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A Medium-Voltage Motor Drive With a Modular Multilevel PWM Inverter.
- Source :
- IEEE Transactions on Power Electronics; Jul2010, Vol. 25 Issue 7, p1786-1799, 14p
- Publication Year :
- 2010
-
Abstract
- This paper describes the control and operating performance of a modular multilevel PWM inverter for a transformer-less medium-voltage motor drive. The inverter is prominent in the modular arm structure consisting of a cascaded stack of multiple bidirectional chopper-cells. The dominant ac-voltage fluctuation with the same frequency as the motor (inverter) frequency occurs across the dc capacitor of each chopper-cell. The magnitude of the voltage fluctuation is inversely proportional to the motor frequency. This paper achieves theoretical analysis on the voltage fluctuation, leading to system design. A downscaled model rated at 400 V and 15 kW is designed and built up to confirm the validity and effectiveness of the nine-level (17-level in line-to-line) PWM inverter for a medium-voltage motor drive. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 25
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 51907946
- Full Text :
- https://doi.org/10.1109/TPEL.2010.2042303