Novel Centralized Control Battery Operation, on Microgrids to Supply The Load Priority

Priority loads, in micro grid is preferred load to always get the power supply. Battery function, in micro grid, in addition, functioning as a storage energy, it also serves as a stabilizer of network, due to intermittent of energy sources, both solar and from wind. As energy storage, battery is intended to supply energy when other sources of energy is not available. So far, the mechanism of battery operation, distributed on each generation, so that when operation standalone, battery capacity is not in optimal level. In this study, proposed, method of centralized control battery operation, which would regulate the use of battery operation, especially to supply the load priority. So that the power supply from the battery to the load priority, it would be optimal in optimal level when other sources are no longer, by utilizing parameters weather and load forecast

Prototype-Design of Soil Movement Detector Using IoT Hands-on Application

The landslide disaster that killed people occurred due to public ignorance of the type of soil prone to landslides. Several efforts have been made to create prototype tools for soil movement detection. However, researchers using the Internet of Things (IoT) technology are still limited. The IoT allows for the transmission of data over an internet connection, is always connected, offers remote control capabilities, and data sharing. All of this served as the prototype design of foundation for the soil movement detection. A light-based proximity sensor is used in system, and its output is represented as a movement of the soil on an inclined plane. F furthermore, the data used as input for the NodeMCU ESP8266 microcontroller is linked to the internet. The output is an HMI in the form of an LCD monitor that displays the soil movement measurement. The simulation of disturbances in an inclined plane is done differently depending on the frequency and duration. Moreover, monitoring is carried out by transferring processed data to the Blynk platform, which is subsequently shown in real time via the Blynk Android application. The test results of the tool used three distinct samples, as well as varied disturbance frequencies and durations. With the soil samples, the biggest movement data was 5cm achieved at a disturbance frequency of 5Hz and 40 seconds duration. The largest movement data for sand samples was 11cm at a disturbance frequency of 3Hz and 50 seconds duration, followed by largest movement data for sand soil mixture samples was 8cm at a disturbance frequency of 5Hz and 50 seconds duration. People should not reside on slopes, especially if the soil's primary component is sand.Bencana longsor yang memakan korban jiwa tersebut terjadi karena ketidaktahuan masyarakat akan jenis tanah yang rawan longsor. Beberapa upaya telah dilakukan untuk membuat prototipe alat pendeteksi gerakan tanah. Namun, peneliti yang menggunakan teknologi Internet of Things (IoT) masih terbatas. IoT memungkinkan transmisi data melalui koneksi internet, selalu terhubung, menawarkan kemampuan kendali jarak jauh, dan berbagi data. Semua ini berfungsi sebagai prototipe desain pondasi untuk deteksi gerakan tanah. Sensor jarak berbasis cahaya digunakan dalam sistem, dan outputnya direpresentasikan sebagai pergerakan tanah pada bidang miring. Selanjutnya data yang digunakan sebagai input mikrokontroler NodeMCU ESP8266 terhubung dengan internet. Outputnya berupa HMI berupa monitor LCD yang menampilkan hasil pengukuran pergerakan tanah. Simulasi gangguan pada bidang miring dilakukan secara berbeda tergantung pada frekuensi dan durasi. Selain itu, pemantauan dilakukan dengan mentransfer data yang diproses ke platform Blynk, yang selanjutnya ditampilkan secara real time melalui aplikasi Blynk Android. Hasil pengujian alat menggunakan tiga sampel yang berbeda, serta frekuensi dan durasi gangguan yang bervariasi. Dengan sampel tanah, data pergerakan terbesar adalah 5cm yang dicapai pada frekuensi gangguan 5Hz dan durasi 40 detik. Data pergerakan terbesar untuk sampel pasir adalah 11cm pada frekuensi gangguan 3Hz dan durasi 50 detik, diikuti oleh data pergerakan terbesar untuk sampel campuran tanah pasir adalah 8cm pada frekuensi gangguan 5Hz dan durasi 50 detik. Orang tidak boleh tinggal di lereng, terutama jika komponen utama tanahnya adalah pasir

Power Management of A Microgrid with A Distributed Energy Storage in Grid Connected and Islanded Modes

Control and operation of a microgrid can be operated at grid connected or islanded modes. In this paper, the microgrid consists of a Diesel, PV modules with a distributed energy storage system, loads, and inverter. The purpose of power management is to control the stability of the system to cope with changes in load and interconnection with other networks. The stability of the microgrid is also obtained by setting the load connected to the system. Power management is also controls the operation of each plant based on the condition of the energy sources used as a source of generation. In islanded mode, the main goal of power management is to stabilize the system, in terms of frequency and voltage. In grid connected mode, typical objectives are to minimize the price of energy import at the point of common coupling (PCC)

Edge-rounded Magnet Poles for Reducing the Torque Ripple on a Radial Flux Inset Permanent Magnet Generator

This study reports a novel strategy for minimizing torque ripple in a radial flux inset permanent magnet (RFIPM) generator by using a geometric modification of the magnet poles. We simulate the design of three different types of edge-rounded magnet (ERM) poles using finite element method magnetics (FEMM) software for a 16 poles and 24 slots RFIPM generator. We found that the edge-rounding of magnet poles significantly lowered the torque ripple of the generator with a reduction of about 74% (torque ripple of 7.76%). In addition, the modified RFIPM generator exhibited enhanced flux density uniformity in the air-gap of the generator (up to ~ 48.8%), leading to a smoother line of flux density

Rancang Bangun Sistem dan Kontrol Penggunaan Air PDAM secara Realtime Berbasis Wemos dan IoT

Air bersih sangat penting bagi kehidupan manusia. Penggunaan air bersih yang disuplai dari PDAM harus tetap dalam pengawasan karena menyangkut hajat hidup orang banyak. Sistem ini dibuat dengan tujuan untuk mengetahui dan mengendalikan jumlah air bersih yang terpakai. Pemantauan serta pengendalian penggunan air bersih dapat dilakukan dari jarak jauh karena sistem berbasis IoT (Internet of Things). Perangkat IoT yang digunakan antara lain MIT App inventor untuk membuat aplikasi Android, Firebase dan WeMos D1 ESP8266. Terdapat dua sensor utama pada sistem yaitu sensor pH dan flowmeter dengan tujuan masisng-masing untuk karakterisasi dan mengetahui volume air. Pengguna menetapkan nilai setpoint volume air yang akan digunakan selanjutnya pada aplikasi akan menampilkan data berupa tulisan ”usage” atau penggunaan beserta tarif air dalam satuan Rupiah. Hasil pengujian lainnya diterapkan pada sensor pH yang mana pada kasus ini ditujukan untuk karakterisasi berbagai macam fluida dengan pH yang beragam. Sensor pH yang digunakan sangat tepat diterapkan untuk tujuan pemantauan kualitas air bersih sehingga nilai derajat keasaman pun ditampilkan pada layar aplikasi. Nilai error rata-rata antara volume air aktual dengan volume air sesuai setpoint (penetapan) adalah sebesar 1,29%. Meskipun nilai eror tersebut tergolong kecil namun kedepannya harus bisa semakin mendekati error sama dengan nol