Analysis of the Boundaries to Compensate Voltage Sag Events Using a Single Phase Multi-Level Rectifier.

C. Núñez, J. Lira, N. Visairo, R. Echavarría
European Power Electronics and Drives Journal, Volume 20, N. 4. 12 Marzo 2011. ISSN 0939-8368. pp. 5-11. Factor de impacto: 0.208., 2011.


In this paper, it is established analytically the operation boundaries of the Single Phase Multi-Level Rectifier with voltage sag ride through capability (SPMLR with extended function). The analysis is based on its mathematical model and the switches power losses equations. These limits have been defined in terms of duty cycle, maximum current and power losses of the switches when voltage sag occurs. This information is very useful for converter design and for control purposes since safe operation and boundaries to compensate voltage sag are analytically known. To validate this analysis, simulation and experimental results are shown in a 1 kVA prototype.