Control of compression system with independently actuated inlet guide and/or stator vanes

摘要

A compression system (10) includes a compressor (300) with independently adjustable inlet guide vanes (IGV (312)) and variable stator vanes (VSV (314)). IGV and VSV control units (152, 162) produce respective IGV/VSV reference commands (130, 140) responsive to respective first and second inputs (170, 172) that may be responsive to properties of the system (10). The second input (172) may be provided by a model of the compressor (300) or of the compression system (10) responsive to measured properties. The second input (172) may be an estimate of a property not directly observable, such as stall margin or efficiency.