Fuzzy model based multivariable predictive control design for rapid and efficient speed-sensorless maximum power extraction of renewable wind generators

Authors

DOI:

https://doi.org/10.20998/2074-272X.2022.3.08

Keywords:

small-scale wind generator, maximum power point tracking, fuzzy system, fuzzy model based multivariable predictive control, linear matrix inequalities approach

Abstract

Introduction. A wind energy conversion system needs a maximum power point tracking algorithm. In the literature, several works have interested in the search for a maximum power point wind energy conversion system. Generally, their goals are to optimize the mechanical rotation or the generator torque and the direct current or the duty cycle switchers. The power output of a wind energy conversion system depends on the accuracy of the maximum power tracking controller, as wind speed changes constantly throughout the day. Maximum power point tracking systems that do not require mechanical sensors to measure the wind speed offer several advantages over systems using mechanical sensors. The novelty. The proposed work introduces an intelligent maximum power point tracking technique based on a fuzzy model and multivariable predictive controller to extract the maximum energy for a small-scale wind energy conversion system coupled to the electrical network. The suggested algorithm does not need the measurement of the wind velocity or the knowledge of turbine parameters. Purpose. Building an intelligent maximum power point tracking algorithm that does not use mechanical sensors to measure the wind speed and extracts the maximum possible power from the wind generator, and is simple and easy to implement. Methods. In this control approach, a fuzzy system is mainly utilized to generate the reference DC-current corresponding to the maximum power point based on the changes in the DC-power and the rectified DC-voltage. In contrast, the fuzzy model-based multivariable predictive regulator follows the resultant reference current with minimum steady-state error. The significant issues of the suggested maximum power point tracking method, such as the detailed design process and implementation of the two controllers, have been thoroughly investigated and presented. The considered maximum power point tracking approach has been applied to a wind system driving a 5 kW permanent magnet synchronous generator in variable speed mode through the simulation tests. Practical value. A practical implementation has been executed on a 5 kW test bench consisting of a dSPACEds1104 controller board, permanent magnet synchronous generator, and DC-motor drives to confirm the simulation results. Comparative experimental results under varying wind speed have confirmed the achievable significant performance enhancements on the maximum wind energy generation and overall system response by using the suggested control method compared with a traditional proportional integral maximum power point tracking controller.

Author Biographies

B. Babes, Research Center in Industrial Technologies CRTI

Senior Researcher A

N. Hamouda, Research Center in Industrial Technologies CRTI

Senior Researcher A

S. Kahla, Research Center in Industrial Technologies CRTI

Senior Researcher A

H. Amar, Research Center in Industrial Technologies CRTI

Senior Researcher B

S. S. M. Ghoneim, College of Engineering, Taif University

PhD, Associate Professor, Department of Electrical Engineering

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Published

2022-05-30

How to Cite

Babes, B., Hamouda, N., Kahla, S., Amar, H., & Ghoneim, S. S. M. (2022). Fuzzy model based multivariable predictive control design for rapid and efficient speed-sensorless maximum power extraction of renewable wind generators. Electrical Engineering & Electromechanics, (3), 51–62. https://doi.org/10.20998/2074-272X.2022.3.08

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Section

Power Stations, Grids and Systems