Mitigating Zero Sequence Effects in Dynamic Voltage Restorers

  title={Mitigating Zero Sequence Effects in Dynamic Voltage Restorers},
  author={D. Mahinda Vilathgamuwa and H. M. I. G. A. Wijekoon},
  journal={2007 IEEE Power Electronics Specialists Conference},
This paper presents an in-depth analysis of the effects of zero sequence components on series custom power devices in particularly on the dynamic voltage restorer (DVR). It is shown that the conventional three-wire DVR could not properly compensate for voltage sags containing a zero sequence component due to the lack of zero sequence current circulation path within the restorer. It is proposed that a four-wire DVR can mitigate unbalanced voltage sags with zero sequence component effectively as… CONTINUE READING