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首页> 外文期刊>Industrial Electronics, IEEE Transactions on >New Overall Power Control Strategy for Variable-Speed Fixed-Pitch Wind Turbines Within the Whole Wind Velocity Range
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New Overall Power Control Strategy for Variable-Speed Fixed-Pitch Wind Turbines Within the Whole Wind Velocity Range

机译：整个风速范围内变速定距风力发电机的新型总体功率控制策略

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摘要

Variable-speed fixed-pitch (VSFP) wind turbines have good prospects in small-to-medium-scale wind power markets due to their simple structure, low cost, and high reliability. One difficulty with VSFP concept wind turbines is to prevent overspeeding and overloading problems at excessive wind velocities, which has rarely been reported in literatures until now. This paper first proposes a sensorless overall power control strategy for a commonly used permanent-magnet-synchronous-generator-based VSFP concept wind power system, with which maximum power point tracking operation, constant speed stalling operation, and constant power soft-stalling operation are all realized. The proposed control scheme has a special advantage of simple structure, i.e., only two regulators are used to realize the three operational modes and also the natural transition between them. An aerodynamic power observer is adopted in the proposed scheme to fasten the MPPT speed. In addition, to enhance system robustness to parameter variations and optimize dynamic and static speed-control performance, an adaptive PI-like fuzzy logic controller is proposed and used as speed regulator in the overall power control scheme. The proposed strategy is verified by simulation and experimental results performed by a 1.2-kW VSFP concept wind turbine prototype.
机译：变速固定螺距（VSFP）风力涡轮机因其结构简单，成本低廉和可靠性高而在中小型风力发电市场中具有良好的前景。 VSFP概念风力涡轮机的一个难题是要防止在过高的风速下出现超速和过载问题，这在迄今为止的文献中鲜有报道。本文首先针对常用的基于永磁同步发电机的VSFP概念风力发电系统提出了一种无传感器的整体功率控制策略，该系统具有最大功率点跟踪运行，恒速失速运行和恒功率软滞后运行。全部实现。提出的控制方案具有结构简单的特殊优点，即，仅使用两个调节器来实现这三种操作模式以及它们之间的自然过渡。提出的方案中采用了气动动力观测器以加快MPPT速度。此外，为了增强系统对参数变化的鲁棒性并优化动态和静态速度控制性能，提出了一种自适应PI式模糊逻辑控制器，并将其用作整体功率控制方案中的速度调节器。通过1.2 kW VSFP概念风力涡轮机原型进行的仿真和实验结果验证了所提出的策略。

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