REDUKSI HARMONISA MENGGUNAKAN TAPIS DAYA AKTIF BERBASIS SYNCHROUNOUS REFERENCE FRAME DQ PADA SISTEM DAYA TIGA FASA

Mutu listrik yang bagus memiliki ciri berbentuk sinusoida, kontinu, dan handal terhadap gangguan. Penggunaan perangkat elektronika daya dapat menurunkan kualitas sistem tenaga. Penyebabnya adalah arus harmonisa pada sisi beban mengintervensi arus listrik pada sisi sumber pasokan daya. Arus harmonisa ini menjadi masalah utama dalam sistem distribusi listrik sehingga diperlukan langkah antisipasi untuk meredam kehadiran harmonisa di dalam sistem tenaga. Penelitian ini bertujuan menyajikan tapis daya aktif paralel untuk menurunkan Total harmonic Distortion (THD) pada sistem tenaga listrik melalui sebuah pemodelan simulasi. Beberapa peneliti telah melakukan riset dengan hasil yang masih bervariasi dalam menurunkan THD, dan pada umumnya nilai THD yang diperoleh berkisar pada nilai 5%. Pada penelitian ini, untuk menurunkan THD secara teknis adalah dengan menyuntikan arus kompensasi ke jala menggunakan metode synchronous d-q reference. Bentuk gelombang arus kompensasi ini dibuat sama dengan arus harmonisa beban namun berbeda fasa 1800. Histerisis Current Control digunakan untuk membangun pulsa penyalaan rangkaian Voltage Spurce Inverter. Pemodelan sistem tapis daya aktif paralel dibangun menggunakan tools Matlab Simulink. Hasil simulasi memperlihatkan nilai indeks THD sebelum diinjeksi sebesar 30,67%, dan setelah diinjeksi turun menjadi 2,37%. Nilai THD ini sesuai dengan standar IEEE 519 sehingga dapat disimpulkan bahwa pemodelan ini layak dibangun untuk di implementasikan pada sebuah sistem tenaga

Prototype Smart Car Mecanum Wheel Fire Extinguisher Based On Esp 32 Cam With Bluetooth Combination

The development of microcontroller technology has been implemented in the robotics industry, particularly in performing tasks that are risky for living beings, especially humans. In this context, a wheeled smart car robot can automatically extinguish fires. The fire extinguishing system is taken over by the robot's system when fire or heat is detected, and the robot's controller activates the extinguishing system, spraying water at the fire point. The ESP 32 CAM microcontroller serves as the processing and controlling unit, handling data and displaying real-time camera images to ensure accurate fire extinguishing. Additionally, a mecanum wheel drive mechanism is added to enhance the robot's movement flexibility

Designing an Android-Based E-Marketplace System as Pekalongan Batik Trade Facility

