Susceptibility of Adjustable Speed Drives in relation to their environment

1
Susceptibility of Adjustable Speed Drives in
relation to their environment
S. Galceran1, A. Sudrià1, M. Teixidó2, X.
Corbella3, J. Sánchez3
1 Department of Electrical Engineering, ETSEIB,
UPC 2 Center of Technological Innovation in
Static Converters and Drives (CITCEA-UPC) 3
FECSA-ENDESA Power Management and Quality
2

• Our experience shows that a flying restart can be
  done when voltage dip or interruption duration is
  up to 1 second

Using ride-through functions of the frequency
converter.
Undervoltage relay and a timer may be necessary.
3
In longer voltage dips or interruptions, the
solution used most often is adding external
batteries connected to the DC link.
In certain applications the converter can be feed
by a small battery using a boost converter
allowing safety manoeuvres.