Tesis ini mengandungi pelbagai aplikasi permukaan pertukaran AC-DC dengan memeriksa prestasi perbandingan dari tenaga penuaian titisan hujan. Transduser piezolectrik PVDF adalah alat yg berkemungkinan untuk menukar tenaga mekanikal kepada tenaga elektrik daripada titisan. Projek ini memfokuskan beberapa parameter daripada analisis perbandingan seperti voltan masukan, arus masukan dan keluaran dalam tiga permukaan yang bernama jambatan penerus standard penuh dan pengsuisan yang diselaraskan pada induktor (SSHI). Pemodelan keluaran voltan yang dihasilkan kemudiannya digunakan dalam perisian bagi simulasi kemasukan arus ulang-alik kepada keluaran arus (AC-DC). Untuk meningkatkan analisis perbandingan, diod silikon berasaskan (1N914 dan MMSD4148) dan diod Schottky berdasarkan (1N5817 dan MBR0520L) dibandingkan dengan memandu keluaran voltan dan juga keluaran arus. Keputusan menunjukkan bahawa voltan input dan semasa bagi selari SSHI dengan kemasukan voltan 4.35 V dan 4.35 A arus menghasilkan 18.92 W kuasa manakala bagi siri-SSHI, ia menjana 3.75 V keluaran voltan dan 11.35 μA arus itu, 42.56 μW dihasilkan. Akhir sekali, analisis menunjukkan IN914 dan MBR0520L adalah dua diod berbeza yang menyumbang ukuran yang tertinggi dalam kuasa keluaran dan arus dan voltan disebabkan oleh voltan hadapan rendah dan arus.
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This thesis contains the application of various AC-DC converter interfaces by examining the comparative performances from raindrop energy harvesting. PVDF Piezoelectric transducer is a possible device to convert mechanical energy to electrical energy generated from droplet. The project focuses on several parameters from the comparative analysis such as the input voltage, input current, output voltage, output current, input power, as well as output power in three different interfaces namely: standard full-bridge rectifier and both parallel and series Synchronized Switching on Inductor (SSHI). The output voltage generated modelling was designed using Spice software for simulation of AC-DC output. To enhance the comparative analysis, silicon based diodes (1N914 and MMSD4148) and schottky based diodes (1N5817 and MBR0520L) were compared to drive up the output voltage as well as output current. Results showed that input voltage and current for parallel-SSHI with input voltage of 4.35V and 4.35 A of current produced 18.92 W whereas for series-SSHI, it generated 3.75 V of output voltage and 11.35 μA of current. Thus, 42.56 μW is produced. Last but not least, the analysis shows that IN914 and MBR0520L are two different diodes that shown the highest measurement in output power as well as current and voltage due to low forward voltage and current.
Analysis of ac-dc converter interface for raindrop energy harvesting application / Siti Noor Zahidah Abdul Latib