Linear electromagnetic electric generator for harvesting vibration energy at frequencies more than 50 Hz:

摘要

This study proposes a linear electromagnetic generator that can harvest vibration energy from a transformer and supply electricity to a monitoring system. The sensor system delivers voltage and electricity information from a transformer and it usually requires a battery that must be replaced periodically. These result in high costs, working hours, and manpower, and workers may sometimes face very dangerous situations, especially when a transformer is located in a mountainous area or an elevated position that cannot be accessed easily. The transformer vibrates at a frequency of approximately 50?Hz or higher. In this study, a linear electromagnetic generator was designed to analyze and harvest this vibration energy. A prototype was produced and its performance was tested, which showed that more than 100?mW of electricity could be produced, which is the minimum amount required for the electricity analysis system.