Compressors are major pieces of capital equipment with long, effective lifespans. Unfortunately, control system obsolescence, plant reconfigurations and changes in process requirements can all drive the need for a control system retrofit over the lifetime of the compressor, and the multivariable, nonlinear system architectures required for compressor control can cause fear and uncertainty for the engineers responsible for executing the project.
However, by avoiding fundamental mistakes during the design phase, engineers can instead consider any retrofit as an opportunity to improve compressor operation and efficiency. This paper will explore major areas to make compressor control improvements.
