风力机大型化已成为风电技术发展的主要趋势。但随之而来的叶片尺寸增大、气弹特性增强、多尺度流动等问题将导致叶片处于更加复杂严峻的风况及载荷环境。为提高叶片应对复杂风况及载荷的能力，提高叶片气动效率，有必要采用先进有效的流动控制技术以满足叶片气动降载与流动分离控制的需求。针对当前主流的流动控制技术进行了介绍，并对较具发展潜力的尾缘襟翼与自适应襟翼研究现状进行了重点介绍。现阶段流动控制技术并未在风力机叶片中得到广泛应用，一方面在于流动控制技术尚难与叶片现有主体控制技术相结合，以达到相辅相成的控制效果；另一方面在于对于部分控制技术，如自适应襟翼等，其控制特点尤其是其在风力机实际运行中的控制特点尚不明确。后续研究中，对于叶片气动降载，应结合更为先进的控制方法与更可靠的研究手段开展尾缘襟翼控制与叶片主体控制的协同控制研究；对于流动分离控制技术，应侧重于改善被动控制技术在非适用工况下的不良影响，同时开展流动控制技术在整机中的实验与数值研究，加快流动分离控制技术的实际应用。

Large-scale wind turbine has become the main trend of wind power technology development.However,the following problems,such as the increase of blade size,aeroelastic characteristics and multi-scale flow,will lead to more complex and severe wind conditions and load environment for blades.In order to improve the ability of blades to cope with complex wind conditions and loads,and improve the aerodynamic efficiency,it is necessary to adopt advanced and effective flow control technology to meet the requirements of aerodynamic load reduction and flow separation control for the blades.In this paper,the current mainstream flow control technology is introduced,and the research status of trailing edge flap and adaptive flap with great potential for development is mainly introduced.At present,the flow control technology has not been widely used in the wind turbine blades.One challenge is how to combine the flow control technology with the existing main control technology of blades to achieve complementary control effect,the other one is that for some control technologies,such as adaptive flap,its control characteristics,especially in the actual operation of wind turbines,are still unclear.In the future research,more advanced control methods and more reliable research methods should be combined to carry out the collaborative control research of trailing edge flap control and blade main body control.For flow separation control technology,emphasis should be placed on improving the adverse effects of passive control technology under non-applicable conditions,and conducting experimental and numerical research on flow control technology in the whole machine,so as to accelerate the practical and reliable application of flow separation control technology.

TK83

国家自然科学基金（51676131）；国家自然基金国际(地区)合作与交流项目（51811530315）；上海市“科技创新行动计划”地方院校能力建设项目（19060502200）