No abstract

The Solar Electric Power Generator (SEPG) has been designed having capacity of 320 Watt peak (Wp) and storage capacity 600 ampere-hour (A H) or equivalent with 7,200 Watt-hour (Wh) aimed for a substitution of peak load in a household sector. Modul and energy storage were designed to apply directly in certain period during a day time. Experiments have been done on an open circuit to examine the SEPG, which given a maximum and output voltage is 19.58 VDC and 18.01 VDC respectively. On the other hand the experiment with load test with battery bank given 18.29 VDC, otherwise regulator output voltage during bank battery charging is 13.8 VDC. Based on the simulation which has been done for the household sector having connecting power of 900V A supplied by the Government Electric Board with average peak load consumption of 1,300 Wh, it is proved approximately of 67.9 percent could be substituted by SEPG.

Environment deterioration, energy shortage and ever rising fuel price makes green transportation a necessity. Being an alternative to fossil fuels vehicles, Electric Vehicles (EVs) exemplify the most popular approach of electrification to a substantial portion of the transportation sector. Recently, usage of renewable energy resources (RERs) is also increased because of its economic and environmental concerns over traditional resources in the new electric power systems. Variable reliability aspects of RERs increase the complexity of safe and stable operation of grid. Therefore, EV will further increase this uncertainty and variability when being connected randomly to the grid in large scale. This paper not only highlights the EV’s related challenges/issues and presents a brief comprehensive review of recent researches. But, also demonstrates a simulation methodology for analyzing the impact of EVs under various charging scenarios on an independent distribution grid in presence of RERs. The results show the creation of new peak loads which in some cases may exceed the grid capacity and threaten the stability and reliability.

Serai wangi adalah alternatif dari sekian bahan baku untuk menghasilkan minyak atsiri. Minyak atsiri dapat berfungsi sebagai campuran kosmetik, aromaterapi, obat-obatan, suplemen, dan lainnya. Kegiatan pengabdian masyarakat ini bertujuan untuk menerapkan inovasi alat penyulingan minyak atsiri dalam bentuk produk teknologi tepat guna untuk meningkatkan hasil produksi minyak atsiri bagi petani di Desa Siabu, Kecamatan Salo, Kabupaten Kampar, Provinsi Riau. Masyarakat juga dapat mengetahui dan memahami, serta meningkatkan mutu rendemen agar kualitas minyak menjadi lebih baik sekaligus bemanfaat bagi masyarakat. Metode pelaksanaan terdiri dari survei lapangan, analisis situasi, rancangan alat, pemasangan alat, dan pemantauan alat pengumpulan data, dan analisis sesuai dengan teori-teori yang dikutip untuk memperoleh informasi. Dalam penyulingan minyak serai wangi terdiri dari tiga cara yakni; penyulingan menggunakan sistem rebusan, penyulingan menggunakan air dan uap, penyulingan menggunakan uap langsung. Hasil penyulingan serai wangi menjadi minyak atsiri dengan kapasitas 130kg per-ketel dapat menghasilkan minyak atsiri 1,3 liter