Rotor Speed Control of a Direct-Driven Permanent Magnet Synchronous Generator-Based Wind Turbine Using Phase-Lag Compensators to Optimize Wind Power Extraction

被引：11

作者：

Hamatwi, Ester ^{[1
]}

Davidson, Innocent E. ^{[2
]}

Gitau, Michael N. ^{[3
]}

机构：

[1] Department of Electrical, Electronic and Computer Engineering, University of KwaZulu-Natal, University Road, Durban,4000, South Africa

[2] Department of Electric Power Engineering, Durban University of Technology, Corner of Botanic Gardens and Steve Biko Roads, Durban,4000, South Africa

[3] Department of Electrical, Electronics and Computer Engineering, University of Pretoria, Lynnwood Road, Pretoria,0002, South Africa

来源：

Journal of Control Science and Engineering | 2017年 / 2017卷

关键词：

Permanent magnets - Proportional control systems - Wind power - Synchronous generators - Wind turbines - Maximum power point trackers - Speed control - Electric machine control - Two term control systems - Uncertainty analysis;

D O I：

10.1155/2017/6375680

中图分类号：

学科分类号：

摘要：

Due to the intermittent nature of wind, the wind power output tends to be inconsistent, and hence maximum power point tracking (MPPT) is usually employed to optimize the power extracted from the wind resource at a wide range of wind speeds. This paper deals with the rotor speed control of a 2 MW direct-driven permanent magnet synchronous generator (PMSG) to achieve MPPT. The proportional-integral (PI), proportional-derivative (PD), and proportional-integral-derivative (PID) controllers have widely been employed in MPPT studies owing to their simple structure and simple design procedure. However, there are a number of shortcomings associated with these controllers; the trial-and-error design procedure used to determine the P, I, and D gains presents a possibility for poorly tuned controller gains, which reduces the accuracy and the dynamic performance of the entire control system. Moreover, these controllers' linear nature, constricted operating range, and their sensitivity to changes in machine parameters make them ineffective when applied to nonlinear and uncertain systems. On the other hand, phase-lag compensators are associated with a design procedure that is well defined from fundamental principles as opposed to the aforementioned trial-and-error design procedure. This makes the latter controller type more accurate, although it is not well developed yet, and hence it is the focus of this paper. The simulation results demonstrated the effectiveness of the proposed MPPT controller. © 2017 Ester Hamatwi et al.

引用