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Active surge control for variable speed axial compressors.

Shu Lin1, Chunjie Yang1, Ping Wu1

  • 1State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, Zhejiang, China.

ISA Transactions
|February 18, 2014
PubMed
Summary
This summary is machine-generated.

This study introduces a fuzzy logic controller for active surge control in axial compressors, outperforming other methods. This approach effectively prevents surge without needing system equilibrium data.

Keywords:
BacksteppingFuzzy logic controllerSurge controlVariable speed compressors

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Area of Science:

  • Mechanical Engineering
  • Control Systems Engineering
  • Aerospace Engineering

Background:

  • Axial compressors are critical in many industries but susceptible to surge, an instability.
  • Active surge control is essential for efficient and stable compressor operation.
  • Existing control methods often require detailed system knowledge, limiting their applicability.

Purpose of the Study:

  • To develop and evaluate a novel fuzzy logic controller for active surge control in variable speed axial compressors.
  • To demonstrate the controller's effectiveness without prior knowledge of system equilibrium or the surge line.
  • To compare the fuzzy logic controller's performance against a backstepping controller.

Main Methods:

  • A variable speed axial compressor model was used for simulations.
  • A fuzzy logic controller was designed to adjust the throttle opening based on pressure rise and mass flow changes.
  • A proportional speed controller was implemented for speed regulation.
  • Numerical simulations were conducted to assess performance.

Main Results:

  • The fuzzy logic controller successfully suppressed surge across various operating points.
  • The proposed fuzzy logic controller demonstrated superior performance compared to a backstepping controller.
  • The control strategy effectively managed compressor stability without explicit surge line or equilibrium data.

Conclusions:

  • Fuzzy logic control offers a robust and effective solution for active surge control in axial compressors.
  • The developed controller is practical due to its independence from detailed system parameters.
  • This approach enhances compressor operational stability and efficiency.