This page has only limited features, please log in for full access.
The control performance can be worsened by actuator rate limit, which can result in amplitude attenuation and phase delay in process control. In some extreme situation, actuator rate limit may bring about the system non-convergence. This paper focuses on the control difficulties and solutions of first-order plus time-delay (FOPTD) systems caused by rate limit. The effect of rate limit on stability regions of proportional-integral (PI) controller is analysed. Results show that small rate limit can reduce stability regions of PI parameters greatly. The negative correlation between the integral gain and the onset frequency, and the positive correlation between the proportional gain and the onset frequency are conducted. Moreover, the control performance of different PI tuning rules such as Skogestad internal model control, integral gain maximization, delay robustness-constrained optimization and Tyreus-Luyben tuning rules is evidently affected by rate limit. Simulation and experiment results verify that the PI controller tuned by Skogestad internal model control method is less sensitive to the rate limit uncertainty and is more suitable for processes (the normalized dead-time is from 0.03 to 1) which have severe actuator rate limit. Tyreus-Luyben tuning rule is another optional method. In addition, the reasons why SIMC is not sensitive to rate limit variation are analysed. These analytical results can offer a guideline for practical applications.
Zhenlong Wu; Jie Yuan; Donghai Li; Yali Xue; YangQuan Chen. The influence of rate limit on proportional–integral controller for first-order plus time-delay systems. ISA Transactions 2020, 105, 157 -173.
AMA StyleZhenlong Wu, Jie Yuan, Donghai Li, Yali Xue, YangQuan Chen. The influence of rate limit on proportional–integral controller for first-order plus time-delay systems. ISA Transactions. 2020; 105 ():157-173.
Chicago/Turabian StyleZhenlong Wu; Jie Yuan; Donghai Li; Yali Xue; YangQuan Chen. 2020. "The influence of rate limit on proportional–integral controller for first-order plus time-delay systems." ISA Transactions 105, no. : 157-173.
Supercritical circulating fluidized bed (CFB) is one of the prominent clean coal technologies owing to the advantages of high efficiency, fuel flexibility, and low cost of emission control. The fast and flexible load-tracking performance of the supercritical CFB boiler-turbine unit presents a promising prospect in facilitating the sustainability of the power systems. However, features such as large inertia, strong nonlinearity, and multivariable coupling make it a challenging task to harmonize the boiler’s slow dynamics with the turbine’s fast dynamics. To improve the operational flexibility of the supercritical CFB unit, a burning carbon based decentralized active disturbance rejection control is proposed. Since burning carbon in the furnace responds faster than throttle steam pressure when the fuel flow rate changes, it is utilized to compensate the dynamics of the corresponding loop. The parameters of the controllers are tuned by optimizing the weighted integrated absolute error index of each loop via genetic algorithm. Simulations of the proposed method on a 600 MW supercritical CFB unit verify the merits of load following and disturbance rejection in terms of less settling time and overshoot.
Fan Zhang; Yali Xue; Donghai Li; Zhenlong Wu; Ting He. On the Flexible Operation of Supercritical Circulating Fluidized Bed: Burning Carbon Based Decentralized Active Disturbance Rejection Control. Energies 2019, 12, 1132 .
AMA StyleFan Zhang, Yali Xue, Donghai Li, Zhenlong Wu, Ting He. On the Flexible Operation of Supercritical Circulating Fluidized Bed: Burning Carbon Based Decentralized Active Disturbance Rejection Control. Energies. 2019; 12 (6):1132.
Chicago/Turabian StyleFan Zhang; Yali Xue; Donghai Li; Zhenlong Wu; Ting He. 2019. "On the Flexible Operation of Supercritical Circulating Fluidized Bed: Burning Carbon Based Decentralized Active Disturbance Rejection Control." Energies 12, no. 6: 1132.
In order to optimize the economic objectives while regulating the ultra-supercritical boiler-turbine unit, an improved utopia tracking based multiobjective fuzzy model predictive control is proposed in this paper. This method uses a hierarchical structure, in which the quasi-infinite horizon fuzzy model predictive control is designed for the steady-state compromise point in the upper layer and the utopia tracking based multiobjective control is devised in the lower layer. To ensure the closed-loop stability, a constraint with respect to the optimal value function about the compromise point is enforced. The simulation results on a 1000MW USC boiler-turbine unit model verify the merits of the proposed strategy in achieving less fuel consumption and less throttling loss during the load regulation.
