Autonomous monitoring unit of fault condition with vibration energy harvester

Vetiska, Vojtech; Hynčica, Ondřej; Ondrůšek, Čestmír; Hadaš, Zdeněk

doi:10.1109/eeeic.2015.7165297

Cited by 2 publications

(1 citation statement)

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“…The effectiveness of the method was demonstrated with simulation results. The autonomous machine monitoring unit with the wireless sensor module, where the piezo electronics were used to the vibration measurement and energy harvesting, is given in Reference [11]. This energy harvesting system can provide the battery charging time up to 100 s. The magnetic sprung generator is another method of vibration measurement using energy harvesting, where the influence of the vibration frequencies on the amount of the harvested energy is the main studied effect [12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Macro Fiber Composite-Magnet Energy Harvester for Self-Powered Active Magnetic Bearing Rotor Vibration Sensor

Mystkowski

Ostaševičius

2020

Energies

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The paper presents the design, fabrication, and characterization of an energy harvester for an active magnetic bearing (AMB) rotor vibration using a macro fiber composite (MFC) with magnetic coupling. The MFC cantilevers configuration, together with neodymium magnets, is used for the contact-free rotor radial vibration self-powered sensor. The permanent magnets attached to the rotor and to the four MFC element beams ensure the mechanical energy transfer and the MFC cantilever vibration excitation. In the proposed prototype, the MFC transducer output voltage depends on the air-gap between two magnets. This paper investigates the optimum conditions to harvest as much as possible electric energy at different clearances and rotational speeds. Furthermore, to assess the rotor vibration sensitivity, the experimental results of the MFC-magnet self-powered sensor are compared with measurements obtained using a fiber optic sensor. The maximal obtained harvesting power equals 673.47 µW for the rotor speed of 3150 rpm. Moreover, the MFC cantilever was proposed as the rotor vibration sensor. The MFC-magnet self-powered vibration sensor output was compared with the fiber optic laser sensor. The mismatched vibration amplitude for both sensors does not exceed 1 µm.

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Section: Introductionmentioning

confidence: 99%