Design and Experimental Evaluation of a Spring-Supported Double-Layer Piezoelectric Energy Harvester

Abstract

This study presents the design and experimental evaluation of a spring-supported double-layer piezoelectric energy harvester (PEH). The proposed system was developed to improve energy harvesting performance using a double-layer piezoelectric disk configuration supported by compression springs. For comparison, a conventional single-layer PEH platform was also designed and tested under the same operating conditions. Experiments were performed under applied force levels ranging from 10 to 100 N and excitation frequencies between 0.2 and 1.4 Hz. The electrical output performance of both systems was evaluated in terms of output voltage, output current, and output power. The results showed that the spring-supported double-layer PEH produced higher electrical output than the single-layer configuration under all tested conditions. At 100 N and 1.4 Hz, the output voltage increased from 20.4 V to 37.4 V, the output current increased from 0.354 mA to 0.548 mA, and the output power increased from 7.222 mW to 20.495 mW. This corresponds to a power improvement of approximately 183.8%. The proposed PEH configuration demonstrates potential for harvesting mechanical energy and serving as an auxiliary energy source for low-power electronic devices.

Keywords

• Double-layer PEH
• Mechanical energy harvesting
• Piezoelectric disk
• Piezoelectric energy harvester
• Spring-supported structure

Yay Destekli Çift Katmanlı Piezoelektrik Enerji Hasat Sisteminin Tasarımı ve Deneysel Değerlendirilmesi

Abstract

Bu çalışmada, yay destekli çift katmanlı piezoelektrik enerji hasat (PEH) sisteminin tasarımı ve deneysel değerlendirmesi sunulmaktadır. Önerilen sistem, sıkıştırma yayları ile desteklenen çift katmanlı piezoelektrik disk yapısı kullanılarak enerji hasat performansını artırmak amacıyla geliştirilmiştir. Karşılaştırma amacıyla, geleneksel tek katmanlı bir PEH sistemi de tasarlanmış ve aynı çalışma koşulları altında test edilmiştir. Deneyler, 10 ile 100 N arasında değişen uygulanan kuvvet seviyeleri ve 0,2 ile 1,4 Hz arasında değişen uyarma frekansları altında gerçekleştirilmiştir. Her iki sistemin elektriksel çıkış performansı, çıkış gerilimi, çıkış akımı ve çıkış gücü açısından değerlendirilmiştir. Sonuçlar, yay destekli çift katmanlı PEH'in, test edilen tüm koşullar altında tek katmanlı sisteme göre daha yüksek elektriksel çıkış ürettiğini göstermiştir. 100 N ve 1,4 Hz'de, çıkış gerilimi 20,4 V'tan 37,4 V'a, çıkış akımı 0,354 mA'dan 0,548 mA'ya ve çıkış gücü 7,222 mW'tan 20,495 mW'a yükselmiştir. Bu durum, yaklaşık %183,8'lik bir güç iyileştirmesine karşılık gelmektedir. Önerilen PEH sistemi, mekanik enerjinin hasat edilmesi ve düşük güçlü elektronik cihazlar için yardımcı bir enerji kaynağı olarak kullanılması açısından potansiyel göstermektedir.

Keywords

• Çift katmanlı PEH
• Mekanik enerji hasadı
• Piezoelektrik disk
• Piezoelektrik enerji hasat sistemi
• Yay destekli yapı

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