Fan Zhang; Yali Xue; Donghai Li; Jiong Shen; Xiao Wu; Zhenlong Wu; Ting He. Multiobjective Operation of Ultra-Supercritical Boiler-Turbine Unit. IFAC-PapersOnLine 2018, 51, 592 -597.
AMA StyleFan Zhang, Yali Xue, Donghai Li, Jiong Shen, Xiao Wu, Zhenlong Wu, Ting He. Multiobjective Operation of Ultra-Supercritical Boiler-Turbine Unit. IFAC-PapersOnLine. 2018; 51 (28):592-597.
Chicago/Turabian StyleFan Zhang; Yali Xue; Donghai Li; Jiong Shen; Xiao Wu; Zhenlong Wu; Ting He. 2018. "Multiobjective Operation of Ultra-Supercritical Boiler-Turbine Unit." IFAC-PapersOnLine 51, no. 28: 592-597.
Fan Zhang; Yali Xue; Nghai Li; Jiong Shen. Disturbance Rejection Model Predictive Control of Ultra-Supercritical Once-Through Boiler-Turbine Unit. 2018 37th Chinese Control Conference (CCC) 2018, 1 .
AMA StyleFan Zhang, Yali Xue, Nghai Li, Jiong Shen. Disturbance Rejection Model Predictive Control of Ultra-Supercritical Once-Through Boiler-Turbine Unit. 2018 37th Chinese Control Conference (CCC). 2018; ():1.
Chicago/Turabian StyleFan Zhang; Yali Xue; Nghai Li; Jiong Shen. 2018. "Disturbance Rejection Model Predictive Control of Ultra-Supercritical Once-Through Boiler-Turbine Unit." 2018 37th Chinese Control Conference (CCC) , no. : 1.
An increasing penetration of renewable energy may bring significant challenges to a power system due to its inherent intermittency. To achieve a sustainable future for renewable energy, a conventional power plant is required to be able to change its power output rapidly for a grid balance purpose. However, the rapid power change may result in the boiler operating in a dangerous manner. To this end, this paper aims to improve boiler control performance via a data-driven control strategy, namely Active Disturbance Rejection Control (ADRC). For practical implementation, a tuning method is developed for ADRC controller parameters to maximize its potential in controlling a boiler operating in different conditions. Based on a Monte Carlo simulation, a Probabilistic Robustness (PR) index is subsequently formulated to represent the controller’s sensitivity to the varying conditions. The stability region of the ADRC controller is depicted to provide the search space in which the optimal group of parameters is searched for based on the PR index. Illustrative simulations are performed to verify the efficacy of the proposed method. Finally, the proposed method is experimentally applied to a boiler’s secondary air control system successfully. The results of the field application show that the proposed ADRC based on PR can ensure the expected control performance even though it works in a wider range of operating conditions. The field application depicts a promising future for the ADRC controller as an alternative solution in the power industry to integrate more renewable energy into the power grid.
Zhenlong Wu; Ting He; Li Sun; Donghai Li; Yali Xue. The Facilitation of a Sustainable Power System: A Practice from Data-Driven Enhanced Boiler Control. Sustainability 2018, 10, 1112 .
AMA StyleZhenlong Wu, Ting He, Li Sun, Donghai Li, Yali Xue. The Facilitation of a Sustainable Power System: A Practice from Data-Driven Enhanced Boiler Control. Sustainability. 2018; 10 (4):1112.
Chicago/Turabian StyleZhenlong Wu; Ting He; Li Sun; Donghai Li; Yali Xue. 2018. "The Facilitation of a Sustainable Power System: A Practice from Data-Driven Enhanced Boiler Control." Sustainability 10, no. 4: 1112.
