Development of a Vibration Powered Micro Generator and its Application to Harvest the Vibration Energy of the KRI KKP-811’s Engine

Harus L.G. (Department of Mechanical Engineering, Faculty of Industrial Technology ITS, Surabaya)
Wiwiek Hendrowati (Department of Mechanical Engineering, Faculty of Industrial Technology ITS, Surabaya)
Rahmat Susanto (Department of Mechanical Engineering, Faculty of Industrial Technology ITS, Surabaya)

Jurnal Teknik Mesin
Vol. 12 No. 2 (2010): OCTOBER 2010

Vibration energy harvesting has been receiving a considerable amount of interest as a means of powering wireless sensors and low-power devices. In this paper, an energy harvester is presented to convert ambient mechanical vibration into electrical energy employing magnetoelectric generator. The harvester uses single magnet-spring attached on the coil. When the harvester is excited, the magnet moves relative to the coil, undergoes magnetic field variations and produces a power output. To obtain a maximum power output, the mass of magnet is varied. The magnetoelectric generator with various masses of magnets was tested by a harmonic exciter with various frequencies and amplitudes. The one with maximum power output was then applied to harvest the ambient vibration energy of KRI KKP-811’s Engine. The results show that this prototype can harvest maximum energy of 2μW when it is placed at the base/foundation of the engine.