The development of online shop in this globalization era has progressed very rapidly, especially E-Marketplace. E-Marketplace is the most popular kind of online shop because of the guaranteed security by providing the intermediatery so customers do not need to be afraid to make a transaction without having to meet in person. International Batik Center (IBC) as one of the batik shopping areas in Pekalongan which provides place for more than 200 SMEs has a similar concept with E-Marketplace. IBC itself is not applying online business transactions at this moment so the marketing of SMEs products at IBC is limited in Pekalongan. To overcome this problem, an E-Marketplace system comprised of several sub systems will be designed. This research focuses on android-based sales sub-system. Design method used in this research is ICONIX Process. The purpose of this research is to build an android- based E-Marketplace system that can be used by customers as a medium to conduct online transactions. With E-Marketplace system, it is expected that all party in it, which are IBC, SMEs, and customers, will get a lot of benefits compared to the conventional market. In particular, this design is also expected to provide benefits for customers to simplify and speed up the transaction process.  Perkembangan online shop di era globalisasi sekarang ini memiliki kemajuan yang sangat pesat khususnya E-Marketplace. E-Marketplace merupakan tipe online shop yang paling populer dikarenakan keamanan yang terjamin dengan adanya perantara sehingga customer tidak perlu takut untuk bertransaksi tanpa harus bertatap muka secara langsung. International Batik Center (IBC) sebagai salah satu tempat perbelanjaan batik di Pekalongan menyediakan lahan untuk lebih dari 200 UKM memiliki konsep yang serupa dengan E-Marketplace. IBC sendiri saat ini belum menerapkan transaksi bisnis secara online sehingga membuat pemasaran produk-produk UKM di IBC hanya sebatas di daerah pekalongan saja. Untuk mengatasi permasalahan tersebut, dikembangkan suatu sistem E-Marketplace yang terdiri dari beberapa sub sistem. Penelitian ini berfokus pada sub sistem penjualan berbasis android. Metodologi perancangan yang digunakan dalam penelitian ini adalah ICONIX Process. Tujuan dari penelitian ini adalah membangun suatu sistem E-Marketplace berbasis android yang akan digunakan oleh customer sebagai media untuk melakukan transaksi secara online. Dengan adanya sistem E-Marketplace ini diharapkan seluruh pelaku di dalamnya baik IBC, UKM, dan customer akan memperoleh banyak manfaat dibandingkan dengan pasar konvensional. Secara khusus perancangan ini juga diharapkan dapat memberikan manfaat bagi customer untuk mempermudah dan mempercepat proses transaksi

DESIGN OF A MINIATURE SINGLE-PHASE TRANSMISSION SYSTEM ON ELECTRIC POWER SYSTEMS

The miniature transmission system is part of the electric power system that functions as a channeler of electrical power from the power generation system to the distribution system through substations.  The electrical power is flowed by a copper conductor that has good conductivity. Transmission lines are installed in the air using towers as support for conducting cables. This miniature transmission system works on a small scale and serves to explain how the real transmission system works. The purpose of designing this tool is to test the magnitude of the voltage drop and power loss on each line. The line voltage drop can be obtained by calculating the voltage difference on the send and receive side of the transmission line. Meanwhile, to find the power loss on each line is to find the value of the conducting resistance and current on each of its lines

Performance Comparison Modeling Between Single-phase Cycloconverters and Three-phase Cycloconverters Using Matlab Simulink Tools

This paper presents a performance comparison of a single-phase AC to AC converter (cycloconverter) and a three-phase converter circuit which divides the input wave frequency (fin) into a variable frequency with the frequency value of the AC output voltage waveform (alternating current) (f, fin/2, fin/3, fin/4, fin/5, fin/6, fin/7, fin/8, fin/9, fin/10. Cycloconvertor switches are built using a diode and a thyristor device. This research was conducted by modeling each cycloconverter circuit using Matlab Simulink tools. Modeling simulation parameters to be analyzed include the output waveform RMS (root mean square) value, frequency value, and Total Harmonic Distortion (THD) index for each wave. The output frequency voltage waveform of cycloconverter is affected by the variation of the trigger signal of the P-side (positive) converter and the N (negative) converter side switch. Simulation results show that adjusting the firing pulse width of the P converter and the N converter will produce an output voltage wave that has an index value of THD, Vrms, and form factor for each diode and thyristor cycloconverter circuit

Single Phase Power Factor Improvement Based Instantaneous Power P Q Theorm

This paper presents how to harmonic disturbance reduce on single phase power system. One of the most popular method is harmonic signal extraction with instantaneous power p q theorm. This algorithm implemented to harmonic cencellation by active power filter circuit be paralled with the non linier load. This filter generates of current compensation that are injected into the grid to improve power quality. This Filter is built by an inverter circuit that consists of a mosfet switch array and capasitor mounted on DC link side. Two types of loads are resitive inductive and resistive capasitive produce of current source wave form that close pure sinusoid. Simulation results show the THD index fell to the level of 2.7% in accordance with IEEE 519 standard rules which states that the harmonics content of the power system may occur below 4%, indicating that the power system can be categorized as having good quality