As one of promising clean and low-emission energy, wind power is being rapidly developed in China. However, it faces serious problem of wind curtailment, particularly in northeast China, where combined heat and power (CHP) units cover a large proportion of the district heat supply. Due to the inherent strong coupling between the power and the heat load, the operational flexibility of CHP units is severely restricted in winter to meet the heat supply demand, which imparts considerable stress on the wind power connection to the grid. To promote the integration of wind power and enhance the flexibility of CHP units, this paper presented a method of heat and power load dispatching by exploring the energy storage ability of electric heating boilers and district heating systems. The optimization results indicate that the proposed method can integrate additional wind power into the grid and reduce the coal consumption of CHP units over the optimized period. Furthermore, the thermal inertia of a district heating system is found to contribute more to the reduction of coal consumption, whereas the electric heating boilers contribute to lower wind curtailment.
Xianzheng Huang; Zhaofeng Xu; Yong Sun; Yali Xue; Zhe Wang; Zhijun Liu; Zhenyuan Li; Weidou Ni. Heat and power load dispatching considering energy storage of district heating system and electric boilers. Journal of Modern Power Systems and Clean Energy 2018, 6, 992 -1003.
AMA StyleXianzheng Huang, Zhaofeng Xu, Yong Sun, Yali Xue, Zhe Wang, Zhijun Liu, Zhenyuan Li, Weidou Ni. Heat and power load dispatching considering energy storage of district heating system and electric boilers. Journal of Modern Power Systems and Clean Energy. 2018; 6 (5):992-1003.
Chicago/Turabian StyleXianzheng Huang; Zhaofeng Xu; Yong Sun; Yali Xue; Zhe Wang; Zhijun Liu; Zhenyuan Li; Weidou Ni. 2018. "Heat and power load dispatching considering energy storage of district heating system and electric boilers." Journal of Modern Power Systems and Clean Energy 6, no. 5: 992-1003.
Li Sun; Qingsong Hua; Jiong Shen; Yali Xue; Donghai Li; Kwang Y. Lee. Multi-objective optimization for advanced superheater steam temperature control in a 300 MW power plant. Applied Energy 2017, 208, 592 -606.
AMA StyleLi Sun, Qingsong Hua, Jiong Shen, Yali Xue, Donghai Li, Kwang Y. Lee. Multi-objective optimization for advanced superheater steam temperature control in a 300 MW power plant. Applied Energy. 2017; 208 ():592-606.
Chicago/Turabian StyleLi Sun; Qingsong Hua; Jiong Shen; Yali Xue; Donghai Li; Kwang Y. Lee. 2017. "Multi-objective optimization for advanced superheater steam temperature control in a 300 MW power plant." Applied Energy 208, no. : 592-606.
In this paper, a dynamic model of a single effect LiBr-H 2 O absorption chiller has been developed to explore the transient characteristics for the purpose of control design. Dynamic performance of the absorption chiller is tested to determine an appropriate control strategy. Active disturbance rejection control (ADRC) is implemented to achieve cooling capacity control and disturbance rejection. Comparison with conventional PID control shows that ADRC delivers better performance when different disturbances occur.
Ting He; Donghai Li; Zhenlong Wu; Yali Xue; Yuxin Yang. Modeling and active disturbance rejection control of a single effect LiBr-H2O absorption chiller. 2017 11th Asian Control Conference (ASCC) 2017, 2726 -2731.
AMA StyleTing He, Donghai Li, Zhenlong Wu, Yali Xue, Yuxin Yang. Modeling and active disturbance rejection control of a single effect LiBr-H2O absorption chiller. 2017 11th Asian Control Conference (ASCC). 2017; ():2726-2731.
Chicago/Turabian StyleTing He; Donghai Li; Zhenlong Wu; Yali Xue; Yuxin Yang. 2017. "Modeling and active disturbance rejection control of a single effect LiBr-H2O absorption chiller." 2017 11th Asian Control Conference (ASCC) , no. : 2726-2731.
Yuqiong Zhang; Yali Xue; Nghai Li; Zhiqiang Gao; Haiming Niu; Huanpao Huang. Frequency response analysis on modified plant of extended state observer. 2017 17th International Conference on Control, Automation and Systems (ICCAS) 2017, 1237 -1241.
AMA StyleYuqiong Zhang, Yali Xue, Nghai Li, Zhiqiang Gao, Haiming Niu, Huanpao Huang. Frequency response analysis on modified plant of extended state observer. 2017 17th International Conference on Control, Automation and Systems (ICCAS). 2017; ():1237-1241.
