ABB MEGADRIVE LCI transmission chain vibration damping function

Problem background: Hazards and causes of transmission system oscillation

The operation of the transmission chain will generate system oscillation (torsional vibration). If not suppressed, it will cause premature wear of mechanical components, increase maintenance costs, and in severe cases, directly lead to the failure of the transmission chain.

The main source of oscillation

The critical speed operating point that cannot be avoided;

Fluctuations in process conditions;

Sub synchronous torsional interactions occur with other devices.

Controlling such oscillations is crucial for the stability, service life, and operational performance of the transmission system.

MEGADRIVE LCI Vibration Damping Function Description

Hardware platform conditions: Only applicable to MEGADRIVE LCI devices on PEC2/PEC3 control platforms, which are paid additional options and not standard.

Working principle: capable of detecting harmful mechanical oscillation components; Filter the oscillation components in the energy transfer link between electrical and mechanical systems to actively suppress harmful system oscillations.

Typical application scenarios of high-frequency torsional vibration

All transmission systems have the possibility of oscillation, and the problem is more prominent under low-frequency torque fluctuation conditions:

Ship propulsion system;

Cement mill;

Compressor drive system.

ABB can provide risk assessment of transmission chain oscillation and offer customized solutions to reduce the negative impact of torsional vibration.

The four core benefits brought by functionality

Improve the reliability of the transmission system

Reduce the risk of equipment failure;

Reduce unplanned downtime.

Extend the service life of equipment

The overall lifespan of mechanical components has been improved;

Reduce wear and tear on critical transmission components.

Reduce maintenance costs

The frequency of component replacement has decreased;

Extend the planned maintenance cycle;

Reduce annual maintenance expenses.

Improve operational performance

Expandable operating range of equipment;

Suppress oscillation losses and reduce energy waste.