Control Strategies for VSC Based HVDC During Grid Faults: A Comparative Study of Selection Criteria of Currents Reference

摘要

This paper examines the different current generation schemes for controlling the positive and negative sequence currents of a high voltage direct current (HVDC) of a voltage source converter (VSC) under unbalanced network voltage conditions. A comparison of the reference current generation schemes for a network-connected adapter is displayed during normal operation and the unbalanced network error status. This study may provide a performance evaluation of the various techniques of generating reference current and can help to choose appropriate control during large network errors. A simulation study based on MATLAB / SIMULINK was conducted to evaluate the performance of current generation schemes.