Chicago/Turabian StyleYuqiong Zhang; Yali Xue; Nghai Li; Zhiqiang Gao; Haiming Niu; Huanpao Huang. 2017. "Frequency response analysis on modified plant of extended state observer." 2017 17th International Conference on Control, Automation and Systems (ICCAS) , no. : 1237-1241.
Zhenlong Wu; Wangying Shi; Nghai Li; Ting He; Yali Xue; Minfang Han; Song Zheng. The disturbance rejection design based on physical feedforward for solid oxide fuel cell. 2017 17th International Conference on Control, Automation and Systems (ICCAS) 2017, 1610 -1615.
AMA StyleZhenlong Wu, Wangying Shi, Nghai Li, Ting He, Yali Xue, Minfang Han, Song Zheng. The disturbance rejection design based on physical feedforward for solid oxide fuel cell. 2017 17th International Conference on Control, Automation and Systems (ICCAS). 2017; ():1610-1615.
Chicago/Turabian StyleZhenlong Wu; Wangying Shi; Nghai Li; Ting He; Yali Xue; Minfang Han; Song Zheng. 2017. "The disturbance rejection design based on physical feedforward for solid oxide fuel cell." 2017 17th International Conference on Control, Automation and Systems (ICCAS) , no. : 1610-1615.
Control of output voltage is critical for the power quality of solid oxide fuel cells (SOFCs), which is, however, challenging due to electrochemical nonlinearity, load disturbances, modelling uncertainties, and actuator constraints. Moreover, the fuel utilization rate should be limited within a safety range during the voltage regulation transient. The current research is usually appealing to model predictive control (MPC) by formulating the difficulties into a constrained optimization problem, but its huge computational complexity makes it formidable for real-time implementation in practice. To this end, this paper aims to develop a combined control structure, with basic function blocks, to fulfill the objectives with minor computation. Firstly, the disturbance, nonlinearity and uncertainties are lumped as a total disturbance, which is estimated and mitigated by active disturbance rejection controller (ADRC). Secondly, a feed-forward controller is introduced to improve the load disturbance rejection response. Finally, the constraints are satisfied by designing a cautious switching strategy. The simulation results show that the nominal performance of the proposed strategy is comparable to MPC. In the presence of parameter perturbation, the proposed strategy shows a better performance than MPC.
Li Sun; Qingsong Hua; Jiong Shen; Yali Xue; Donghai Li; Kwang Y. Lee. A Combined Voltage Control Strategy for Fuel Cell. Sustainability 2017, 9, 1517 .
AMA StyleLi Sun, Qingsong Hua, Jiong Shen, Yali Xue, Donghai Li, Kwang Y. Lee. A Combined Voltage Control Strategy for Fuel Cell. Sustainability. 2017; 9 (9):1517.
Chicago/Turabian StyleLi Sun; Qingsong Hua; Jiong Shen; Yali Xue; Donghai Li; Kwang Y. Lee. 2017. "A Combined Voltage Control Strategy for Fuel Cell." Sustainability 9, no. 9: 1517.
It is difficult to control the output voltage of the Solid Oxide Fuel Cells (SOFCs) because of the system nonlinearity, load disturbance and various constraints on the actuators and the fuel utilization rate. To overcome these difficulties, this paper proposed a multiple model predictive control scheme. The nonlinearity is addressed by using multiple models that are linearized at different operating conditions. The disturbance is accommodated by directly sending the load current information to the optimizer. And the constraints are naturally handled by formulating a constrained optimization problem. The simulation results show the effectiveness of the proposed strategy.
Lei Pan; Yali Xue; Li Sun; Nghai Li; Zhenlong Wu. Multiple Model Predictive Control for Solid Oxide Fuel Cells. Volume 1: 37th Computers and Information in Engineering Conference 2017, 1 .
AMA StyleLei Pan, Yali Xue, Li Sun, Nghai Li, Zhenlong Wu. Multiple Model Predictive Control for Solid Oxide Fuel Cells. Volume 1: 37th Computers and Information in Engineering Conference. 2017; ():1.
