This paper presents two realizations a 2-DOF PI fuzzy gain-scheduling controller for widerange speed control of combustion turbogenerators. The 2-DOF scheme allows independent tuning of the reference tracking and the disturbance rejection characteristics for the controlled system. Then, the fuzzy approach extends these characteristics all over the operating space of the combustion turbogenerato...

Motivation Fuel lean combustion is often employed to reduce pollutant emissions (CO, NOx,...) and increase gas turbine lifetime via reduced temperature. However, lean combustion is susceptible to thermoacoustic instabilities and lean blowout (LBO). Thermoacoustic instabilities are due to the coupling of heat release to acoustic oscillations, and lead to reduced combustion efficiency and increas...

However, these other means (e.g., speaker actuation) tend to be bulky, have limited operating range, or have other undesirable side effects. In comparison, liquid fuel modulation is compact, more practical, and can deliver the most energy with the least effort. based control approach recently found to be effective for suppressing combustion instabilities in gas turbines. A control law formulate...

The formation of PCDD/Fs (dioxins/furans) due to incomplete combustion in solid waste incinerators has caused tremendous public concern. Consequently, more stringent standards for combustion and emission control have been implemented in order to mitigate the formation of these substances. This change in regulations will inevitably result in shutting down many small-scale incinerators because of...

1. Background 2. Fundamentals of Biomass Combustion 2.1. Efficiency Constraints in Combustion 3. The Nature of Biomass Solid Fuels 3.1. Standard Tests in Fuels Analysis 3.2. Proximate and Ultimate Analysis 4. Fuel Preparation 5. Combustion Products from Biomass 5.1. Mineral Matter and Ash 5.2. Nitrogen Oxides 5.3. Sulfur Dioxide SO2 5.4. Chlorine – tube corrosion and dioxin (TCDD) formation 6. ...

However, these other means (e.g., speaker actuation) tend to be bulky, have limited operating range, or have other undesirable side effects. In comparison, liquid fuel modulation is compact, more practical, and can deliver the most energy with the least effort. based control approach recently found to be effective for suppressing combustion instabilities in gas turbines. A control law formulate...

The Homogeneous Charge Compression Ignition (HCCI) combustion concept lacks direct ignition timing control, instead the auto ignition depends on the operating condition. Since auto ignition of a homogeneous mixture is very sensitive to operating conditions, a fast combustion timing control is necessary for reliable operation. Hence, feedback is needed and the crank angle of 50% burnt (CA50) has...

The numerical modelling and process simulation for the fault diagnosis of rotary kiln incinerator were accomplished. In the numerical modelling, two models applied to the modelling within the kiln are the combustion chamber model including the mass and energy balance equations for two combustion chambers and 3D thermal model. The combustion chamber model predicts temperature within the kiln, fl...

In this paper are presented the results obtained by modelling and simulation of the combustion in a turbojet engine. The study of the mathematical model represented by the equations which described the combustion process was made by using the software FLUENT 6.1. The paper is focused on the establishment of the link between the control laws of the turbojet engine (whose main parameter is the fu...