Virtual flux direct power control of diode clamped 3-level vsi based dstatcom

Abstract EN

This paper presents the performance evaluation and comparisons of voltage oriented control (VOC) and virtual flux direct power control (VF-DPC) strategies for diode clamped 3-Level voltage source inverter (VSI) based DSTATCOM.

The theoretical background is described and the merits and demerits of each scheme are studied through simulations.

Simulation studies are carried using MATLAB / Simulink.

Performance parameters such as Algorithm complexity, steady state and dynamic performances, total harmonic distortion (THD), etc.

are compared with both control strategies.

Effect of unbalanced power source voltages and distorted voltages are also studied and compared through simulations.

The simulation results shows that virtual flux direct power control is a viable alternative to voltage oriented control (VOC) technique which is based on d-q theory for VSI based DSTATCOM.