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A. Grummy Wailanduw
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Surabaya Kampus UNESA Ketintang, Surabaya
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Control & Systems Engineering Dentistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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DIGITAL INNOVATION IN AUTOMOTIVE EDUCATION : IMPROVING COLLABORATION SKILL OF STUDENT USING INTERACTIVE FLIPBOOK Faisal Anas Kunesa; Warju Warju; A. Grummy Wailanduw; Hamid Ramadhan Nur
LEARNING : Jurnal Inovasi Penelitian Pendidikan dan Pembelajaran Vol. 6 No. 2 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/learning.v6i2.9194

Abstract

  Students in the twenty-first century need to be able to work together effectively and be actively involved in their own education. Creating interactive learning material based on flipbooks is one way to bolster these abilities. The purpose of this research is to investigate how students' collaborative abilities are impacted by the use of flipbook media and to document their reactions to the created materials. The researchers in this study used a quasi experimental (group posstest design), which meant that only one set of students received the instructional materials (flipbooks) and the associated activities. An observation sheet for teamwork abilities and a questionnaire for student feedback made up the study tools. After using flipbook media, students cooperation abilities significantly improved, as shown by a significance value of 0.000 < 0.05 in the comparative test on collaboration skills. In addition, the reliability test yielded a Cronbach's Alpha score of 0.846, reflecting strong reliability, and the validity test showed that all ten questionnaire questions had correlation coefficients higher than 0.361, proving that all items were valid. Evident from these results, the flipbook medium was well-received by the student. Thus, the created flipbook-based learning material is well-received and useful for improving students teamwork abilities and receives positive responses, making it suitable for use as an interactive learning medium in twenty-first century learning.   ABSTRAK Siswa di abad ke-21 perlu mampu bekerja sama secara efektif dan terlibat aktif dalam pendidikan mereka sendiri. Membuat materi pembelajaran interaktif berbasis flipbook adalah salah satu cara untuk meningkatkan kemampuan ini. Tujuan penelitian ini adalah untuk menyelidiki bagaimana kemampuan kolaborasi siswa dipengaruhi oleh penggunaan media flipbook dan untuk mendokumentasikan reaksi mereka terhadap materi yang dibuat. Para peneliti dalam studi ini menggunakan desain kuasi eksperimental (desain posttest kelompok), yang berarti hanya satu kelompok siswa yang menerima materi pembelajaran (flipbook) dan aktivitas terkait. Lembar observasi untuk kemampuan kerja tim dan kuesioner untuk umpan balik siswa merupakan alat penelitian. Setelah menggunakan media flipbook, kemampuan kerja sama siswa meningkat secara signifikan, seperti yang ditunjukkan oleh nilai signifikansi 0,000 < 0,05 dalam uji komparatif pada keterampilan kolaborasi. Selain itu, uji reliabilitas menghasilkan skor Alpha Cronbach sebesar 0,846, yang mencerminkan reliabilitas yang kuat, dan uji validitas menunjukkan bahwa semua sepuluh pertanyaan kuesioner memiliki koefisien korelasi lebih tinggi dari 0,361, membuktikan bahwa semua item valid. Terbukti dari hasil ini, media flipbook diterima dengan baik oleh siswa. Dengan demikian, materi pembelajaran berbasis flipbook yang dibuat diterima dengan baik dan bermanfaat untuk meningkatkan kemampuan kerja tim siswa serta mendapat respons positif, sehingga cocok digunakan sebagai media pembelajaran interaktif dalam pembelajaran abad ke-21.
INTEGRATION OF RENEWABLE ENERGY OF SOLAR PV AND UTILITY PLN GRID FOR THE OPTIMAL CHARGING OF ELECTRIC VEHICLES THE RESIDENTIAL SCALE Ansori, Aris; Adiwibowo, Priyo Heru; Siregar, Indra Herlamba; Wailanduw, Grummy; Anwar, Saiful
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 10 No. 3 (2026): Volume 10, Nomor 3, June 2026
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v10i3.56016