Chicago/Turabian StyleLei Pan; Yali Xue; Li Sun; Nghai Li; Zhenlong Wu. 2017. "Multiple Model Predictive Control for Solid Oxide Fuel Cells." Volume 1: 37th Computers and Information in Engineering Conference , no. : 1.
This paper proposes a linear active disturbance rejection control (LADRC) for gird-connected inverter with LCL filter to deal with parameters variation, internal coupling and external disturbance. Relative degree of plant is used to design LADRC and on the basis of relationship between LADRCs parameters and bandwidth, the parameters tuning are sum up in several guidable points. It is demonstrated that LADRC presents a good dynamic performances, high disturbance rejection and extremely robust to parameters variation in Matlab/Simulink.
Yuchang Ling; Junyi Dong; Hongbo Yang; Yali Xue; Jiang Zeng; Nghai Li. Linear Active Disturbance Rejection Control for Grid-Connected Inverter With LCL Filter. Volume 1: 37th Computers and Information in Engineering Conference 2017, 1 .
AMA StyleYuchang Ling, Junyi Dong, Hongbo Yang, Yali Xue, Jiang Zeng, Nghai Li. Linear Active Disturbance Rejection Control for Grid-Connected Inverter With LCL Filter. Volume 1: 37th Computers and Information in Engineering Conference. 2017; ():1.
Chicago/Turabian StyleYuchang Ling; Junyi Dong; Hongbo Yang; Yali Xue; Jiang Zeng; Nghai Li. 2017. "Linear Active Disturbance Rejection Control for Grid-Connected Inverter With LCL Filter." Volume 1: 37th Computers and Information in Engineering Conference , no. : 1.
Guiying Wu; Kwang Y. Lee; Li Sun; Yali Xue. Coordinated Fuzzy Logic Control Strategy for Hybrid PV Array with Fuel-Cell and Ultra-Capacitor in a Microgrid. IFAC-PapersOnLine 2017, 50, 5554 -5559.
AMA StyleGuiying Wu, Kwang Y. Lee, Li Sun, Yali Xue. Coordinated Fuzzy Logic Control Strategy for Hybrid PV Array with Fuel-Cell and Ultra-Capacitor in a Microgrid. IFAC-PapersOnLine. 2017; 50 (1):5554-5559.
Chicago/Turabian StyleGuiying Wu; Kwang Y. Lee; Li Sun; Yali Xue. 2017. "Coordinated Fuzzy Logic Control Strategy for Hybrid PV Array with Fuel-Cell and Ultra-Capacitor in a Microgrid." IFAC-PapersOnLine 50, no. 1: 5554-5559.
Ting He; Nghai Li; Zhenlong Wu; Yali Xue; Yuxin Yang. A modified luenberger observer for SOC estimation of lithium-ion battery. 2017 36th Chinese Control Conference (CCC) 2017, 924 -928.
AMA StyleTing He, Nghai Li, Zhenlong Wu, Yali Xue, Yuxin Yang. A modified luenberger observer for SOC estimation of lithium-ion battery. 2017 36th Chinese Control Conference (CCC). 2017; ():924-928.
Chicago/Turabian StyleTing He; Nghai Li; Zhenlong Wu; Yali Xue; Yuxin Yang. 2017. "A modified luenberger observer for SOC estimation of lithium-ion battery." 2017 36th Chinese Control Conference (CCC) , no. : 924-928.
Zhenlong Wu; Yali Xue; Lei Pan; Nghai Li; Ting He; Li Sun; Yuxin Yang. Active disturbance rejection control based simplified decoupling for two-input-two-output processes. 2017 36th Chinese Control Conference (CCC) 2017, 399 -404.
AMA StyleZhenlong Wu, Yali Xue, Lei Pan, Nghai Li, Ting He, Li Sun, Yuxin Yang. Active disturbance rejection control based simplified decoupling for two-input-two-output processes. 2017 36th Chinese Control Conference (CCC). 2017; ():399-404.
Chicago/Turabian StyleZhenlong Wu; Yali Xue; Lei Pan; Nghai Li; Ting He; Li Sun; Yuxin Yang. 2017. "Active disturbance rejection control based simplified decoupling for two-input-two-output processes." 2017 36th Chinese Control Conference (CCC) , no. : 399-404.
