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A Cascade Boost-Switched-Capacitor-Converter Two Level Inverter With an Optimized Multilevel Output Waveform.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Dec2005, Vol. 52 Issue 12, p2763-2770. 8p. - Publication Year :
- 2005
-
Abstract
- Two structures, a switched-capacitor (SC)-based boost converter and a two-level inverter, are connected in cascade. The de multilevel voltage of the first stage becomes the input voltage of the classical inverter, resulting in a staircase waveform for the inverter output voltage. Such a multilevel waveform is close to a sinusoid; its harmonics content can be reduced by multiplying the stage number of the SC converter. The output low-pass filter, customary after a two-level inverter, becomes obsolete, resulting in a small size of the system, as the SC circuit can be miniaturized. Both stages are operated at a high switching frequency, resulting in a high-frequency inverter output, as required by some industrial applications. A Fourier analysis of the output waveform is performed. The design is optimized with reference to the nominal duty-cycle for obtaining the minimum total harmonic distortion. Simulations and experiments on two prototypes, one with a five-level output and one with a seven-level output, confirm the theoretical analysis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 52
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 19253296
- Full Text :
- https://doi.org/10.1109/TCSI.2005.852205