CAJ | 학술논문

文章为解决水平轴潮流能发电系统在低于设计流速下叶轮能量捕获效率低的问题,运用最大功率跟踪控制理论及叶轮与变量泵传动轴力矩平衡方程,建立了变量泵反力矩参考值模型,设计了间接速度控制的压力反馈加转矩控制系统,通过小范围内调节变量泵排量,实现叶轮最大功率捕获。整个系统的性能在自动化工作室(automation studio)中进行了仿真测试,实验样机也进行了海上试验。仿真测试和海试结果显示,该控制系统工作稳定性好,仿真和海试时叶轮的捕获功率系数分别在0.35和0.33附近波动,相比不加控制,分别增加了约0.03和0.05,提高了叶轮的捕获效率,验证了控制系统的有效性。
문장위해결수평축조류능발전계통재저우설계류속하협륜능량포획효솔저적문제,운용최대공솔근종공제이론급협륜여변량빙전동축력구평형방정,건립료변량빙반력구삼고치모형,설계료간접속도공제적압력반궤가전구공제계통,통과소범위내조절변량빙배량,실현협륜최대공솔포획。정개계통적성능재자동화공작실(automation studio)중진행료방진측시,실험양궤야진행료해상시험。방진측시화해시결과현시,해공제계통공작은정성호,방진화해시시협륜적포획공솔계수분별재0.35화0.33부근파동,상비불가공제,분별증가료약0.03화0.05,제고료협륜적포획효솔,험증료공제계통적유효성。
In order to solve the problem of low energy capturing efficiency of the horizontal axis turbine in tidal current power generation system at low current speed, a variable pump counter torque reference value model was established. In this study, based on the maximum power tracking theory and the torque equilibrium equation of turbine versus variable pump, a control system with indirect speed control, pressure feedback, and torque control was designed to achieve the maximum power capture of the turbine by regulating the output of the variable pump in a small range. The performance of the designed control system was simulated by means of the Automation Studio software, and corresponding sea test was conducted. Test results showed that the control system ran steadily, the captured power coefficient of the turbine fluctuated near 0.35 and 0.33, respectively, in the simulation and sea trials; compared with the uncontrolled, these numbers increased by 0.03 and 0.05, respectively. The capture efficiency of the turbine was enhanced, and the effectiveness of the control system was verified.