scholarly journals Advanced Control Strategies for Direct-Drive PMSG Wind Turbine Systems: Direct Predictive Torque Control Approaches

2017 ◽  
Vol 2 (3) ◽  
pp. 217-225 ◽  
Author(s):  
Zhenbin Zhang ◽  
Keyword(s):  
Wind Turbine ◽  
Control Strategies ◽  
Torque Control ◽  
Direct Drive ◽  
Advanced Control

A 2MW direct drive wind turbine; vector control and direct torque control techniques comparison

2014 ◽  
Vol 25 (2) ◽  
pp. 117-126 ◽  
Author(s):  
Mehdi Allagui ◽  
Othman B.k. Hasnaoui ◽  
Jamel Belhadj
Keyword(s):  
Power Control ◽  
Wind Turbine ◽  
Vector Control ◽  
Reactive Power ◽  
Low Voltage ◽  
Control Strategies ◽  
Direct Torque Control ◽  
Torque Control ◽  
Direct Drive ◽  
Control Techniques

This paper presents a comparative study on the most popular control strategies used to control high power, Direct Drive Wind Turbines. The studied wind turbine is equipped with a supervision scheme in order to fulfil Grid connection requirements (GCR). For the generator-side converter, performances of the Field Oriented Control (FOC) and Direct Torque Control (DTC) are compared. Concerning the grid-side converter, Voltage Oriented Control (VOC) and Direct Power Control (DPC) are examined. The comparison is based on various criteria mainly, steady-state and transient performances. In addition, performances are evaluated in terms of low voltage ride through capabilities (LVRT), power limitation and reactive power control. It has been shown that best power quality features are given by vector control techniques. On the other hand, direct control offers the better dynamic response and power cross-coupling is substantially lower. Furthermore, during fault, the wind turbine does not trip for both techniques. However, vector control is better since it gives low power oscillations

Using Extremum Seeking Control to Improve the Power Capture of Midsize Hydrostatic Wind Turbines

2021 ◽  
Author(s):  
Daniel Escobar-Naranjo ◽  
Biswaranjan Mohanty ◽  
Kim A. Stelson
Keyword(s):  
Adaptive Control ◽  
Wind Turbine ◽  
Wind Turbines ◽  
Control Strategies ◽  
Torque Control ◽  
Extremum Seeking ◽  
Extremum Seeking Control ◽  
Model Free ◽  
Point Tracking ◽  
Power Capture

Abstract Adaptive control strategies are commonly used for systems that change over time, such as wind turbines. Extremum Seeking Control (ESC) is a model-free real-time adaptive control strategy commonly used in conventional gearbox wind turbines for Maximum Power Point Tracking (MPPT). ESC optimizes the rotor power by constantly tuning the torque control gain (k) when operating below rated power. The same concept can be applied for hydrostatic wind turbines. This paper studies the use of ESC for a 60-kW hydrostatic wind turbine. First, a systematic approach to establish the ideal ESC is shown. Second, a comparison of the power capture performance of ESC versus the conventional torque control law (the kω2 law) is shown. The simulations include a timesharing power capture coefficient (Cp) to clearly show the advantages of using ESC. Studies under steady and realistic wind conditions show the main advantages of using ESC for a hydrostatic wind turbine.

A Survey on Control of Parallel Manipulator

2007 ◽  
Vol 339 ◽  
pp. 307-313 ◽  
Author(s):  
J.F. He ◽  
H.Z. Jiang ◽  
D.C. Cong ◽  
Zheng Mao Ye ◽  
Jun Wei Han
Keyword(s):  
Control Strategies ◽  
Parallel Manipulators ◽  
Physical Structure ◽  
Extensive Study ◽  
Torque Control ◽  
Serial Manipulators ◽  
Advanced Control ◽  
And Performance ◽  
Computed Torque ◽  
Structure Properties

Based on extensive study on literatures of control of parallel manipulators and serial manipulators, control strategies such as computed torque control, PD+ control, PD with feedforward compensation, nonlinear adaptive control are classified into two categories: model-based control and performance-based control. Besides, as advanced control strategies, robust control and passivity-based control for the parallel manipulators are also introduced. Comparative study in view of computation burden and tracking performance are performed. It turned out that the physical structure properties of parallel manipulators’ dynamics are similar with that of serial ones, and this constitutes a common foundation for the two kinds of manipulators to develop together that control design of parallel manipulators can start with ever established control methods of serial manipulators.

scholarly journals DSP-HIL Comparison between IM Drive Control Strategies

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 921
Author(s):  
Luis E. Ortega-García ◽  
Daniela Rodriguez-Sotelo ◽  
Jose C. Nuñez-Perez ◽  
Yuma Sandoval-Ibarra ◽  
Francisco J. Perez-Pinal
Keyword(s):  
Control Strategies ◽  
Dynamic Performance ◽  
Torque Control ◽  
Hardware In The Loop ◽  
Control Techniques ◽  
Drive Control ◽  
Traditional Structure ◽  
Three Phase ◽  
Advanced Control ◽  
Flux Response

Due to their high robustness and simple maintenance, induction motors (IM) are commonly applied in household appliances and industry. Recently, advanced control techniques are being applied to traditional controllers such as field-oriented control (FOC) and torque control (DTC). Dynamic performance improvement, hardware simplification and software resource reduction are some of the characteristics reported by these advanced techniques, where a comparison of the new proposal with a traditional structure is generally reported for its validation. However, an assessment between advanced techniques is usually missing. Therefore, we evaluated the traditional FOC and DTC with two additional advanced control modifications, fuzzy and predictive. The resulting six structures were numerically evaluated using MATLAB SIMULINK in a 5 HP four-pole three-phase IM and practically validated using hardware-in-the-loop (Typhoon HIL 402 and DSP TMS320F28035). Speed, torque, phase current and flux response are reported for the six controllers and practical insights are summarized.

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