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Design of a 3x dc-dc converter for plug-in hybrid vehicle (phev)

Design of a 3x dc-dc converter for plug-in hybrid vehicle (phev) / Foo Yi Wern
Reka bentuk untuk penukar arus terus-arus terus(AT-AT) antara bateri dan bas penyonsang AT kekal sebagai cabran kepada syarikat kereta diberikan ruang automotif yang terhad. Penukar AT-AT tradisional yang digunakan dalam HEV mempunyai beberapa kelemahan seperti keperluan induktor yang besar dan tekanan komponen atas suis kuasa yang tinggi. Topologi pelbagai aras direka dan dicadangkan untuk mengatasi masalah ini. Tesis ini membentangkan sebuah penukar tidak terpencil AT-AT kapasitorterbang yang berperingkat empat pada papan litar bercetak. Kitaran tugas penukar ditetapkan pada 2/3 dan frekuensi penukarannya ialah 8 kHz. Nisbah peningkatan tiga kali ganda (3X) voltan input berjaya dicapai. Prototaip yang direka mampu mencapai efisiensi 76% pada kuasa output 28W. Prinsip-prinsip operasi dan keputusan eksperimen juga dibentangkan di dalam tesis ini. Keptusan menunjukkan bahawa prototaip ini berfungsi sepenuhnya sehingga kira-kira 25W. Ia boleh diperhatikan bahawa voltan maksimum merentasi suis kuasa adalah hanya 1/3 daripada voltan output. Induktor berteras udara yang kecil adalah mencukupi untuk menghadkan riak arus input untuk membolehkan peranti untuk dijalankan dengan selamat dan berkesan. _______________________________________________________________________________________________________ The design for the dc-dc converter interfacing the battery and the inverter dc bus of the Hybrid Electric Vehicle (HEV) and Plug-in Hybrid Electric Vehicle (PHEV) remains a challenge to car companies given the restrictive automotive space. The traditional DC-DC converter has several drawbacks such as large inductance requirement and high voltage ratings across the switches. Additional level topologies are designed and proposed to overcome these. This thesis presents a non-isolated unidirectional four-level flying-capacitor DC-DC converter on printed circuit board. The duty cycle of the converter is set to be 2/3 and the switching frequency is 8 kHz. The boost ratio of three times (3X) the input voltage is achieved. The developed prototype is capable of achieving efficiency of 76% at 28W output power. The operating principles and experimental results are also presented in this thesis. The result shows that the prototype is fully functional for a range of up to about 25W. It can also be observed experimentally that the peak voltage across the power switches is only 1/3 of the output voltage during steady state. The small air core inductor is sufficient to limit the input current ripple to enable devices to conduct safely and effectively.
Contributor(s):
Foo Yi Wern - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875005040
Language:
English
Subject Keywords:
(HEV); (PHEV); DC-DC
First presented to the public:
6/1/2013
Original Publication Date:
11/14/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 56
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-12-02 16:05:36.214
Submitter:
Mohd Jasnizam Mohd Salleh

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