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Mutiara, Piala
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ANALISA PENGARUH PERUBAHAN BEBAN TERHADAP FREKUENSI GENERATOR SATU PHASA Simamora, Antonius; Sinaga, Joslen; Mutiara, Piala; Mariaty, Linda; Sitohang, Rasmi
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol. 7 No. 1 (2023): Journal of Electrical and System Control Engineering
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v7i1.10194

Abstract

Generators are equipment that converts mechanical energy into electrical energy by utilizing the electromagnetic principle in converting its energy, where the mechanical energy can be obtained from prime movers such as diesel engines (PLTD), hydropower (PLTA), gas power (PLTG). , geothermal (PLTPB). Frequency can also be used as a measure of the instantaneous balance between the real power (MW) consumed by consumers (load) and the real power supply from power plants. Setting the excitation current given to the generator so that the generator produces a voltage of 220 volts. electrical systems, generators and components connected with a complete interconnection system to connect several generators and consumers. To supply power from generators to consumers, system reliability is needed, where one of the requirements for an electric power system is said to be reliable if it fulfills the requirements for generating system reliability such as voltage and frequency values, especially in terms of frequency must be within the specified limits (1 % of the standard frequency), where the standard frequency in Indonesia is 50 Hz.
PELAYANAN PRIMA JASA HOTEL CAMBRIDGE MEDAN Mutiara, Piala; Sitohang, Rasmi; Mariaty, Linda; Purba, Johana Sihol Marito; Marpaung, Nalom Dahlan
PKM Maju UDA Vol 5 No 1 (2024): APRIL
Publisher : Lembaga Penelitian dan Pengabdian Pada Masyarakat (LPPM) Universitas Darma Agung (UDA) Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/pkmmajuuda.v5i1.4203

Abstract

Cambridge Hotel Medan adalah salah satu hotel berbintang lima di kota Medan yang berlokasi dipusat kota, di Jalan S.Parman 217 Medan 20152 Sumatera Utara. Pengabdian ini berfokus pada bagaimana tingkat layanan tertinggi untuk para tamu serta mengetahui kebutuhan dan kaingin para tamu atau dengan kata lain layanan prima jasa yang diberikan hotel kepada para tamu ketika tamu check in sampai check out. Penulis menggunakan metode kualitatif deskriptif. Sumber data yang digunakan adalah data primer dan sekunder. Adapun teknik pengumpulan data yang digunakan adalah pengabdian lapangan (wawancara), sampel dipilih dengan menggunakan hasil wawancara diuji dengan triangulasi sumber. Hasil dari pengabdian menunjukkan bahwa kualitas pelayanan prima jasa yang dilakukan Cambridge hotel sudah sangat bagus. Pelayanan prima yang diberikan adalah seluruh pegawai hotel memberikan pelayanan terbaik bagi tamu, adanya promo hotel, adanya resto dan cambaked, adanya fasilitas yang dapat dinikmati baik spa, fitness, kolam renang. Cambridge hotel merupakan hotel pertama yang memiliki aplikasi langsung yaitu Cambridge Membership yang mempermudah tamu dalam memesan hotel, serta terdapat promo jika menjadi member melalui aplikasi tersebut.
ANALISA PENGGUNAAN DAYA LISTRIK MOTOR HOIST DAN MOTOR TROLLEY PADA CONTAINER CRANE Simamora, Antonius Managam; Sitohang, Rasmi; Sinaga, Joslen; Simanullang, Subur; Mutiara, Piala
JURNAL DARMA AGUNG Vol 32 No 3 (2024): JUNI
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v32i3.4438

Abstract

Terminal Peti Kemas memiliki peran yang sangat penting dalam mendorong pertumbuhan ekonomi dan perdagangan, terutama di sektor industri di wilayah barat Indonesia. Permintaan akan layanan pelabuhan yang diproduksi oleh terminal ini menyebabkan peningkatan aktivitas di pelabuhan, yang secara langsung memengaruhi kinerja Container Crane. Alat ini dilengkapi dengan berbagai motor utama seperti motor hoist, motor trolley, motor gantry, dan motor boom. Tujuan dari penelitian ini adalah untuk menganalisis daya yang digunakan oleh motor hoist dan motor trolley saat mengangkat beban peti kemas pada Container Crane (CC). Analisis daya ini terdiri dari dua bagian, yaitu analisis daya motor hoist selama proses angkat (hoist-up) dan analisis daya motor trolley selama proses mundur trolley (trolley-reverse). Penelitian ini dilakukan berdasarkan parameter pengukuran yang tersedia pada sistem Container Crane. Dengan melakukan analisis daya ini, diharapkan dapat dipahami rata-rata daya yang dibutuhkan oleh motor hoist dan trolley dalam menjalankan operasi Container Crane.
PERENCANAAN PERSEDIAAN BAHAN BAKU JUMBO DRAGON ROLL DENGAN METODE MATERIAL REQUIREMENT PLANNING (MRP) DI RESTORAN SUSHI TEI Mariaty, Linda; Mutiara, Piala
Jurnal Sains dan Teknologi ISTP Vol. 20 No. 01 (2023): Desember
Publisher : LPPM ISTP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59637/jsti.v20i01.364

