Synthesis of stable and optimal controllers for a 2-shaft gas turbine

Tiwari, R.N.; Purkayastha, P.; Tiwari, Shraddhesh Kumar

doi:10.1049/piee.1977.0262

Cited by 6 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In another study, a controller has been designed based on the reverse Nyquist method. 7 Tiwari et al 8 have designed a stable and desirable controller for a two-axis gas turbine using formulation of the optimal linear regulators. Perez and Nwokah 9 have presented a model reference control for a gas turbine engine, where a simple control law guarantees that the outputs of the plant converge asymptotically to a pre-specified set of desired trajectories.…”

Section: Introductionmentioning

confidence: 99%

Control of a jet engine using predictor-based adaptive strategy in different flight modes

Ranjbar

Khosravi

Ahmadian

2023

Proceedings of the Institution of Mechanical Engineers, Part I:

View full text Add to dashboard Cite

In this article, a predictor-based model reference adaptive control method is proposed for a JetCat SPT5 turboshaft engine in full thrust, cruise, and idle modes. In the predictor-based model reference adaptive control method, in addition to the tracking error, the predictor error is also utilized in adaptive laws to achieve the desired control objectives, such as improving the tracking performance and control signals, and reducing the tracking error. The proposed method is implemented on a turboshaft engine system with actual dynamic values. First, three properly separated equilibrium points are selected on the nominal plant equilibrium manifold to linearize the plant model at the equilibrium points. Then, the predictor-based model reference adaptive control controller is designed and investigated for the three equilibrium points generating three operating modes of the engine, that is, full thrust, cruise, and idle. The stability of the control system is proved by the Lyapunov method. To evaluate the efficiency of the state predictor method in the simulation scenarios, the proposed method is compared with the classic model reference adaptive control method. The simulation results illustrate the superiority of the predictor-based model reference method due to the reduction of unwanted fluctuations in tracking performance, faster convergence of the tracking error to zero, and smoother control signals for all the equilibrium points.

show abstract

Section: Introductionmentioning

confidence: 99%

Control of a jet engine using predictor-based adaptive strategy in different flight modes

Ranjbar

Khosravi

Ahmadian

2023

Proceedings of the Institution of Mechanical Engineers, Part I:

View full text Add to dashboard Cite

show abstract

“…The research on the start-up process of gas turbines is relatively few at home and abroad, some scholars have been used the test method to study the start-up process of operating parameters and pollutants emissions [6][7][8]. For example, Kim [9] et al studied the start-up control process of GE9FA unit, and defined the different stages of the start-up process.…”

Section: Introductionmentioning

confidence: 99%

Research on the Numerical Method of Pollutant Emission during Gas Turbine Start-up

Wang,

Chen,

Fan

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

It was of great research value and significance to predict the pollutant emission from the gas turbine start-up process by numerical method, which could improve the operation and regulation of gas turbines. In the paper, the computational fluid dynamics(CFD)-chemical reaction network (CRN) method was used to study the pollutant emission of gas turbines. According to the control process of the start-up control module, the start-up process had been divided into 12 states, and the CFD numerical analysis was carried out. Based on the data of Damkohler number (Da), temperature and velocity obtained by CFD, the chemical reaction network model of each state point was established. The research showed that the design parameter value of the state point was the basis of compiling the calculation process and source code; The basic data and partition basis for the chemical reaction network could been provided by the results of CFD analysis, which was an important guarantee for accurate prediction of NOx; The method of CFD-CRN could accurately predict NOx emission of gas engine during start-up, and provided reasonable and reliable research means and mathematical methods.

show abstract

Robust excitation controller design for synchronous generators using output feedback

Papadopoulos

Bandekas

Smith

1993

Int Trans Elec Energy Syst

View full text Add to dashboard Cite

In this work an alternate systematic procedure is proposed for the control of high‐order multiple‐input multiple‐output (MIMO) linear time‐invariant open‐loop system models. The procedure forms the corresponding high‐order single‐input multiple‐output (SIMO) open‐loop model from which it obtains an adequate reduced‐order SIMO open‐loop model (all states of which are measurable and may be made to coincide with its output variables). Then an implementable controller based on the reduced‐order SIMO model, using the spectral pole‐placing algebraic control method with complete state‐feedback, is derived. The controller of the reduced‐order SIMO model is then used for controlling the original high‐order MIMO open‐loop system model. The proposed control approach was applied to a linearized 9th‐order MIMO open‐loop synchronous generator system model and yielded an implementable excitation controller, which was tested successfully in three more operating points of the over‐ and under‐excitation regions of the generator for proving its desired robustness. The four designed 9th‐order MIMO closed‐loop systems displayed remarkably improved dynamic stability characteristics.

show abstract

Synthesis of stable and optimal controllers for a 2-shaft gas turbine

Cited by 6 publications

References 0 publications

Control of a jet engine using predictor-based adaptive strategy in different flight modes

Control of a jet engine using predictor-based adaptive strategy in different flight modes

Research on the Numerical Method of Pollutant Emission during Gas Turbine Start-up

Robust excitation controller design for synchronous generators using output feedback

Contact Info

Product

Resources

About