Experimental investigation on voltage performance of piezoelectric energy harvester with various slopes of flow rectifier

Articles in Press

Document Type : Research Article

Authors

1 Department of Mechanical Engineering, Jakarta Global University, Depok 16412, Indonesia

2 Research Centre of Hydrodynamics Technology, BRIN, 60111 Surabaya, Indonesia

Abstract

In this study, we investigated the PEH performance in a wind tunnel experiment with a 250 mm × 250 mm cross-section. The PEH comprised a piezoelectric bimorph and a rectangular substrate. Wind flow induced by a blower within the tunnel achieves 6, 7, and 8 m/s speeds. A rectifier directed the flow toward the windmill blade for optimal energy generation. Three variation slopes of the flow rectifier were analyzed in terms of output voltage and deflection. The results show that the PEH performance improves as windspeed and the slope angle increase. At an angle of 40° and a speed of 6 m/s, PEH generates a voltage of 5.77 V and increases by 1.2 times at a windspeed of 8 m/s and an angle of 60° (12.67 V). Similar conditions occur in effective voltage (Vrms), where the value increases 1.6 times from 2.02 V to 5.33 V. Also, he deflection of the PEH increased by 37% from 1.49 cm to 2.05 cm. An Angle of 60° has a shorter narrowed area, thus changing the velocity vector to become faster. Wind speed increases encourage the windmill to rotate faster, which leads to the deflection of PEH, therefore, generates higher electricity.

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Scientia Iranica

Articles in Press, Accepted Manuscript
Available Online from 20 January 2025

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History

  • Receive Date: 23 February 2024
  • Revise Date: 23 July 2024
  • Accept Date: 20 January 2025

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