Performance Analysis of Four-leg VSC Under Unbalanced Load Conditions For HPS Application

  1. Vechiu, Ionel 2
  2. Camblong, Haritza 2
  3. Curea, Octavian 2
  4. Dakyo, Brayima 1
  5. Tapia, Gerardo 3
  1. 1 Groupe de Recherche en Electrotechnique et Automatique du Havre
  2. 2 ESTIA Institute of Technology
  3. 3 Systems Engineering & Automation Department [UPV/EHU]
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Actas:
Power Electronics and Intelligent Control for Energy Conservation

Año de publicación: 2006

Páginas: 7

Congreso: Power Electronics and Intelligent Control for Energy Conservation

Tipo: Aportación congreso

GOOGLE SCHOLAR

Resumen

In this paper, the transient operation of four leg voltage source converter (VSC) under unbalanced load conditions is investigated. The inverter is particularly interesting for simultaneous supply of three phase and single phase load in transformerless Hybrid Power System (HPS) application. A control strategy for the VSC based on the decomposition of the supply voltages and currents into instantaneous positive, negative and homopolar sequence components is described. The three sequences are controlled using two different rotating reference frame systems, so that the disturbance of the output voltage due to the load unbalances is eliminated. Simulation results are presented to verify the transient operation of the VSC under unbalanced load conditions.