scholarly journals Fractional Order Pi Controller for the Highly Efficient Power Regulation of DFIG Based Wind Power Conversion System

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Fractional Order ◽  
Closed Loop ◽  
Dynamic Control ◽  
Pi Controller ◽  
Simple Method ◽  
Control Approach ◽  
Power Regulation ◽  
Fractional Order Pi Controller ◽  
Doubly Fed ◽  
Fopi Controller

In an electric power grid connected wind generation system, dynamic control strategy is essential to use the wind energy efficiently as well as for an energy optimization. The present study has focused on decoupled power regulation of doubly fed induction generator, operating in wind turbine, in accordance with the vector control approach by applying fractional order proportional integral (FOPI) controller. The FOPI controller is designed based on a simple method; up such that the response of closed loop process is similar to the response of a specified fractional model whose transfer function is Bode’s ideal function. In this tuning operation, the parameters of the proposed fractional controller are established analytically using the impulse closed-loop response of the controlled process. To show the superior action of the developed FOPI controller in comparison with standard PI controller in different function conditions, the study is validated through simulation using the software MATLAB/Simulink

scholarly journals The Study of Fractional Order Controller with SLAM in the Humanoid Robot

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Shuhuan Wen ◽  
Xiao Chen ◽  
Yongsheng Zhao ◽  
Ahmad B. Rad ◽  
Kamal Mohammed Othman ◽  
...  
Keyword(s):  
Transfer Function ◽  
Power Series ◽  
Fractional Order ◽  
Humanoid Robot ◽  
Power Series Expansion ◽  
Pi Controller ◽  
Fractional Order Pi Controller ◽  
Fractional Order Controller ◽  
Accumulated Error ◽  
Fopi Controller

We present a fractional order PI controller (FOPI) with SLAM method, and the proposed method is used in the simulation of navigation of NAO humanoid robot from Aldebaran. We can discretize the transfer function by the Al-Alaoui generating function and then get the FOPI controller by Power Series Expansion (PSE). FOPI can be used as a correction part to reduce the accumulated error of SLAM. In the FOPI controller, the parameters (Kp,Ki,  and  α) need to be tuned to obtain the best performance. Finally, we compare the results of position without controller and with PI controller, FOPI controller. The simulations show that the FOPI controller can reduce the error between the real position and estimated position. The proposed method is efficient and reliable for NAO navigation.

Design and High Accuracy Numerical Implementation of Fractional Order PI Controller for a PMSM Speed System

2021 ◽  
Author(s):  
Baokun Wang ◽  
Shaohua Wang ◽  
Ying Luo
Keyword(s):  
Fractional Order ◽  
Permanent Magnet Synchronous Motor ◽  
High Accuracy ◽  
System Control ◽  
Numerical Implementation ◽  
Implementation Method ◽  
Improved Performance ◽  
Fractional Order Pi Controller ◽  
Discretization Orders ◽  
Fopi Controller

Abstract In this paper, a systematic design and high accuracy implementation of fractional order proportional integral (FOPI) controller is proposed for a permanent magnet synchronous motor (PMSM) speed system, and the numerical implementation performance of the fractional order operator is evaluated with comprehensive investigation using different implementation methods. Three commonly used numerical implementation methods of fractional operators are investigated and compared in this paper. Futhermore, for the impulse response invariant method, the effects of different discretization orders on the system control performance are compared. The simulation results show that the high accuracy numerical implementation method of the designed high-order FOPI controller has improved performance over normal accuracy fractional order operation implementation.

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