Design of a fractional order PI controller for steam pressure in the steam drum of a bagasse fired boiler

Rivas-Pérez, Raul; Castillo-García, Fernando J.; Sotomayor-Moriano, Javier; Feliu-Batlle, Vicente

doi:10.3182/20140824-6-za-1003.00927

Cited by 9 publications

(13 citation statements)

References 18 publications

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“…Historically boiler control system‐modeling starts by considering three main inputs (a) fuel flow, (b) feed water flow, and (c) steam output. These inputs are mathematically related to three main outputs including, (a) boiler load, (b) steam pressure, and (c) drum level . Model equations are based on the mass, momentum, and energy balances.…”

Section: Modelmentioning

confidence: 99%

Comprehensive dynamic modeling, simulation, and validation for an industrial boiler incident investigation

Taimoor

Alghamdi

Farooqi

et al. 2019

Process Safety Progress

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Industrial boilers simulation can serve number of purposes like training, optimization, HAZOP studies, and incident investigation. Simulation including trip logics, interlockings, safety devices, start‐up and shutdown procedure is presented in this work. Simulation is directly accomplished in dynamic mode to benefit from the holdup approach to avoid anomalies because of recycling. The industrial DCS/PLC diagrams are replicated to imitate the boiler‐integrated behavior. Trip logics, start‐up and shutdown procedures are programmed using event scheduler. The inbuilt pressure relief module validates the simulated PSVs and rupture disc capacities. The model is then verified at three stages including ‘steady state’ achievement in dynamic mode, controller validation by start‐up and shut down procedures and finally by direct industrial data under deviant conditions. Where an unfortunate event is a concern, it also provides an opportunity to ponder and to evolve at various levels. Operational simulation of any such incident may help in getting a deep insight and thus to take accurate countermeasures. One such attempt is done in this work. A boiler accident has been reported. The complete response of the controllers and interlockings/trip system is imitated. The obtained results were compared with the chain of events that took place. © 2019 American Institute of Chemical Engineers Process Saf Prog: e12040 2019

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Section: Modelmentioning

confidence: 99%

Comprehensive dynamic modeling, simulation, and validation for an industrial boiler incident investigation

Taimoor

Alghamdi

Farooqi

et al. 2019

Process Safety Progress

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show abstract

“…The conditions of high pressure and temperature under which this boiler is operated also make it one of the most potentially dangerous pieces of equipment in this industry [9], and one of the most energy wasting units. Studies related to the design of effective controllers for bagasse fired boilers are, therefore, imperative [9], [10]. Bagasse-fired boilers are characterized by their complex dynamic behavior: time-varying parameters and various interacting processes that are usually controlled independently by conventional PID controllers [10].…”

Section: Introductionmentioning

confidence: 99%

“…Studies related to the design of effective controllers for bagasse fired boilers are, therefore, imperative [9], [10]. Bagasse-fired boilers are characterized by their complex dynamic behavior: time-varying parameters and various interacting processes that are usually controlled independently by conventional PID controllers [10]. If these boilers are to operate in a highly efficient manner, it is necessary to [11]- [13]: 1) guarantee that the amount of bagasse necessary to keep the steam pressure within the required limits is burned, independently of the load variations; and 2) maintain a correct air/bagasse ratio, which will enable a complete combustion within the design limits of the boiler.…”

Section: Introductionmentioning

confidence: 99%

Design of a PIα Controller for the Robust Control of the Steam Pressure in the Steam Drum of a Bagasse-Fired Boiler

2021

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This paper proposes the design of a PI α fractional robust controller with which to regulate the steam pressure in the steam drum of a bagasse-fired boiler. The dynamic behavior of this process was identified by means of experimentation. This identification procedure yielded an equivalent third order plus time delay model, and showed wide process static gain variations. We, therefore, propose a new method with which to design fractional-order robust controllers for this kind of processes. This method is based on the exact attainment of certain nominal time specifications while using one of the parameters of the controller to maximize the gain margin. The controller attained was shown to significantly outperform the robustness achieved by using PI or PID controllers, in the sense of reducing the Integral Absolute Error (IAE) and improving the steam pressure uniformity.

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“…TOPTD model ile ifade edilen Hammerstein-Wiener süreci [3]'te verilmiştir. Küspe ile ateşlenen bir kaynatıcı kazanındaki buhar basıncının modellenmesi de [4] örnek olarak verilebilir. Söz konusu * Yazışılan yazar/Corresponding author modeller için denetleyici tasarımı da oldukça ilgi gören konular arasındadır.…”

Section: Introductionunclassified

Analytical Design of PI Controllers for Third Order Plus Time Delay Systems

Senol¹

2020

Pamukkale J Eng Sci

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Bu yayında üçüncü derece ve zaman gecikmesi içeren sistem modellerinin kararlılığı, performansı ve dayanıklılığı için analitik bir oransal integral denetleyici tasarım yöntemi sunulmuştur. Denetleyici tasarımı, ideal bir sistemin frekans tepkilerini ele alarak denetlenmek istenen sistemin arzu edilen kazanç ve faz özelliklerini sağlaması üzerinde yoğunlaşmıştır. Sözü edilen özellikleri sağlayan oransal integral denetleyici parametrelerini veren denklemler adım adım oluşturulmuştur. Bu denklemler, söz konusu sistemler için genelleştirilmiş eşitlikleri içermektedir. Araştırmacı, bu yöntem sayesinde üçüncü derece zaman gecikmeli sistemler için istenen kazanç kesim frekansı ve faz payı değerlerini sağlayabilmektedir. Bu sayede, Bode grafiği nispeten ayarlanabilmekte ve sistemin performansı ve dayanıklılığı artırılabilmektedir. Aynı zamanda önerilen denklemlerle sistem kararlığı da elde edilebilmektedir. Yayında sunulan yöntemle elde edilen denklemler iki farklı model üzerinde uygulanmıştır. Tüm sonuçlar grafiksel olarak ve tablolarla gösterilmiştir. This paper presents an analytical method to design proportional integral controllers for the stability, performance and robustness of third order plus time delay system models. Controller design is focused on providing desired gain and phase specifications of the controlled system by considering the frequency responses of an ideal system. Equations that give the parameters of the proportional integral controller which satisfy the mentioned properties are built step by step. These include the generalized equations for such systems. With the help of this method, the researcher can provide desired gain crossover frequency and the phase margin for third order plus time delay systems. Therefore, the Bode diagram can be relatively tuned and system performance and robustness can be improved. At the same time, stability of the system can be achieved with the proposed equations. Proposed controller parameters in this paper are applied on two different models. All results are shown graphically and on tables.

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Design of a fractional order PI controller for steam pressure in the steam drum of a bagasse fired boiler

Cited by 9 publications

References 18 publications

Comprehensive dynamic modeling, simulation, and validation for an industrial boiler incident investigation

Comprehensive dynamic modeling, simulation, and validation for an industrial boiler incident investigation

Design of a PIα Controller for the Robust Control of the Steam Pressure in the Steam Drum of a Bagasse-Fired Boiler

Analytical Design of PI Controllers for Third Order Plus Time Delay Systems

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