Encoderless model predictive control of back-to-back converter direct-drive permanent-magnet synchronous generator wind turbine systems

2013 ◽  
Author(s):  
Zhenbin Zhang ◽  
Christoph Hackl ◽  
Fengxiang Wang ◽  
Zhe Chen ◽  
Ralph Kennel
Keyword(s):  
Model Predictive Control ◽  
Wind Turbine ◽  
Permanent Magnet ◽  
Predictive Control ◽  
Synchronous Generator ◽  
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.

The Research on Direct Drive Permanent Magnet Synchronous Wind Generator Vector Control

2012 ◽  
Vol 512-515 ◽  
pp. 798-802
Author(s):  
Jia Ying Zhang ◽  
Li Ping Zhang
Keyword(s):  
Wind Turbine ◽  
Vector Control ◽  
Permanent Magnet ◽  
Control Strategy ◽  
High Efficiency ◽  
Synchronous Generator ◽  
Direct Drive ◽  
Operating Characteristics ◽  
Permanent Magnet Synchronous Generator ◽  
Wind Generator

Direct drive permanent magnet synchronous generator have the advantages of direct drive, simple structure, high efficiency and so on, in which make it become one of mainstream models within MW wind turbine presently. Making the direct drive permanent magnet wind power generation system as the main research object, based on the principle of the operating characteristics of direct drive permanent magnet synchronous wind generator ( DDPMG ), establish mathematical model of the whole system including wind turbine, direct drive permanent magnet synchronous generator and machine side converter, applying the method of stator flux orientation to make the study of vector control strategy, to build the simulation model of direct drive permanent magnet synchronous generator system with Matlab to simulate the operation of generator when wind speed changes by step, the results validate the reasonableness of the model and the correctness and feasibility of the control strategy.

Direct Drive Permanent Magnet Synchronous Wind Generator Maximum Power Tracking Control

2013 ◽  
Vol 724-725 ◽  
pp. 459-462
Author(s):  
Jia Ying Zhang ◽  
Li Ping Zhang ◽  
Gui Ling Xiao
Keyword(s):  
Wind Turbine ◽  
Permanent Magnet ◽  
Control Strategy ◽  
High Efficiency ◽  
Synchronous Generator ◽  
Direct Drive ◽  
Operating Characteristics ◽  
Permanent Magnet Synchronous Generator ◽  
Generator System ◽  
Wind Generator

Direct drive permanent magnet synchronous generator have the advantages of direct drive, simple structure, high efficiency and so on, in which make it become one of mainstream models within MW wind turbine presently. Making the direct drive permanent magnet wind power generation system as the main research object, based on the principle of the operating characteristics of direct drive permanent magnet synchronous wind generator ( DDPMG ), establish mathematical model of the whole system including wind velocity, wind turbine, direct drive permanent magnet synchronous generator and machine side converter, Appling the method of stator flux orientation to make the study of vector control strategy, to build the simulation model of direct drive permanent magnet synchronous generator system with Matlab and simulate when wind speed changes by step, the results validate the reasonableness of the model and the correctness and feasibility of the control strategy.

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