Development of a Driving Electric Dynamometer Rotor Emulator for MHK In‐Stream Turbines
Development of a Driving Electric Dynamometer Rotor Emulator for MHK In‐Stream Turbines
复制标题
MHK 流内涡轮机驱动电动测功机转子仿真器的开发
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
James H. VanSwieten
中科院分区：
文献类型：
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作者：
W. E. Laing;James H. VanSwieten
随着海洋和流体动力学(MHK)技术的发展，将流体流动转化为有用的电力，需要在现场安装之前在实验室模拟传动系统性能并改进控制策略。本文介绍和评价了一种开发的操作测功机原动机的技术，以使其驱动被测机器，如MHK汽轮机的转子。该方法利用环境和旋翼的数值模型来计算水动力扭矩。利用轴扭矩、轴转速和变频驱动固有扭矩参考之间的关系来修改扭矩参考设置，以获得实际的仿真扭矩值。然后评估了三种基本操作状态下物理轴扭矩与理论水动力扭矩匹配的精确度：锁定转子、自转加速/减速和变流量操作。在这些状态的仿真过程中，轴系扭矩的平均实测值和理论值的百分比误差分别为9.7%、5.5%和5.2%，证明了该方法的应用是成功的。
As marine and hydrokinetic (MHK) technologies which convert the flow of fluid into useful electrical power are developed, it is desirable to simulate drivetrain performance and refine control strategies in a laboratory prior to field installation. This paper presents and evaluates a technique developed to operate the prime mover of a dynamometer so that it drives a machine under test like an MHK turbine’s rotor. The approach utilizes environmental and rotor numerical models to calculate hydrodynamic torque. Relationships between shaft torque, shaft speed, and variable frequency drive native torque reference were used to modify torque reference settings to achieve actual emulated torque values. The accuracy at which physical shaft torque matches theoretical hydrodynamic torque was then evaluated for three basic operating states: locked rotor, spin up/down, and variable flow operation. Percent‐error of averaged measured and theoretical shaft torque during simulation of these states was 9.7%, 5.5%, and 5.2%, respectively, demonstrating the success of applying the proposed technique.