There is a sudden fluctuations in wind speed and change of direction that affects the generator speed thus power generation of wind turbine system, so a controller like maximum power point tracking (MPPT) algorithm is essential in tracking the maximum power out of the available wind speed. MPPT algorithm can be classified into two categories such as with and without sensor as well as according to the algorithms used to find the maximum peak. A comparative analysis of different types of MPPT control methods on the basis of different speed responses and ability to obtain maximum power has been conducted. The literature based on the simulation results points out that the optimal torque control is a better MPPT control method for achieving the maximum power from wind turbine energy system against the most frequently used perturb and observe (P&O) method. The P&O method on the other hand is flexible and easy to implement but provide fluctuations about the maximum power point and is less efficient. The different types of MPPT techniques have been studied for wind turbine renewable energy system. The study points out that MPPT may also include of different dc–dc power converter and various control methods, and hybrid renewable energy system can be developed with multi-input energy systems.

中文翻译：

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可再生能源系统优化技术的比较研究

风速的突然波动和方向变化会影响发电机速度，从而影响风力涡轮机系统的发电，因此像最大功率点跟踪（MPPT）算法这样的控制器对于从可用风速中跟踪最大功率至关重要。MPPT算法可以分为两类，例如带传感器和不带传感器，以及根据用于找到最大峰的算法。基于不同的速度响应和获得最大功率的能力，对不同类型的MPPT控制方法进行了比较分析。基于仿真结果的文献指出，最佳转矩控制是一种更好的MPPT控制方法，可针对最常用的扰动和观测来获得风力发电机组能量系统的最大功率（P＆O）方法。另一方面，P＆O方法灵活且易于实施，但会在最大功率点附近产生波动，效率较低。已经针对风力涡轮机可再生能源系统研究了不同类型的MPPT技术。研究指出，MPPT还可能包括不同的dc-dc功率转换器和各种控制方法，并且可以使用多输入能源系统开发混合可再生能源系统。