Abstract
This paper has introduced a four-level π-type converter for low-voltage applications which has a simple structure with six switches per phase leg. The line output voltage has seven levels and the output harmonics is much lower than the conventional two-level converter. The switching states and their associated output voltage levels have been analyzed. A simple carrier-based modulation method with zero-sequence signal injection has been devised to modulate the converter and regulate dc-link neutral points’ voltages. The two neutral points’ voltages can be well controlled with a back to back configuration even under high modulation index and high power factor. Simulation and experimental results have validated the topology, modulation and control strategy for the four-level π-type converter.
| Original language | English |
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| Title of host publication | 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe) |
| Subtitle of host publication | Proceedings of a meeting held 8-10 September 2015, Geneva, Switzerland |
| Place of Publication | Switzerland |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Pages | 1-10 |
| Number of pages | 10 |
| ISBN (Electronic) | 9789075815238 |
| ISBN (Print) | 9781479982776 |
| DOIs | |
| Publication status | Published - Jan 2016 |
| Event | EPE’15 ECCE – Europe - Switzerland, Geneva, Switzerland Duration: 8 Sept 2015 → 10 Sept 2015 |
Conference
| Conference | EPE’15 ECCE – Europe |
|---|---|
| Country/Territory | Switzerland |
| City | Geneva |
| Period | 8/09/15 → 10/09/15 |
Keywords
- Multilevel converters
- Converter circuit
- Converter control
- Modulation strategy