Multiple drives are connected to one DC link.
In case of a power failure and thus reduction in speed to < 10% the machines stop uncontrollably, leading to yarn breaking and -clewing. Restarting the machines can take hours, thus high downtime costs occur. Especially in production countries with instable grid power, power failures occur multiple times a day, so there this is an enormous problem.
Securing controlled stops in case of power failures. This avoids long downtimes, high set-up and downtime costs and protects the system and materials.
Supplying the drives with the energy that is necessary for a controlled stop.
The textile machine comes to a controlled stop
Voltage dips are compensated, the machines runs smoothly
Short-term mains interruptions are bridged