海上漂浮式风机变桨距控制策略研究  

Variable pitch control strategy for offshore floating fan

作　　者：程志江 袁嘉旺 陈星志 刘登权 王智强 CHENG Zhijiang;YUAN Jiawang;CHEN Xingzhi;LIU Dengquan;WANG Zhiqiang(Engineering Research Center of Renewable Energy Power Generation and Grid-connected Technology,Ministry of Education,Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学可再生能源发电与并网技术教育部工程研究中心,乌鲁木齐830047

出　　处：《振动与冲击》2023年第15期260-267,297,共9页Journal of Vibration and Shock

基　　金：新疆维吾尔自治区自然基金(2021D01C046);新疆维吾尔自治区重点实验室建设项目(2021D04011);新疆维吾尔自治区重大科技专项(2022A1001-3)。

摘　　要：海上漂浮式风机服役环境复杂,为了在风浪载荷的联合作用下减少漂浮式风机的发电功率以及风轮转速的波动。在FAST基础控制的基础上提出了将分数阶比例-积分-微分(proportional-integral-derivative,PID)变桨控制,来抑制风、浪载荷的影响。以美国可再生能源实验室的5 MW的OC4海上漂浮式风机为研究对象,首先建立了基于分数阶PID变桨距控制的漂浮式风机的动力学模型,结合遗传算法对控制的参数进行寻优,来提高系统的控制效果。使用了FAST与SIMULINK联合仿真,研究其对发电功率和风轮转速以及平台6自由度运动的影响,并且对变桨以后平台6自由度的运动进行了建模与分析研究。结果表明,与FAST基础PID控制器相比,基于遗传算法寻优的分数阶PID控制器具有更高的控制精度,有效降低输出功率和风轮转速的波动,而且会对6自由度的运动产生影响。Service environment of offshore floating fan is complex.Here,to reduce fluctuations of power generation and wind wheel rotating speed of floating wind turbine under the combined action of wind and wave loads,based on the basic control of FAST,a fractional order proportional integral differential(PID)variable pitch control was proposed to suppress effects of wind and wave loads.Taking a 5 MW OC4 offshore floating fan of American Renewable Energy Laboratory as the study object,firstly,the dynamic model of the floating wind turbine based on the fractional order PID variable pitch control was established.Then control parameters were optimized using genetic algorithm to improve the control effect of the system.The joint simulation of FAST and SIMULINK was used to study the proposed control’s effects on power generation,wind wheel rotating speed and platform 6DOF motions.The platform 6DOF motions after varying pitch were modeled and analyzed.The results showed that compared to the FAST base PID controller,the fractional order PID variable pitch controller based on genetic algorithm optimization has higher control accuracy to effectively reduce fluctuations of output power and wind wheel rotating speed,and affect 6DOF motions of wind turbine platform.

关 键 词：海上漂浮式风机 动力学模型 变桨控制 漂浮式平台 发电功率 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3