Magnus Wind Turbine Emulator With MPPT by Cylinder Rotation Control

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Leonardo Candido Corrêa ◽  
João Manoel Lenz ◽  
Cláudia Garrastazu Ribeiro ◽  
Felix Alberto Farret
Keyword(s):  
Wind Turbine ◽  
Output Power ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Control Technique ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Turbine Model

An emulator for the nonconventional Magnus wind turbine was designed and developed in this study. A brief discussion is made of this special case of horizontal axis wind generator and of the main physics principles involving the Magnus phenomenon. A mathematical model was used to emulate the static behavior of the Magnus wind turbine and a detailed analysis is presented about its peculiar rotating cylinder characteristics. Based on the relationship between cylinder blade rotation and power coefficient, a hill climb search algorithm was developed to perform maximum power point tracking. The impact of the cylinder's rotation speed on the turbine net output power was evaluated. A controlled direct current motor was used to provide torque, based on the Magnus turbine model, and drive a permanent magnet synchronous generator (PMSG); the latter was controlled by a buck converter in order to extract the maximum generated power (MGP). Simulations of the Magnus wind turbine model and its maximum power point tracking (MPPT) control are also presented. A prototype of the proposed emulator was developed and operated by a user-friendly LabVIEW interface. Measurements of the power delivered to the load were acquired for different wind speeds; these results were analyzed and compared with simulated values showing a good behavior of the emulator with respect to the turbine model. The proposed control technique for maximizing the output power was validated by emulated results. The modeling and development of the Magnus turbine emulator also serve to encourage further studies on generation and control with this wind machine.

scholarly journals Application of the Feedback Linearization in Maximum Power Point Tracking Control for Hydraulic Wind Turbine

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1529
Author(s):  
Chao Ai ◽  
Wei Gao ◽  
Qinyu Hu ◽  
Yankang Zhang ◽  
Lijuan Chen ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Tracking Control ◽  
Feedback Linearization ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Control Law ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

Taking the hydraulic wind turbine as the research object, the method is studied to improve the utilization ratio of wind energy for hydraulic wind turbine, when the wind speed is lower than the rated wind speed. The hydraulic fixed displacement pump speed and generating power can be used as control output to realize the maximum power point tracking control. The characteristics of the maximum power point tracking control are analyzed for hydraulic wind turbine, and the hydraulic output power is taken as control output based on the comprehensive performance requirements. Because the hydraulic wind turbine is a strong multiplication nonlinear system, the system is globally linearized based the feedback linearization method, and the maximum power point tracking control law is obtained. The simulation and experiment results show that the system has good dynamic performance with the proposed control law. The control provides theoretical guidance for optimal power tracking control law application for hydraulic wind turbine.

Proposed Rotor Field - Oriented Maximum Power Point Tracking Polices for Permanent Magnet Synchronous Generator - Based Wind Turbine

2020 ◽  
pp. 0309524X2093513
Author(s):  
Nadia A Elsonbaty ◽  
Mohamed A Enany ◽  
Mahmoud Elymany
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Control Technique ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Load Angle

This article proposes three new maximum power point tracking control schemes for permanent magnet synchronous generators in variable-speed wind energy conversion systems. Unlike previously control methods based on traditional voltage source fed equivalent circuit, a current source fed equivalent circuit is proposed where an efficient maximum power point tracking–based load angle control can simply be achieved. The three new control strategies are based on concurrent load angle control–rotor field–oriented method at desired speeds. Each strategy has its own load angle methodology. The first strategy applies constant flux control technique. The second one is based on keeping constant 90° torque angle (zero d-axis current control) method. Finally, the third strategy presents an optimum maximum power point tracking at unity power factor with achieving the favorite linear relationship between the generator stator current and optimum torque. A unified detailed phasor diagram is provided from which the phasor diagram for any of the aforementioned control techniques is produced. Mathematical analysis and MATLAB Simulink model results are presented for each control pattern. Effective validation for the proposed mathematical models is approved.

Maximum Power Point Tracking Control of PMSG Wind Turbine Based on Action Dependent Heuristic Dynamic Programming

2012 ◽  
Vol 241-244 ◽  
pp. 1098-1104
Author(s):  
Shao Jian Song ◽  
Fei Long Zhang ◽  
Bi Lian Liao
Keyword(s):  
Dynamic Programming ◽  
Wind Turbine ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Stator Current ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Heuristic Dynamic Programming ◽  
Power Point

Wind turbine system with Permanent Magnet Synchronous Generator (PMSG) is a complex nonlinear system of multi-interference and strong coupling, so its accurate mathematical model is difficult to be built. Due to the randomness of the wind, traditional PID control is often hard to get satisfactory results in the Maximum Power Point Tracking (MPPT) control of the wind turbine. A new adaptive optimization control based on action dependent heuristic dynamic programming (ADHDP) is presented to control the stator current of PMSG. The stator current of the generator can adapt the change of the wind speed, so the MPPT of PMSG can be achieved. Simulation results in Matlab/Simulink show that the ADHDP controller can get better performances than PID controller.

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