Performance assessment of an energy harvesting system located on a copter
Performance assessment of an energy harvesting system located on a copter
复制标题
DOI：
10.1140/epjst/e2019-800128-3
复制
发表时间：
2019-08-01
影响因子：
2.8
通讯作者：
Oldziej, D.
中科院分区：
文献类型：
--
作者：
Koszewnik, A.;Oldziej, D.
从用于自主电动应用的移动结构（即，无人驾驶飞行器（UAV），特别是在四旋翼的情况下）获取能量在过去几年中一直是科学研究的共同主题。他们中的大多数人都在研究如何使用光伏或振动收集等技术来提高电动无人机的续航能力。无人机平台的电力供应量有限。为了保持恒定的飞行持续时间，无人机可以配备额外的电池，这增加了总质量并导致更高的能量损失。因此，我们通过提出基于振动的能量收集系统来解决这个问题。它由集成到BLDC转子框架中的压电收割机组成。为了检查能量收集系统的效率，直升机配备了MFC收集器。考虑到这一解决方案，机电系统的分布参数在模态坐标估计使用数值方法。仿真结果显示了施加到BLDC转子的PWM信号的占空比和连接到系统的电阻性负载对压电采集器产生的电压的影响，而实验测试允许验证它们。
Energy harvesting from moving structures for autonomous electrically powered applications, i.e. unmanned aerial vehicles (UAVs), especially in the case quadrotors, has been a common subject of scientific investigations in last years. Most of them have looked into improving the endurance of electrically powered UAVs using technologies such as photovoltaic or vibration harvesting. UAV platforms have a limited amount of power for electrical suppling. In order to keep a constant time of flight duration, the UAV can be equipped with an additional battery, which increases the total mass and causes higher energy losses. Therefore, we address this problem in our paper by proposing a vibration-based energy harvesting system. It consists of piezoelectric harvesters integrated into a frame of BLDC rotors. In order to check efficiency of the energy harvesting system, the copter is equipped with MFC harvesters. Taking into account this solution, the distributed-parameters of the electromechanical system in the modal coordinates are estimated using numerical methods. The simulation results showedhow the duty cycle of the PWM signal applied to the BLDC rotor and resistive load connected to the system influence on voltage generating by the piezo harvester, while experimental test allow verify them.