| Abstract |
This paper presents a series of extremely high-power servo drives for application on high-voltage
circuit breakers. With a peak shaft power ranging from 15 to 500 kW and acceleration around 50g,
these drives are able to successfully replace the traditional circuit-breaker operating mechanisms. The
very special features and performance of the new drives provide a reliable and cost-effective solution,
with built-in diagnostic features. In contrast to traditional servo drives, the breaker drives are
designed for extreme peak power and short duty operation. Using a special motor design, the required
high peak power and energy can be delivered to the load in a cost effective way. The control system
of the drive ensures precision control over the motion curve of the breaker contacts. It allows
advanced monitoring of the breaker’s performance over time, providing detailed information on each
breaker operation. The servo drive thus not only replaces the traditional mechanical operating
mechanisms, but also eliminates the need for additional measurement equipment. |
