共面波导-微带耦合谐振器测量风力机叶片覆冰厚度研究  

Research on Measuring the Ice Thickness of Wind Turbine Blade by CPW-Microstrip Coupled Resonator

作　　者：钱江波[1] 张志杰 李振宇[1] 李岩[1] 叶成 姚颢 QIAN Jiang-Bo;ZHANG Zhi-Jie;LI Zhen-Yu;LI Yan;YE Cheng;YAO Hao(Department of Power Engineering,North China Electric Power University,Baoding 071003,China;Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd.,Shanghai 200233,China)

机构地区：[1]华北电力大学(保定)动力工程系,保定071003 [2]上海核工院研究设计院有限公司,上海200233

出　　处：《工程热物理学报》2021年第5期1200-1204,共5页Journal of Engineering Thermophysics

摘　　要：风力机叶片覆冰现象严重影响其安全、经济运行,开展覆冰厚度在线测量技术研究具有重要的实际意义。本文提出了共面波导-微带耦合谐振器测量覆冰厚度的方法。通过耦合谐振器等效电路分析,得到了介质厚度测量的理论关系式;建立了耦合谐振器电磁场仿真模型,在谐振器表面覆盖不同介电常数、不同厚度的介质,计算得到了谐振器的谐振频率,进而得到了测量介质厚度的通用关系式,给出了谐振器谐振频率、介电常数和介质厚度之间的函数关系;制作了共面波导-微带耦合谐振器,开展了谐振器表面覆冰实验,测量厚度和实际厚度的相对误差在15%以内,验证了共面波导-微带耦合谐振器测量风力机叶片表面覆冰厚度的可行性。该方法对研究飞机机翼覆冰及其他介质厚度测量具有一定借鉴意义。The icing of wind turbine blades seriously affects its safe and economic operation.It is of great practical significance to carry out the research on the online measurement technology of ice coating thickness.This paper proposes a method to measure the ice coating thickness on wind turbine blades with coplanar waveguide-microstrip coupled resonator.Through the analysis of the equivalent circuit of the coupled resonator,we derive the theoretical relationship of medium thickness measurement;We perform a coupled resonator electromagnetic field simulation model,cover the surface of the resonator with different dielectric constants and different thicknesses of medium,and calculate the resonant frequency of the resonator;We then establish the general relationship for measuring the thickness of the medium,and gave the functional relationship between resonance frequency,dielectric constant and medium thickness;We subsequently fabricate a CPW-microstrip coupled resonator and carry out a series of experiments of ice coating on the resonator surface.Finally,the relative error between the measured and calculated ice layer thickness from the general relationship is within 15%,which verify the feasibility of CPW-microstrip coupled resonator when measuring thickness of ice coating on wind turbine blade surface.This method has certain reference significance for studying the thickness measurement of aircraft wing ice and other medium.

关 键 词：风力机叶片 覆冰 厚度测量 共面波导-微带 

分 类 号：TK123[动力工程及工程热物理—工程热物理]