Abstract
This paper studies an energy storage system based on a three-level DC-DC converter and a grid-connected neutral-point-clamped inverter. The main advantages of this multilevel power conversion system are highlighted and the neutral-point voltage oscillations are analyzed. A modulation algorithm for the DC-DC converter which includes the neutral-point voltage balance control is used to improve the voltage balancing capabilities of the inverter. Some figures are presented to show the extended operating areas without neutral-point voltage oscillations thanks to the contribution of the DC-DC converter to the voltage balance. Finally, some guidelines to size the DC-link capacitors are given for a practical application.
| Original language | English |
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| Title of host publication | Proceedings of the 2011 14th European Conference on Power Electronics and Applications, EPE 2011 |
| Publication status | Published - 2011 |
| Event | 2011 14th European Conference on Power Electronics and Applications, EPE 2011 - Birmingham, United Kingdom Duration: 30 Aug 2011 → 1 Sept 2011 |
Publication series
| Name | Proceedings of the 2011 14th European Conference on Power Electronics and Applications, EPE 2011 |
|---|
Conference
| Conference | 2011 14th European Conference on Power Electronics and Applications, EPE 2011 |
|---|---|
| Country/Territory | United Kingdom |
| City | Birmingham |
| Period | 30/08/11 → 1/09/11 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Converter control
- Energy storage
- Modulation strategy
- Multilevel converters
- Renewable energy systems
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