Yuqiong Zhang; Yali Xue; Hongbo Yang; Donghai Li; Li Sun; Haiming Niu; Huanpao Huang. Low-order active disturbance rejection control on furnace pressure of 1000MW power plant. 2017 36th Chinese Control Conference (CCC) 2017, 1 .
AMA StyleYuqiong Zhang, Yali Xue, Hongbo Yang, Donghai Li, Li Sun, Haiming Niu, Huanpao Huang. Low-order active disturbance rejection control on furnace pressure of 1000MW power plant. 2017 36th Chinese Control Conference (CCC). 2017; ():1.
Chicago/Turabian StyleYuqiong Zhang; Yali Xue; Hongbo Yang; Donghai Li; Li Sun; Haiming Niu; Huanpao Huang. 2017. "Low-order active disturbance rejection control on furnace pressure of 1000MW power plant." 2017 36th Chinese Control Conference (CCC) , no. : 1.
Li Sun; Donghai Li; Kwang Y. Lee; Yali Xue. Control-oriented modeling and analysis of direct energy balance in coal-fired boiler-turbine unit. Control Engineering Practice 2016, 55, 38 -55.
AMA StyleLi Sun, Donghai Li, Kwang Y. Lee, Yali Xue. Control-oriented modeling and analysis of direct energy balance in coal-fired boiler-turbine unit. Control Engineering Practice. 2016; 55 ():38-55.
Chicago/Turabian StyleLi Sun; Donghai Li; Kwang Y. Lee; Yali Xue. 2016. "Control-oriented modeling and analysis of direct energy balance in coal-fired boiler-turbine unit." Control Engineering Practice 55, no. : 38-55.
This paper derived a model for the superheated steam temperature based on the open-loop step response. A cascaded control structure based on disturbance observer (DOB) is proposed to accommodate the control difficulties. The simulation results show the great performance improvement compared with the conventional cascaded control structure. This paper is a preliminary research to the cascaded DOB control structure. Much improvement, theoretic analysis and experimental demonstration will be carried out in the future.
Li Sun; Nghai Li; Yong Sun; Yali Xue; Kwang Y. Lee. Disturbance rejection of superheated steam temperature in a utility boiler: A cascaded disturbance observer based control solution. 2016 16th International Conference on Control, Automation and Systems (ICCAS) 2016, 1278 -1281.
AMA StyleLi Sun, Nghai Li, Yong Sun, Yali Xue, Kwang Y. Lee. Disturbance rejection of superheated steam temperature in a utility boiler: A cascaded disturbance observer based control solution. 2016 16th International Conference on Control, Automation and Systems (ICCAS). 2016; ():1278-1281.
Chicago/Turabian StyleLi Sun; Nghai Li; Yong Sun; Yali Xue; Kwang Y. Lee. 2016. "Disturbance rejection of superheated steam temperature in a utility boiler: A cascaded disturbance observer based control solution." 2016 16th International Conference on Control, Automation and Systems (ICCAS) , no. : 1278-1281.
In this paper, an active disturbance rejection control (ADRC) with tracking differentiator (TD) solution is proposed and tested on a certain four operating condition model. The proposed system with a cascaded control scheme is constructed based on a linear Active disturbance rejection controller (LADRC) with parameters optimized under a modified fruit fly algorithm. The tracking performance could be improved by the tracking differentiator with flexible damping. The simulation results indicate that the proposed strategy could effectively balance rapid and stable responses.
Makeximu; Min Zhu; Yong Sun; Zhenlong Wu; Nghai Li; Yali Xue. Active disturbance rejection control for boiler superheated steam temperature. 2016 16th International Conference on Control, Automation and Systems (ICCAS) 2016, 135 -139.
AMA StyleMakeximu, Min Zhu, Yong Sun, Zhenlong Wu, Nghai Li, Yali Xue. Active disturbance rejection control for boiler superheated steam temperature. 2016 16th International Conference on Control, Automation and Systems (ICCAS). 2016; ():135-139.
Chicago/Turabian StyleMakeximu; Min Zhu; Yong Sun; Zhenlong Wu; Nghai Li; Yali Xue. 2016. "Active disturbance rejection control for boiler superheated steam temperature." 2016 16th International Conference on Control, Automation and Systems (ICCAS) , no. : 135-139.