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Development of 5v 20a (100w) dc chopper using cuk topology / Mohd Noor Azimmi Redzuan

Development of 5v 20a (100w) dc chopper using cuk topology_Mohd Noor Azimmi Bin Redzuan_E3_2010_875003592_00003084284_NI

Abstract Laporan ini mengemukakan pembangunan sebuah penukar arus terus berdasarkan topologi Cúk dengan 5V dan 20A sebagai keluaran yang dimahukan. Penukar ini secara asasnya adalah berdasarkan kombinasi diantara topologi penukar ‘’Buck’’ dan ‘’Boost’’. Sama seperti penukar ‘’Buck-Boost’’, penukar Cúk menghasilkan voltan keluaran yang lebih rendah atau lebih tinggi daripada voltan masukan, akan tetapi kekutuban voltan keluaran adalah bertentangan dengan dengan kekutuban voltan masukan penukar ini. Di dalam projek ini, voltan keluaran bagi penukar jenis ini adalah lebih rendah berbanding voltan masukan. Hasil simulasi menunjukkan, penukar berupaya membekalkan sehingga 100W kuasa beban dengan kecekapan sebanyak 90% dibawah parameter nilai unggul dengan 5 ohm perintang kuasa sebagai beban. Nilai 10kHz bagi frekuensi pensuisan dipilih bagi penukar ini supaya tekanan terhadap pensuisan MOSFET dapat diminimumkan dengan penggunaan kitar tugas sebanyak 0.2. Hasil daripada implimentasi yang telah dijalankan, sebanyak 3.58V dan 11.9A keluaran voltan dan arus telah dihasilkan dan ini bermakna, jumlah kecekapan pemenggal adalah sebanyak 42.6%. _________________________________________________________________________________________ This report represents the development of DC chopper by using Cúk topology with 5V and 20A as its desired output. The chopper (converter) circuit is basically based on the combination of Buck and Boost converter topologies. It is similar to the Buck-Boost converter, the Cúk converter provides an output voltage that is less than or greater than the input value, but the output voltage polarity is opposite to that of the input voltage. In this project, the output voltage of the proposed converter is less than its input voltage. The simulation results show, that the converter has a capability to supply the load power up to 100W with efficiency is up to 90% under ideal parameters with 0.25 ohm power resistor as its load. The switching frequency of the converter is selected to be 10 kHz so that the stress on MOSFET switches may be minimized with the usage of 0.2 duty cycle. Based on the implementation made, the output of the copper circuit is 3.58V and 11.9A respectively and thus, this have consumed for 42.6% as the chopper efficiency.

Contributor(s): Mohd Noor Azimmi Redzuan - Author Primary Item Type: Final Year Project Identifiers: Accession Number : 875003592 Language: English Subject Keywords: DC chopper, topologies, voltage polarity First presented to the public: 4/1/2010 Original Publication Date: 7/31/2018 Previously Published By: Universiti Sains Malaysia Place Of Publication: School of Electrical & Electronic Engineering Citation: Extents: Number of Pages - 86 License Grantor / Date Granted:   / ( View License ) Date Deposited 2018-07-31 11:27:41.227 Date Last Updated 2019-01-07 11:24:32.9118 Submitter: Nor Hayati Ismail

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