Current-Fed Nine-Level Inverter for Solar Application.
- Source :
-
IEEE Transactions on Industry Applications . Mar/Apr2020, Vol. 56 Issue 2, p1839-1849. 11p. - Publication Year :
- 2020
-
Abstract
- The aim of this article is to develop a real-time computational method that determines switching angles of selective harmonic elimination (SHE) for operating nine-level (9 L) current-fed multilevel converter (MLC). The computation algorithm for SHE conventionally requires huge calculation time to identify switching angles of the inverter, and hence, a truth table based modulation is applied for operating the converter in real time. To overcome this, a new analytical method has been proposed in this article that minimizes the computation time to calculate the switching angles. However, these switching angles cannot be directly applied to current-fed MLCs. Unlike voltage fed converters, the current-fed converters have additional operational constraints on the modulation technique. Hence, in this article, a conversion technique has been utilized to convert the unconstraint SHE angles into constraint angles in order to operate current-fed MLCs. A low-power prototype of 9 L current source inverter has been set-up to experiment and validate the proposed real-time calculation method at the fundamental frequency of 50 Hz. [ABSTRACT FROM AUTHOR]
- Subjects :
- *VOLTAGE-frequency converters
*ALGORITHMS
*ELECTRIC inverters
*SOLAR energy
Subjects
Details
- Language :
- English
- ISSN :
- 00939994
- Volume :
- 56
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industry Applications
- Publication Type :
- Academic Journal
- Accession number :
- 143315473
- Full Text :
- https://doi.org/10.1109/TIA.2019.2957714