A simplified model for dynamic behavior of permanent magnet synchronous generator for direct drive wind turbines

2011 ◽  
Author(s):  
F. M. Gonzalez-Longatt ◽  
P. Wall ◽  
V. Terzija
Keyword(s):  
Permanent Magnet ◽  
Dynamic Behavior ◽  
Wind Turbines ◽  
Synchronous Generator ◽  
Simplified Model ◽  
Direct Drive ◽  
Permanent Magnet Synchronous Generator

scholarly journals Multimodel Modeling and Predictive Control for Direct-Drive Wind Turbine with Permanent Magnet Synchronous Generator

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Lei Wang ◽  
Tao Shen ◽  
Chen Chen
Keyword(s):  
Nonlinear System ◽  
Wind Turbine ◽  
Permanent Magnet ◽  
Predictive Control ◽  
Wind Turbines ◽  
Linear Models ◽  
Synchronous Generator ◽  
Optimal Operation ◽  
Direct Drive ◽  
Permanent Magnet Synchronous Generator

The safety and reliability of the wind turbines wholly depend on the completeness and reliability of the control system which is an important problem for the validity of the wind energy conversion systems (WECSs). A method based on multimodel modeling and predictive control is proposed for the optimal operation of direct-drive wind turbine with permanent magnet synchronous generator in this paper. In this strategy, wind turbine with direct-drive permanent magnet synchronous generator is modeled and a backpropagation artificial neural network is designed to estimate the wind speed loaded into the turbine model in real time through the estimated turbine shaft speed and mechanical power. The nonlinear wind turbine system is presented by multiple linear models. The desired trajectory of the nonlinear system is decomposed to be suitable for the reference trajectory of multiple models that are presented by the linear models of the nonlinear system, which simplifies the nonlinear optimization problems and decreases the calculation difficulty. Then a multivariable control strategy based on model predictive control techniques for the control of variable-speed variable-pitch wind turbines is proposed. Finally, simulation results are given to illustrate the effectiveness of the proposed strategy, and the conclusion that multiple model predictive controller (MMPC) has better control performance than the PI control method is obtained.

scholarly journals Design and Comparison of grid connected Permanent Magnet Synchronous Generator Non-salient Pole and Salient Pole Rotor Wind Turbine

2021 ◽  
Vol 20 (2) ◽  
pp. 40-46
Author(s):  
S.M. Mehedi Hasan ◽  
Abu Hena Md. Shatil
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Synchronous Generator ◽  
Direct Drive ◽  
Permanent Magnet Synchronous Generator ◽  
Wind Energy Conversion ◽  
Simulink Simulation ◽  
Salient Pole ◽  
Doubly Fed ◽  
The Mathematical Model

Variable speed wind turbines are widely used wind energy conversion system (WECS). Among them doubly fed induction generator (DFIG) and permanent magnet synchronous generator (PMSG) are mostly used. PMSG based wind turbines are getting more popular in recent times because of their several advantages over other types. Direct drive capability and low speed operation are some of it’s significant advantage over other type. This paper describes two rotor types of grid connected PMSG, non-salient pole or round pole rotor and salient pole rotor and shows a comparative study between them. The mathematical model was designed and simulated using Matlab/Simulink. Simulation results have been shown to analyze their performances.

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