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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) JURNAL NASIONAL TEKNIK ELEKTRO Proceeding of the Electrical Engineering Computer Science and Informatics Emerging Science Journal EPI International Journal of Engineering Journal of Energy and Electrical Engineering (JEEE) International Journal of Science, Engineering and Information Technology Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Khayam, Umar
Institut Teknologi Bandung
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Journal : International Journal of Electrical and Computer Engineering

 1 
Experimental and Simulation Studies of Thermal Distribution on Modified Connector of Li-Ion Battery for Electric Vehicles Application Agus Risdiyanto; Umar Khayam; Noviadi A. Rachman; Maulana Arifin
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 5: October 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.393 KB) | DOI: 10.11591/ijece.v6i5.pp2064-2072

Abstract

One of the several failure cases in electric vehicle could be occured at the Lithium-ion (Li-ion) battery connectors when loaded by high current. This failure caused by bad contact of connectors so that the contact resistance increase and lead to high power losses, overheating, and it can even cause a fire hazard. This paper presents a thermal distributions of  Li-ion battery connectors on different coating material in relation to the value of contact resistance. There were two test samples of modeled: copper connection without coating and copper connection with silver coating. Each sample was loaded by the DC current of 350A, and temperature at the connection was measured until steady state condition reached and simulated by Solidwork software. The results show that the temperature at the inside contact area was higher than the outside contact area of connection that appears caused by higher of the contact resistance. Both measurement and simulation results have same tendency that copper connection with silver coating having lower contact resistance, lower maximum temperature, and lower losses about 32 % than copper connection without  coating. Silver coating can be considered as other alternative to prevent overheating, high losses, and failure in Li-ion battery connector.
Effect of silica nanofiller in cross-linked polyethylene as electrical tree growth inhibitor Moh Nazar, Nazatul Shiema; Syazwani Mansor, Noor; Khayam, Umar; Asiah Muhamad, Nor; Jaafar Mustapha, Mariatti; Izzani Mohamed, Amir; Mohd Jamil, Mohamad Kamarol
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 3: June 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i3.pp2256-2263

Abstract

One of the main phenomena that contributes to the non-success of cable insulation made of cross-linked polyethylene (XLPE) is electrical treeing. To improve the XPLE cable insulation, the use of nanofiller has been introduced. Adding the nanofiller in the based composite offers better cable lifetime and resistance to deal with the cable failure. One of the potential nanofillers that can increase the insulation performance of XLPE cable is silica nanofiller. To this extent, the studies on silica nanofiller in XLPE are focusing on the impulse breakdown strength, dielectric loss, permittivity, space charge, alternating current (AC), and partial discharge. The studies reveal that the dielectric properties of the XLPE nanocomposite have significant improvement. Therefore, this work investigates the effect of various concentrations of silica nanofiller in XLPE composite as electrical tree inhibitor. The concentrations of silica nanofiller in XLPE were 0.25 wt%, 0.5 wt%, 0.75 wt%, 1.0 wt%, 1.25 wt%, 1.5 wt%, and 1.75 wt%. The silica nanofillers have 96%-99% purity, 20-30 nm sizes and the shapes are spherical. As a result, the XLPE composite containing 1.5 wt% silica nanofiller demonstrate higher tree inception voltage and detaining the tree propagation speed, which could be considered as an inhibitor medium of electrical tree growth.
Co-Authors Adang Suwandi Ahmad Agus Risdiyanto Arief Basuki Arpan Zaeni Arwin Datumaya Wahyudi Sumari Bachri, Karel Octavianus Bambang Anggoro Soedjarno Dedi Tri Laksono, Dedi Tri Deni Tri Laksono Deni Tri Laksono Deny Viviantoro Fatoni, Fendi Imam Fendi Imam Fatoni Hamdani, Yuda M. Hamdani, Yuda Muhammad Hanalde Andre Izzani Mohamed, Amir Jaafar Mustapha, Mariatti Maulana Arifin Michael Stevano Sinurat Moh Nazar, Nazatul Shiema Mohd Jamil, Mohamad Kamarol Monika Faswia Fahmi Monika Faswia Fahmi Naohiro Hozumi Naohiro Hozumi Neris Peri Ardiansyah Nhet Ra Nor Asiah Muhamad Noviadi A. Rachman Nurdiansyah, Rian Pratama, Rizki Wahyu Rachmawati, . Sinurat, Michael Stevano Suwarno Suwarno Syazwani Mansor, Noor Tomohiro Kawashima Trinurkalid Sumarwoto Ummul Khair Viviantoro, Deny Yoshinobu Murakami Yuda Muhammad Hamdani Yushan Yushan Yushan, Yushan Zaeni, Arpan