CAJ | 학술논문

文章采用磁粉制动器模拟PTO阻尼研制了浮力摆式波浪能装置的物理模型，并采用有机玻璃制作摆板，采用高速CCD摄像机追踪浮力摆运动过程。通过水槽试验分析了浮力摆的固有周期、波能功率的非线性影响、PTO阻尼特性，并研究了浮力摆摆幅、转换功率和转换效率随波况、激磁电流的变化情况。研究表明：试验波面的非线性对于波能功率的影响不大；各试验工况中装置摩擦阻力矩的幅值基本相等，约为1.5 Nm；PTO阻力矩的模拟结果与恒定阻力矩存在较明显差别，波周期对装置的PTO阻尼特性和浮力摆摆幅有显著影响；根据试验结果，在周期5.0 s、波幅0.34 m的原型海况条件下，激磁电流为0.6 A时，装置的转换功率约为14 kW，转换效率约为60%。
문장채용자분제동기모의PTO조니연제료부력파식파랑능장치적물리모형，병채용유궤파리제작파판，채용고속CCD섭상궤추종부력파운동과정。통과수조시험분석료부력파적고유주기、파능공솔적비선성영향、PTO조니특성，병연구료부력파파폭、전환공솔화전환효솔수파황、격자전류적변화정황。연구표명：시험파면적비선성대우파능공솔적영향불대；각시험공황중장치마찰조력구적폭치기본상등，약위1.5 Nm；PTO조력구적모의결과여항정조력구존재교명현차별，파주기대장치적PTO조니특성화부력파파폭유현저영향；근거시험결과，재주기5.0 s、파폭0.34 m적원형해황조건하，격자전류위0.6 A시，장치적전환공솔약위14 kW，전환효솔약위60%。
With the power take-off (PTO) mechanism simulated by magnetic powder brake for the first time, a physical model of bottom-hinged flap WEC (wave energy converter) was developed, in which the flap was made by plexiglass, the pitching process of the flap was followed by a high-speed CCD camera. Natural pe-riod of the flap, nonlinear influence on wave power and PTO damping’s character were analyzed through flume experiment. And the relationships between pitch amplitude, power capture, capture factor and exci-tation currents, wave condition were also studied. The results show that nonlinearity of the wave surface has small effect on the wave power. The friction moments of the model device are almost the same for different experiment conditions, the amplitudes of which are about 1.5 Nm. There is an obvious difference between the simulated PTO moment and the constant resistance moment. Wave periods have significant impact on PTO damping character and pitch amplitude of flap. According to the experimental results, in the prototype wave state of period 5.0 s and wave amplitude 0.34 m, the power capture of the WEC is about 14 kW, and the capture is about 60%.