Passive Vibration Control of Floating Offshore Wind Turbine Based on Mechatronic Inerter

doi:10.3901/JME.2023.05.202

Abstract

Abstract: Mechatronic inerter is a new type of inerter device that utilizes circuit networks to achieve high-order mechanical impedances with performance and space advantages. Due to the limited nacelle space of offshore wind turbines, the influence of mechatronic inerter located in a floating platform on the mechanical loads of barge-type offshore wind turbines is studied. According to the characteristics of the DC motor, the torque output of the motor shaft has a linear relationship with the current in the motor circuit. Therefore, for the established mechatronic inerter, focuses on the effects of all circuit networks consisting of a single resistor, capacitor, and inductor on the vibration reduction performance of floating wind turbines. In order to reduce the complexity of the optimization process, a three-degree-of-freedom (3DOF) barge-type offshore wind turbine model is first established, and then the H₂ norm of the input and output transfer functions including the circuit network model is optimized to obtain the optimal parameters of the circuit network. Finally, the optimization results are simulated based on the USA National Renewable Energy Laboratory 5 MW baseline wind turbine model. The simulation results show that the established mechatronic inerter tuned mass damper(MITMD) system can effectively reduce the structural load of the wind turbine system if the working stroke of the device is not considered. Compared with the case where the vibration device in the nacelle, the MITMD system in the platform established can reduce the load on the tower base and the tower top at the same time. The control effect of MITMD comes at the expense of motion displacement, therefore, in practical applications, it is necessary to compromise between the vibration reduction effect and the working stroke of the device.

Key words: offshore wind turbine, mechatronic inerter, vibration control, passive circuit, TMD

CLC Number:

TK83

HU Yinlong, XU Jin, CHENG Changjun, ZHOU Hui, CAI Xuhao. Passive Vibration Control of Floating Offshore Wind Turbine Based on Mechatronic Inerter[J]. Journal of Mechanical Engineering, 2023, 59(5): 202-211.

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