Abstract

This study proposes and evaluates an off-grid hybrid electric vehicle (EV) charging system that integrates a 5 kWp solar photovoltaic (PV) array, a 5.5 kW PLN grid connection, and a 12 kWh battery energy storage system controlled by an automatic transfer switch (ATS). The system is designed to maximize solar PV utilization while minimizing dependence on the PLN grid during peak demand periods, thereby reducing carbon emissions, electricity consumption, and charging costs. Experimental testing was conducted using two EV types: a Viar NX electric motorcycle (1.338 kWh battery capacity) and a Wuling Air EV Long Range electric car (26.7 kWh battery capacity). Both vehicles were charged from 30% to 100% state of charge under different operating conditions. Energy generation from the PV system, battery storage performance, and PLN grid contribution were monitored using kWh meters and data loggers. Performance evaluation considered energy production, electricity cost savings, and economic feasibility. Results indicate that the PV system generated an average of 12.38 kWh/day for EV charging. During the dry season, monthly PV generation ranged from 368.40 to 383.78 kWh, while production declined to approximately 286.75 kWh during the rainy season because of reduced solar irradiation. The battery storage and PLN grid effectively compensated for low PV output, ensuring uninterrupted charging. Solar PV supplied approximately 48.06% of the total EV charging energy demand, with charging performance strongly influenced by daytime charging schedules and favorable weather conditions. These findings confirm the technical and economic feasibility of residential-scale hybrid solar PV-based EV charging systems.
Optimizing Performance of Electric Vehicle Charging Systems Using Solar PV Tree Models Aris Ansori; Priyo Heru Adiwibowo; Indra Herlamba Siregar; Grummy Wailanduw; Saiful Anwar; Edy Herianto Majlan
Research in Education, Technology, and Multiculture Vol 5, No 3 (2026): Research in Education, Technology, and Multiculture
Publisher : Institute of Multidisciplinary Research and Community Service

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61436/rietm/v5i3.pp280-292

Abstract

The transition to electric vehicles in the transportation sector has had a positive impact on reducing carbon emissions. However, the availability of electricity from renewable energy sources to charge electric vehicles (EVs) remains very limited in both rural and urban areas. The abundant potential of renewable energy sources, such as solar energy, presents challenges in their application as a power source for charging electric vehicles. This study aims to design and analyze the performance of electric vehicle charging using a solar PV tree model. The solar PV installation uses a 152.4 mm diameter iron pipe, with four solar PVs installed in a circle at 90° intervals and a tilt angle of 15°. Eight solar PV trees are installed in a row on the side of the road in the city of Surabaya, geographically located at latitude south 7°9′-7°21′ and longitude east 112°36′-112°54′. The solar PV tree performance measurement method uses IEC 61724-1. The measured electrical parameters consist of voltage, current, power, and solar PV energy efficiency. Electrical energy measurement is divided into two measurements: electrical energy directly used to charge electric vehicles using a kWh meter, and electrical energy stored in energy storage batteries. Solar PV performance testing uses two types of EV loads: an electric car with a charging capacity of 37.9 kWh and an electric bicycle with a charging capacity of 1.75 kWh. Solar PV testing with a tree model can increase sunlight capture with a leaf-like installation model, and it is easy to place in a park or along the roadside. A solar PV system with a capacity of 8 kWp can produce an average of 18.9718 kWh/day, with an efficiency of 2.63% when the sky is clear and sunlight lasts 8 hours. This solar power plant can charge electric bicycles with 1.22 kWh from a full capacity of 1.75 kWh, and electric cars with 14.31 kWh from a full capacity of 37.9 kWh, with an energy loss of approximately 11.5% during charging. Meanwhile, in terms of economic feasibility, with an electricity price of IDR 2,950/kWh, charging electric vehicles (EVs) is economically feasible with a Benefit Cost Ratio (BCR) of 1.23. The solar power plant's investment capital will be returned in eleven years and two months.Keywords: Solar PV trees, EV charging, Electric vehicles, Renewable energy.
Co-Authors , NURILANWAR , SUYETNO adi, muhammad sasmito AGUNG PRIJO BUDIJONO Agung Wahana Putra Ahmad Saepuddin Ahmad Saepuddin Aisyah Endah Palupi Akhmad Hafizh Ainur Rasyid Anovan Fadhil Muhammad Aris Ansori Aris Ansori Aris Ansori Aris Purwanto AW, Priyo Heru Bellina Yunitasari Budihardjo Achmadi Hasyim Denny Wijaya Edy Herianto Majlan ENDRA MUSTAFA, AHMAD FAHMI, WILDAN Faisal Anas Kunesa HAFID ABDULLAH, AHMAD HAFIZH AINUR RASYID, AKHMAD Hamid Ramadhan Nur Hanna Zakiyya I Gusti Putu Asto Buditjahjanto I Made Arsana I Made Arsana I Wayan Susila Ihfi Dzuhriyanul Musthofa Ika Nurjannah Indra Herlamba Siregar Indra Herlamba Siregar Indra Herlamba Siregar KHUSNUL HIDAYAT, AHMAD Kunesa, Faisal Anas LUTFARIDA AGUSTIN, ANIS Luthfiyah Nurlaela MARITA, DONA Matondang, Pahottua Mediatrix Tu'baran MOCHAMAD ARIF IRFAI Muhaji Muhaji Muhaji Muhammad Effendy Novi Handayani Nur, Hamid Ramadhan Priyo Heru Adiwibowo Priyo Heru Adiwibowo Priyo Heru AW Putra, Agung Wahana RIANTO, ACHMAD Rommy Mochamad Ramdhani Saiful Anwar Saiful Anwar Sari, Heni Musvita SATRIYAS ILYAS Subarzah Triyogi Yuwono Wafi, Hibatul WARJU Wawan Aries Widodo Zuhri, Mochamad Saifudin