ETD

• Home

View Document

Title

FAST DYNAMICS ANALYSIS AND ACTIVE CONTROL OF SPIKE-TYPE STALL INCEPTION IN A ONE STAGE AXIAL COMPRESSOR SYSTEM

Organization

Department: Measurement & Control Engineering

University: Idaho State University College: Science & Engineering Department: Measurement & Control Engineering 32

Document Attachments

Resource	Length	Width	Thickness
Paper	0	0	0
Paper	0	0	0
Paper	0	0	0

Specimen Elements

City

Pocatello

Coverage

Unknown to Unknown

Creator

Nirmeet Adhvaryu

Publisher

Idaho State University

Type

Thesis

Is Complete

No

Date Published

1/31/2018

Archive

digital

City: Pocatello

Degree

Master

Document Attachments

Abstracts

The research presented in this thesis details the system identification, modelling and control of the fast dynamics of a one stage axial compressor system. A control strategy to delay the onset of rotating stall is proposed. The system identification is focused on the relationship between the compressor flow coefficient and pressure rise coefficient as well as the compressor dynamics in and around the rotor blade passages. Transfer function and state-space models are developed to model the compressor fast dynamics for different flow coefficients. An overall model incorporating a variable flow coefficient is proposed. The derivation of this proposed overall model employs a map of identified eigenvalues corresponding to different flow coefficients. An active control strategy is proposed to delay the onset of rotating stall using a Linear Quadratic Gaussian controller and air injection into the blade passage. Simulation results based on the proposed overall model and dynamic controller indicate that the compressor characteristics within a blade passage can be controlled to the extent that problematic regions can be stabilized. Future work includes the testing of the proposed system on a one stage axial compressor system.