Development of high power output wave power generation system using magnetostrictive vibrational power switch

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630107
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Kanazawa University
• Principal Investigator: UENO Toshiyuki 金沢大学, 電子情報学系, 准教授 (30338256)
• Co-Investigator(Kenkyū-buntansha): SAITO Takehisa 金沢大学, 理工研究域環境デザイン学系, 教授 (40242531)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 振動発電 / 波力発電 / 磁歪材料

Outline of Final Research Achievements

We investigated potential of wave power generation using magnetostrictive material. The power generation system consists of plate of magnetostrictive element (Fe-Ga alloy) with coil wound, stainless yoke, permanent magnet, and free vibration inducing mechanism using desorption of permanent magnet. Here, the trigger forces are buoyancy of a buoy or rebound　wave at quay. In former case, we demonstrated power generation by free vibration occurred by difference of buoyancy accompanied with up and down of surface of water. In latter case, we verified power generation by free vibration occurred by up and down motion of switching plate caused by the rebound　wave. In both case, we succeeded to retrieve electrical energy of mJ order by single vibration enough to operate wireless sensor module.

Free Research Field

振動発電