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All Journal TRANSIENT: Jurnal Ilmiah Teknik Elektro Indonesian Journal of Energy Bhuvana: Journal of Global Studies
Abdurrahman, Muhammad Hanif
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Humanities Electrical & Electronics Engineering Energy Social Sciences

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DESAIN DAN IMPLEMENTASI SYNCHRONOUS REFERENCE FRAME-PHASE LOCKED LOOP (SRF-PLL) UNTUK TEGANGAN SATU FASE MENGGUNAKAN DSPIC30F4011 Abdurrahman, Muhammad Hanif; Setiawan, Iwan; Handoko, Susatyo
Transient: Jurnal Ilmiah Teknik Elektro TRANSIENT, VOL. 7, NO. 1, MARET 2018
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1119.597 KB) | DOI: 10.14710/transient.7.1.145-151

Abstract

Fase, magnitude, dan frekuensi dari tegangan listrik merupakan informasi penting dalam pengoprasian sistem jaringan. Berdasarkan kebutuhan penerapan koneksi pembangkit dengan grid side converter (GSC), GSC harus dapat dioperasikan meski pun jaringan mengalami interferensi. Untuk mencapai tujuan tersebut, dibutuhkan metode yang dapat mendeteksi gangguan jaringan secara cepat, yaitu dengan menggunakan metode Phase Locked Loop (PLL) yang dapat menyediakan informasi tegangan jaringan. Dibandingkan dengan algoritma PLL yang lainnya, Synchronous Reference Frame-Phase Locked Loop (SRF-PLL) bisa dikatakan merupakan yang paling populer dalam penerapannya. Dalam Penelitian ini, dibuat sebuah desain untuk pengaplikasian SRF-PLL untuk tegangan satu fase menggunakan mikrokontroler 16-bit dsPIC30f4011 dengan kontroler PI, dimana kontroler PI diharapkan akan membuat sistem memiliki respon yang cepat terhadap perubahan yang terjadi, dikarenakan tujuan dari kebutuhan PLL itu sendiri, sehingga akan didapatkan hasil data tegangan jaringan berupa, magnitude, frekuensi dan fase. Hasilnya, pengkondisi sinyal dapat mengatur sinyal tegangan jaringan agar dapat terabca oleh ADC mikrokontroler, sehingga magnitude, frekuensi, dan fase dari tegangan jaringan berhasil dibaca oleh algoritma SRF-PLL yang ditampilkan pada oscilloscope dengan bantuan DAC 8bit.
Modeling of Hydrogen Adsorption Phenomenon in Amorphous Silica Using Molecular Dynamics Method Abdurrahman, Muhammad Hanif; Fatriansyah, J. F.; Dhaneswara, D.; Kuskendrianto, F. R.; Yusuf, M. B.
Indonesian Journal of Energy Vol. 3 No. 1 (2020): Indonesian Journal of Energy
Publisher : Purnomo Yusgiantoro Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33116/ije.v3i1.44

Abstract

Hydrogen is one of the future source energy because it has environmentally friendly. However, there are still some problems in the storage method of hydrogen. In several studies, it was found that Silicon based material is a promising candidate as a hydrogen storage medium. In this study, the effect of various temperature and pressure to the adsorption of hydrogen on amorphous silica with molecular dynamics simulation using Lennard-Jones potential. In this simulation, the temperature that i used are 233, 253, 273 and 293 K with pressure at each temperature are 1, 2, 5, 10, and 15 atm. The simulations had successfully visualized and indicate that amorphous silica has a good hydrogen storage capability where temperature and pressure affect the amount of hydrogen adsorbed. At low temperature (233 K), the hydrogen concentrations are relatively high than at higher temperature. The best result of hydrogen capacity is 0.048116% that occurred at high pressure (15 atm) with low temperature (233 K) condition.*The paper has been selected from a collaboration with IPST and 7th ICFCHT 2019 for a conference entitled "Innovation in Polymer Science and Technology (IPST) 2019 in Conjunction with 7th International Conference on Fuel Cell and Hydrogen Technology (ICFCHT 2019) on October 16th - 19th at The Stones Hotel Legian, Bali, Indonesia"
MITIGASI DAN STRATEGI INDONESIA DALAM MENGHADAPI TARIF TRUMP JILID KEDUA Miftahudin, Erwin; Kalam, Rizalul; Abdurrahman, Muhammad Hanif
BHUVANA: Journal of Global Studies Vol. 3 No. 2 (2025)
Publisher : Department of International Relations Universitas Satya Negara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59408/bjgs.v3i2.231

Abstract

In the contemporary era, economic power has become a key pillar in determining a country’s strategic position within the global political order. International trade is now facing serious challenges due to the implementation of protectionist policies by the United States (US) under the second term of President Donald Trump. The US has imposed high tariffs on several of its trading partners, including Indonesia. This phenomenon reflects a significant shift in US economic policy, which now leans more toward neo-mercantilism. As a result, Indonesia faces several major risks, including declining competitiveness, export levels, investment flows, a potential wave of layoffs, and economic slowdown. This study analyzes the impact of the US’s second wave of protectionism, particularly on Indonesia’s manufacturing industry, from the perspective of international political economy using a qualitative approach. Furthermore, the study evaluates strategic measures that the Indonesian government can adopt, including renegotiation with the US, expansion into non-traditional markets, and strengthening national competitiveness. The findings of this study are expected to serve as a reference for the government in formulating resilient and adaptive strategies in response to the dynamics of global protectionism.
Co-Authors Dhaneswara, D. Fatriansyah, J. F. Iwan Setiawan Kalam, Rizalul Kuskendrianto, F. R. Miftahudin, Erwin Susatyo Handoko Yusuf, M. B.