Abstract

To meet consumer demand which often sells out and to maintain public trust in Sushi Tei, Sushi Tei needs to maintain the quality of its food, and the food must always be fresh. Therefore, the author conducted research on supplies at the Sushi Tei restaurant and saw a problem that the food ordered was sometimes sold out. So in this final assignment the researcher conducted research to solve the problems that occurred at the Sushi Tei restaurant. To solve this problem, researchers used the MRP (Master Requirement Planning) method. The results obtained from the research include, the average forecast demand for the Jumbo Dragon Roll menu at the Tei Teuku Daud Sushi Restaurant in the period May 2023 to April 2024 is 342 portions / month. The amount of raw material supplies per month that must be provided to meet demand for Jumbo Dragon Roll during the period May 2023 to April 2024 is: inari rice 17,067 grams/month, seaweed 342 pieces/month, tempura shrimp 683/month, eel 10,240 grams /month, crabstick 1,767 sticks/month, Japanese cucumber 86 sticks/month, avocado 86 pieces/month, fish eggs 6,827 grams/month, mayonnaise sauce 17,067 grams/month.
PERHITUNGAN BREAK EVEN POINT PADA PERUSAHAAN MANUFAKTUR KAYU Mutiara, Piala
Jurnal Sains dan Teknologi ISTP Vol. 20 No. 02 (2024): JANUARI
Publisher : LPPM ISTP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59637/jsti.v20i02.368

Abstract

Nowadays, many companies calculate the costs that occur in a production process. But it is very rare for companies to calculate when a company will return on capital and when a company will experience a loss or profit. The purpose of calculating the Break Even Point (BEP) is to find out how many units are needed to return on capital or how much turnover must be achieved so that the company returns on capital. Data processing is carried out using the Break Even Point calculation method by collecting data in the form of fixed cost data and variable cost data for a production process. From the results of data processing, it is obtained that BEP = 994 units with a price of IDR 278,174,937. The company makes a profit if sales are above the BEP and conversely makes a loss if it is below the BEP.
PERANCANGAN APLIKASI LIGHT DEPENDENT RESISTOR (LDR) PADA PEMBANGKIT LISTRIK TENAGA SURYA UNTUK MENINGKATKAN ENERGI LISTRIK YANG DIHASILKAN SECARA OTOMATIS Simamora, Antonius; Siburian, Jhonson Monang; Mutiara, Piala; Sitohang, Rasmi; Sinaga, Joslen; Sinurat, Fadlah Kaumenni
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 1 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i1.849

Abstract

The purpose of this study is to design an application that utilizes Light Dependent Resistor (LDR) to increase the efficiency of solar power generation systems. The scope of this study includes the use of Light Dependent Resistor (LDR) in optimizing solar power generation systems, energy efficiency analysis, and the effect of changes in light intensity on solar panel performance. The methodology used is the method of data collection (case study) and data analysis obtained from experiments and designing applications using LDR to control the movement mechanism of solar panels to obtain light energy in real-time. The results show that the integration of this sensor can increase energy production by up to 23% compared to conventional fixed systems. This system not only increases the effectiveness of solar power generation but also contributes to reducing maintenance costs and supports sustainable energy practices. The conclusion of the study shows that automatic angle adjustment on solar panels increases energy capacity by 13-19% compared to panels with fixed angles. The average power generated reaches 11.57 watts, higher than 10.07 watts from fixed panels. The use of LDR also increases the intensity of light received.
Desain Inovatif Pembangkit Tenaga Surya untuk Optimalisasi Efesiensi Energi dengan Menggunakkan Teknologi Panel Surya Simanullang, Subur; Simamora, Antonius Managam; Siburian, Jhonson Monang; Sinaga, Joslen; Mutiara, Piala; Sitohang, Rasmi
All Fields of Science Journal Liaison Academia and Sosiety Vol 5, No 2: Juni 2025
Publisher : Lembaga Komunikasi dan Informasi Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58939/afosj-las.v5i2.1136

Abstract

Geografi Indonesia yang kompleks mengakibatkan beberapa wilayah masih belum memiliki listrik. Solusi yang diciptakan adalah sistem pembangkit listrik tenaga surya hibrida 1000 watt. Sistem ini mengandalkan transformasi energi surya menjadi listrik arus searah (DC) melalui panel surya, yang diatur oleh Pengontrol Pengisian Daya Surya (SCR) untuk mempertahankan tegangan pengisian dan beban yang ideal, khususnya hingga maksimum 13,7 V. Konfigurasi ini juga bertujuan untuk mencegah bahaya tegangan tinggi yang dapat merusak komponen seperti beban DC, baterai, dan panel surya itu sendiri. Ketika tegangan panel turun di bawah 12,2 V, pengisian daya otomatis berhenti. Dalam situasi ini, unit Baterai Pelindung Pemutusan Tegangan Rendah (LVD XH-M609) akan memicu relai untuk mengubah sumber pengisian daya ke sumber daya eksternal yang memberikan tegangan 13,67 V, dengan rasio pengisian daya 14%. Ketika tegangan panel meningkat menjadi ≥ 13 V yang menggabungkan tegangan minimum (12,2 V) dan tegangan histeresis (0,9 V) sumber pengisian daya akan kembali ke panel surya. Energi listrik DC diubah menjadi arus bolak-balik (AC) dengan inverter gelombang sinus murni 1000 watt yang beroperasi pada efisiensi 86% untuk memenuhi kebutuhan beban listrik AC.
Co-Authors Fadlah K. Sinurat MARIATY, LINDA Marpaung, Nalom Dahlan Purba, Johana Sihol Marito Siburian, Jhonson Monang Simamora, Antonius Simamora, Antonius Managam SIMANULLANG, SUBUR Sinaga, Joslen Sitohang, Rasmi