Gas turbine has become increasingly popular in different areas of industry due to their lower greenhouse emission and higher efficiency compared to other types of engine such as diesel engines, especially when connected in a combined cycle setup.
The control of gas turbine system, particularly its exhaust temperature control, is of primary concern. In particular, the system’s transient response period should be as short as possible and the temporal peaks of main parameters such as turbine inlet temperature and rotational speed should not exceed certain reference values required for a safe and reliable operation].
However, this is the main problem of the gas t urbine; it suffers from unde irable transient response during start-up, load changes and shutdown as well as under abnormal conditions.