scholarly journals Variable Structure Sliding Mode Control and Direct Torque Control of Wind Power Generation System Based on the Pm Synchronous Generator

2015 ◽  
Vol 66 (3) ◽  
pp. 121-131 ◽  
Author(s):  
Youssef Errami ◽  
Mohammed Ouassaid ◽  
Mohamed Cherkaoui ◽  
Mohamed Maaroufi
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Variable Structure ◽  
Synchronous Generator ◽  
Torque Control ◽  
Electrical Network ◽  
Mode Control ◽  
Dc Bus ◽  
Grid Side

Abstract This paper presents a Variable Structure Sliding Mode Control (VS-SMC) scheme and Direct Torque Control (DTC) for Wind Farm (WF) based on the Permanent Magnet Synchronous Generator (PMSG). The WF consists of a 3 PMSGs which are connected to a common dc bus system with rectifier. The dc-bus is connected to the electrical network using only one inverter system, a grid-side filter as well as the transformer. The efficiency of the WF can be greatly improved using an appropriate control approach. So, the control strategy uses the technique of DTC to regulate the speeds of PMSGs for Maximum Power Point Tracking (MPPT) mode. Besides, by employing VS-SMC the grid-side inverter is controlled to inject the generated power into the electrical network, to regulate DC-link voltage and to achieve Unity Power Factor. The used control strategies provide an optimal control solution for WF systems based on the PMSG.

scholarly journals Improved Performance of DFIG-generators for Wind Turbines Variable-speed

2018 ◽  
Vol 9 (4) ◽  
pp. 1875
Author(s):  
Ihedrane Yasmine ◽  
El Bekkali Chakib ◽  
Bossoufi Badre
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
System Stability ◽  
Control Technique ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Mode Control ◽  
Dc Bus ◽  
Doubly Fed ◽  
Grid Side

<span lang="EN-US">The following article presents the control of the power generated by the Doubly Fed Induction Generator, integrated into the wind system, whose rotor is linked to the power converters (Rotor Side Convert (RSC) and Grid Side Converter (GSC)) interfaced by the DC-BUS and connected to the grid via a filter (Rf, Lf) in order to obtain an optimal power to the grid and to ensure system stability. The objective of this study is to understand and to make the comparison between Sliding mode Control technique and the Flux Oriented Control in order to control the Doubly Fed Induction Generator powers exchanged with the grid, it also aims at maintaining the DC-BUS voltage constant and a unit power factor at the grid connection point.The results of simulation show the performance of the Sliding mode Control in terms of monitoring, and robustness with regard to the parametric variations, compared to the Flux Oriented Control. The performance of the systems was tested and compared with the use of MATLAB/Simulink software.</span>

scholarly journals Sensorless Direct Torque Control of PMSM Based on Fuzzy Sliding Mode Control with Full Order Sliding Mode Observer

2021 ◽  
Vol 23 (5) ◽  
pp. 409-415
Author(s):  
Idriss Baba Arbi ◽  
Abdelkrim Allag
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Angular Speed ◽  
Sliding Mode Observer ◽  
Torque Control ◽  
Control Technique ◽  
Fuzzy Sliding Mode Control ◽  
Mode Control ◽  
Fuzzy Sliding Mode

This paper presents an implementation of Fuzzy Sliding Mode Control for Sensorless Direct Torque Control (DTC) of a Permanent Magnets Synchronous Machine as a combination between the known performances of direct torque control on the one hand and the robustness of sliding mode control on the other hand. The fuzzy controller is introduced to reduce the effect of chattering phenomenon which is the major disadvantage of sliding mode control technique. The proposed controller is used to replace the conventional PI angular speed controller that generates the electromagnetic reference torque for DTC, in order to improve the dynamic and the permanent behaviors of the angular speed control response as well the electromagnetic torque. The proposed control technique is implemented without using speed or position sensors, where a Full Order Sliding Mode Observer is used. It is shown that the proposed control technique has given improved simulation results with different speed ranges and different load values.

Application of Direct Torque Control to a Photovoltaic Pumping System with Sliding-mode Control Optimization

2015 ◽  
Vol 44 (2) ◽  
pp. 172-184 ◽  
Author(s):  
Abdelyazid Achour ◽  
Djamila Rekioua ◽  
Ahmed Mohammedi ◽  
Zahra Mokrani ◽  
Toufik Rekioua ◽  
...  
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Torque Control ◽  
Mode Control ◽  
Pumping System ◽  
Control Optimization

High-Order Terminal Sliding Mode Control for Brushless Doubly-Fed Machines

2014 ◽  
Vol 685 ◽  
pp. 384-388 ◽  
Author(s):  
Quan Kun Zhang ◽  
Yu Yu ◽  
Shuai Mei Lian ◽  
Hong Hu ◽  
Yu Jian Zhang
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
High Order ◽  
Torque Control ◽  
Switching Frequency ◽  
Terminal Sliding Mode Control ◽  
Terminal Sliding Mode ◽  
Mode Control

A novel sliding-mode variable structure(SMVS) control strategy is proposed to reduce the ripples of flux and torque of brushless double-fed machines(BDFM) based on direct torque control system. In order to ensure the constant switching frequency for the inverter, two hysteresis regulators in the conventional direct torque control system system are substituted by the SMVS controllers of flux and torque，nonsingular terminal sliding modes are designed to make the motor power reach the given values in a finite period of time. and the high-order sliding mode method is adopted to estimate the chattering phenomenon of the conventional sliding mode. Meanwhile, to obtain the parameters of High-order terminal sliding mode control, a method of fuzzy neural network is presented. The simulation results show that the nonsingular high-order terminal sliding-mode control can improve the robustness and dynamic response of the system.

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