Capacitor voltage balancing in a three-level-converter-based energy storage system
| Autor: | Iker Marino, Salvador Ceballos, Sendoa Burusteta, Josep Pou, Jose Angel Alzola, Vassilios G. Agelidis |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. TIEG - Terrassa Industrial Electronics Group, Universitat Politècnica de Catalunya. (TIEG) - Terrassa Industrial Electronics Group |
| Předmět: |
Forward converter
Multilevel converters Engineering Energy storage Ćuk converter INVERTER Energia--Emmagatzematge law.invention law Electronic engineering Convertidors de corrent elèctric Electrical and Electronic Engineering Inductance Modulation strategy Modulation (Electronics) business.industry Buck–boost converter Electrical engineering Converters Electric current converters Renewable energy systems Converter control Capacitor Boost converter Enginyeria electrònica::Electrònica de potència [Àrees temàtiques de la UPC] Inverter business Modulació (Electrònica) Inductància Negative impedance converter |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya Universitat Jaume I Scopus-Elsevier UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | This paper discusses a grid-connected energy storage system based on two three-level (3L) converters: a DC-DC one and a neutral-point-clamped inverter. When compared to a system using standard two-level converters, the main advantages of this system are: higher efficiency, smaller reactive components allowing for a system cost reduction and its capability to handle higher voltage and power. A modulation strategy for the DC-DC converter which includes the neutral-point voltage balance control is proposed. The capability of the DC-DC converter to cancel the inverter's neutral-point voltage oscillations is also analyzed. Results are presented to illustrate the extended operation area without imbalances. Design guidelines to size the DC-link capacitors are given for a practical implementation. Experimental results taken from a 10 kW 3L DC-DC converter prototype are provided to show the capability of this particular converter to keep neutral-point voltage balance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|