Back to Search
Start Over
Asymmetric cascaded H-bridge topology with 25-level output voltage based on modular multilevel DSCC inverters
- Source :
- 2017 IEEE Energy Conversion Congress and Exposition (ECCE).
- Publication Year :
- 2017
- Publisher :
- IEEE, 2017.
-
Abstract
- This paper introduces an asymmetric cascaded multilevel inverter consisting of series-connected two nine-level (9L) H-bridge cells, which are based on modular multilevel cascade converter (MMCC) with double-star chopper cells (DSCC). An unequal dc voltage ratio of 1:2 is used, so that the proposed topology can generate 25 output voltage levels. A modulation strategy for the inverter is proposed. A comparative analysis is performed, demonstrating that the proposed inverter offers reduced losses in the semiconductor devices and smaller number of components compared to 25-level conventional MMCC. Besides that, in order to maintain the stable system, a circulating current control and voltage balancing algorithm are discussed. At last, simulation and experimental results are presented to validate the proposed system.
- Subjects :
- Engineering
business.industry
020209 energy
Topology (electrical circuits)
02 engineering and technology
Modular design
Topology
H bridge
law.invention
Chopper
Capacitor
Cascade converter
law
0202 electrical engineering, electronic engineering, information engineering
Electronic engineering
Inverter
business
Voltage
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2017 IEEE Energy Conversion Congress and Exposition (ECCE)
- Accession number :
- edsair.doi...........40a2b31ced53afc736c3abdf29f83203