Dynamic performance and control strategy modification for coal-fired power unit under coal quality variation

Energy ◽  
2021 ◽  
Vol 223 ◽  
pp. 120077
Author(s):  
Junjie Yin ◽  
Ming Liu ◽  
Yongliang Zhao ◽  
Chaoyang Wang ◽  
Junjie Yan
Keyword(s):  
Power Unit ◽  
Control Strategy ◽  
Dynamic Performance ◽  
Coal Quality ◽  
And Control ◽  
Quality Variation

Dynamic and Control Modeling and Simulation of High Speed Precision Positioning XY Table

2011 ◽  
Vol 467-469 ◽  
pp. 978-983
Author(s):  
Zhi Peng Ma ◽  
Xing Yu Zhao ◽  
Fu Jun Wang ◽  
Da Wei Zhang
Keyword(s):  
Control Strategy ◽  
High Speed ◽  
Closed Loop ◽  
Dynamic Performance ◽  
Matching Law ◽  
Closed Loop Control ◽  
Precision Positioning ◽  
Loop Control ◽  
Decoupling Mechanism ◽  
And Control

To study the dynamic performance and control strategy of a kind of high speed precision positioning XY table with a new kind of decoupling mechanism, the electromechanical co-simulation model with three closed-loop control system using proportional–integral–derivative controller (PID controller) is constructed. By use of finite element analysis (FEA) and co-simulation method, the preloaded spring as the key component in the decoupling mechanism is optimized. The matching law of the spring stiffness and preload is presented. The decoupling mechanism influence on the dynamic performance of the XY table during the movement is fully discussed. Based on the electromechanical model, a three closed-loop control scheme with disturbance observer and feed-forward controller is proposed. Co-simulation results demonstrate the validity of the control strategy.

Small-Signal Equivalent Circuit Modeling and Controller Design of DC/DC Converter Based on Matlab

2014 ◽  
Vol 1070-1072 ◽  
pp. 1586-1591
Author(s):  
Xiao Long Xiao ◽  
Xiao Jun Lu ◽  
Jian Wei Yi ◽  
Xiao Hua Ding
Keyword(s):  
Mathematical Model ◽  
Control Strategy ◽  
Model Building ◽  
Controller Design ◽  
Dynamic Performance ◽  
Feedback System ◽  
Small Signal ◽  
Loop Feedback ◽  
And Control ◽  
The Mathematical Model

The model-building of DC/DC converter is the key to design the control of system. It is important to study DC/DC converter stability and dynamic performance. A small-signal model of buck/boost circuit was built by average state-space. By analyzing the transfer function of buck/boost circuit, a voltage closed-loop feedback system was designed. Building system of simulation circuit in the Matlab, the result of simulation shows the system has a good static and dynamic performance. It verifies the rationality of the mathematical model and control strategy. It verifies the rationality of the mathematical model and control strategy.

scholarly journals Review of dynamic performance and control strategy of supercritical CO2 Brayton cycle

Energy and AI ◽  
2021 ◽  
pp. 100078
Author(s):  
Xuan Wang ◽  
Rui Wang ◽  
Xingyan Bian ◽  
Jinwen Cai ◽  
Hua Tian ◽  
...  
Keyword(s):  
Control Strategy ◽  
Supercritical Co2 ◽  
Dynamic Performance ◽  
Brayton Cycle ◽  
And Control

scholarly journals Operation Mode Analysis, Parameter Matching and Control Strategy Research for a Novel Range-Extended Electric Vehicle

2014 ◽  
Vol 8 (1) ◽  
pp. 809-819
Author(s):  
Jianjun Hu ◽  
Guoqiang Zu ◽  
Ming Xie ◽  
Jia Chen
Keyword(s):  
Electric Vehicle ◽  
Control Strategy ◽  
Power Transmission ◽  
Dynamic Performance ◽  
Operation Mode ◽  
Mode Analysis ◽  
Transmission Scheme ◽  
Vehicle Operation ◽  
Parameter Matching ◽  
And Control

In order to improve the dynamic performance and endurance mileage of vehicle, operation mode and parameter matching were analyzed and designed on a novel power transmission scheme of range-extended electric vehicle (R-EEV), and the following control strategy of the engine optimization curve was proposed. The simulation was carried out on the Matlab/Simulink software platform and the results showed that the matching parameters and the control strategy of engine were both reasonable, the dynamic performance improved and the vehicle could be operated efficiently.

scholarly journals Advanced optimal by PSO-PI for DC motor

2019 ◽  
Vol 16 (1) ◽  
pp. 165 ◽  
Author(s):  
Salam Waley Jeaeb ◽  
Abbas Zghair Salman ◽  
Qusay A. Jawad ◽  
Haider Shareef
Keyword(s):  
Fuzzy Logic ◽  
Control Strategy ◽  
Fuzzy Logic Controller ◽  
System Simulation ◽  
Dynamic Performance ◽  
Dc Motor ◽  
Drive System ◽  
System Control ◽  
And Control ◽  
Day By Day

<p>Interest in the drive system which used in many applications is increasing day by day. So, many researchers have focused on the analyses, design and control of these systems. In this study, Optimal for Dc motor in drive system control strategy has been proposed for PSO-PI and fuzzy logic controller (FLC) based Dc motor in drive system. In order to test dynamic performance of PSO-PI based drive System, simulation study was carried out by MATLAB/Simulink. The results obtained from the PSO-PI based drive system are not only superior in the rise time, settling time and overshoot but can prevent from voltage and has improved power quality. </p>

Research on Modeling and Control Strategy for Two-Stage Photovoltaic Grid-Connected System

2014 ◽  
Vol 1008-1009 ◽  
pp. 16-21
Author(s):  
Xia Dong ◽  
Li Na Zhang ◽  
Yu Ying Fu ◽  
Cui Lian Ji
Keyword(s):  
Control Strategy ◽  
High Performance ◽  
Dynamic Performance ◽  
Mathematic Model ◽  
Two Stage ◽  
Lcl Filter ◽  
Modeling And Control ◽  
Point Tracking ◽  
Power Point ◽  
And Control

This paper has built the mathematic model of the single-phase two-stage photovoltaic(PV) grid-connected system. The model consists of a boost DC/DC converter and a DC/AC inverter with LCL filter. On the basis of the variable step perturbation and observation method(P&O), the boost converter changes the output voltage of the PV array by adjusting the duty cycle to realize the PV maximum power point tracking(MPPT). The inverter system restrains the voltage fluctuation effectively by using feed-forward of the grid voltage and current tracking control technology, which has the high performance in both sinusoidal reference tracking and disturbance rejection. LCL filter improves the dynamic performance and restrains the high harmonics efficiently. The simulation with Matlab soft confirms the effectiveness of the model and control strategy.

Software Design and Control Strategy for Polymerase Chain Reaction System

2011 ◽  
Vol 204-210 ◽  
pp. 1463-1466
Author(s):  
Jin He Wang ◽  
Hong Zhang ◽  
Nan Zhang
Keyword(s):  
Temperature Control ◽  
Software Design ◽  
Control Strategy ◽  
Dynamic Performance ◽  
Control Process ◽  
Reaction System ◽  
Temperature Control System ◽  
Polymerase Chain ◽  
Combined Feed ◽  
And Control

This paper describes a method for software design and proposes a control strategy for data processing in temperature control system. According to the proposed method, a combined feed-forward plus PID control is proposed, with additional temperature sensors, the major load disturbance attached to the system is measured. The experimental results demonstrate that the temperature control strategy significantly improves the dynamic performance on the control process.

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