The paper presents the development of a downscaled hardware-in-the-loop (HiL) setup for a wave energy converter heaving point absorber. HiL simulation involves the buoy motion coupled to a gearbox system that converts the buoy’s vertical movement into rotational. The dynamic movement of the heaving buoy is simulated and converted into rotation. A process is employed to determine the resultant torque based on the generator’s rotational speed. The use of an online derivative technique allows the system to implement an inertia emulation. Consequently, without modifying physical components, it is possible to change the system dimension. The demanded torque is then applied using an electric machine torque control loop. The technique is developed for real-time implementation and allows the reproduction of different wave conditions. Froude’s law is used to determine the scale down factor considering the machine limitations and the wave conditions. Experimental results validate the methodology.

本文介绍了用于波能转换器升沉点吸收器的缩小规模的硬件在环（HiL）设置的开发。HiL仿真涉及将浮标运动耦合到变速箱系统，该变速箱系统将浮标的垂直运动转换为旋转运动。模拟浮标的动态运动并将其转换为旋转。根据发电机的转速，采用一种过程来确定合成转矩。在线导数技术的使用允许系统实现惯性仿真。因此，无需修改物理组件，就可以更改系统尺寸。然后，使用电机转矩控制回路施加所需转矩。该技术是为实时实现而开发的，并允许再现不同的波浪状况。考虑机器限制和波动条件，使用弗洛德定律确定比例缩小因子。实验结果验证了该方法的有效性。