Soft Starter System

Variable speed drive system for Downstream industries

Overview

For industrial applications where the production processes require very high-power equipment–typically like PTA, petrochemical, air separation or carbon capture, starting the machine directly on line or with a classic starter (auto transformer, variable voltage drive, etc.) could result in serious damages to the whole installation. This is where a variable speed drive is needed, to allow the start with an inrush current not exceeding the nominal motor current.

Soft Starter system

Electrification offers a soft starter variable speed drive system based on a combination of Voltage Source Inverter (VSI) or Load Commuted Inverter (LCI) and an electrical motor

FEATURES

Synchronous or induction technology
50 or 60 Hz according to the grid frequency
Capability to start several motors with a single soft starter

POWER CAPACITY

Up to 60 MW
Up to and 11 kV output motor voltage

AVAILABLE TOPOLOGIES

LCI + synchronous motor
DFE VSI + either sync or induction motor

We propose the complete system engineering including grid harmonics study and mechanical shaft analysis

Benefits

Smooth starting of the compressor
No inrush current on the grid
No mechanical stress on the motor
Full flexibility available in terms of power demand
Very fast starting and high operating reliability and availability: starting time <1 min