Abstract
In this paper, a circuit-level decoupling modulation strategy is proposed for the three-level (TL)
neutral-point-clamped (NPC) inverters. With the proposed modulation scheme, the TL-NPC inverter
can be decoupled into two three-level Buck converters in each defined operating section, which makes
the controller design much simpler. The decoupling principle including the driving signal synthesis
and the neutral point potential variation are analyzed detailed. It is found that switching losses can be
reduced by one third and the voltage balance between the dividing dc link capacitors can be achieved
without any feedback control. The simulation results show the validity of theoretical analysis.
| Original language | English |
|---|---|
| Title of host publication | 14. European Conference on Power Electronics and Applications |
| Publication date | 2011 |
| ISBN (Print) | 9789075815153 |
| Publication status | Published - 2011 |
| Event | 14. European Conference on Power Electronics and Applications - Birmingham, United Kingdom Duration: 1 Jan 2011 → … Conference number: 14 |
Conference
| Conference | 14. European Conference on Power Electronics and Applications |
|---|---|
| Number | 14 |
| City | Birmingham, United Kingdom |
| Period | 01/01/2011 → … |
Keywords
- Voltage Source Inverters (VSI)
- Multilevel converters
- Modulation strategy