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The Effect of Capacitors on Frequency Response Amplifier IC TDA2030 as Band-Pass Filter
Full text linkAmplifier is used as an input waveform amplifier by increasing the voltage using an IC power supply. TDA2030 is an amplifier IC with an Output Transformer Less (OTL) type. The amplifier can operate with a voltage of 12 Volt, 1.5 Ampere. The circuit design process uses Proteus software with a universal reference to the TDA2030 datasheet. Proteus experimental results can be seen by simulating the frequency response. Frequency response tests were carried out to obtain filter used for assemble the circuit to produce an ideal Band-pass filter. Then using Digital Oscilloscope, we can observe difference between waves getting emphasis and those they are not. The objective of this study is to determine the value of capacitor C3 with a good (frequency cut low). Changing value of C3 can produce the desired BPF output. In the experiment, capacitor C3 0.1uf obtained emphasizes low frequencies between 0-250 Hz. Values of C3 with good BPF 47uf and 100uf because the output produced good bass frequency and is suitable for use because the emphasis occurs between 0-5 Hz. On the amplifier IC TDA2030 has made, capacitor C3 with values 47uf and 100uf ideal to be used as BPF because the filter works in a balanced way
Front Matter
No full textELKHA is a scientific journal regularly published twice a year by the Department of Electrical Engineering, Faculty of Engineering, Universitas Tanjungpura. The Papers published in this journal include Control Engineering, Electronics, Power Systems, Telecommunications, Informatics, Distribution Systems, and Industrial Engineering. The article can be in the form of a research or a review paper. Papers to be published should meet the ELKHA's template. An example is attached on the last page of this journal or can be found on ELKHA's website. Since 2022, the language used in this journal has been in English to have more global readers. The publisher calls for your contributions by submitting a manuscript that has never been published previously or under consideration by another publisher, and it will be double-blind reviewed. This journal is welcome to the sponsors who want to advertise by contacting the ELKHA's team
Design and Build Miniature Production System (MPS) on Handling Station and Sort Station Using Cascade Controller
Full text linkThe sorting process based on color generally still uses human power. This has a weakness, i.e., human judgements that are subjective and inconsistent, and work that is done repeatedly can cause saturation. So, the purpose of this research is to create a sorting system in Miniature Production System (MPS) that can select objects based on color using a TCS3200 color sensor. The novelty of this research is that it can detect primary and secondary colors of an object. The process of moving objects from the storage unit to the sorting section uses a pneumatic cylinder which acts as a handling station. The handling station uses 3 cylinders to move the vertical, horizontal axes and clamp the workpiece. The movement of each cylinder is regulated by a Programmable Logic Controller (PLC) where the ladder diagram is based on the step diagram. Simplification of the step diagram is achieved by using a cascade controller. The testing results shows that this system can sort objects by color with a success rate of 86%. Tests on the handling station show that the average workpiece removal process takes 11.30 seconds with air pressure of 4-5 bar in the cylinder
Portable Pico-hydro Power Plant with Archimedes Screw Turbine in Pelangi Reservoir of Universitas Islam Indonesia
Full text linkIndonesia has a lot of potential to build hydroelectric power plants because of its size and abundance of water. As in the Islamic University of Indonesia, there is a Pelangi Reservoir which has the potential to develop a pico-hydro power plant. A portable pico hydro system is needed to generate electricity properly. In this study, the pico hydro generator system was designed starting from the turbine, pulley, generator, controller, battery to the load. In the process, the voltage and current generated by this portable pico hydro generator system will be observed. By using a screw turbine, the team designed the system to optimally utilize Pelangi Reservoir water flow. The DC generator was chosen as a converter of kinetic energy into electrical energy because with low rotation, and a stable DC generator produces direct electricity. Several changes from design to reality were made so that the system could work according to field conditions and not damage the ecosystem around Pelangi reservoir. According to the test results, the current pico-hydro system at Pelangi Reservoir UII can generate a maximum power of 8.544 watts and an average discharge of 7.1532 L/second. The power can increase if the water flow has a larger discharge. If the large discharge flow is balanced by the robustness of the turbine and system. At low conditions, the system can charge a battery with a capacity of 12 volts 4 Ah with a water flow rate of 4.807 L/second, which is 9.9 volts to 12.2 volts in 36 minutes. The efficiency of hydroelectric power generation (Pico-hydro) then increases to 16.71%. The system can generate 86.49 watts of electricity at 1500 rpm on the generator
Fuzzy-PI Control for Buck Converter Output Voltage Stabilizer
Full text linkThis paper presents a hybrid control between Fuzzy and PI to solve the problem of stability of the output voltage on the Buck Converter, especially in small power applications. This paper makes two main contributions. The first is the design of a simple Fuzzy-PI output voltage control design of a buck converter in Matlab. The second is the result of comparing the response of the traditional PI control system with the designed Fuzzy-PI hybrid control. The method used is a simulation with 3 stages. This process starts from the design of the Fuzzy-PI controller, simulation test with 3 scenarios, and verification with a comparison, namely the PI controller. The purpose of the simulation is to see the response of the system to changes in input voltage, reference voltage, and load resistance. Based on the test results, it is known that the Fuzzy-PI control is better than the PI control in maintaining the stability of the buck converter output voltage at every parameter change
Designing Air-Cored Axial Flux Permanent Magnet Generator with Double Rotor
Full text linkThe development of renewable energy is carried out to reduce the use of fossil energy, which is decreasing in existence, increasing in price, and having a very long recovery cycle. One of the uses of technology to support renewable energy development is a synchronous machine that can be used to utilize wind and water energy. One type of synchronous machine that is widely used today is the radial flux machine. However, there is a saturation point in their development. Axial flux machines also called disc type machines, are an alternative to radial flux machines due to their compact shape and high-power density. Axial flux machines can be operated as small to medium-scale power plants. Besides that, they are ideal for low-speed applications. An axial flux permanent magnet (AFPM) generator is designed and built in this study. This generator design consists of a dual rotor with twelve permanent magnets and a single stator with nine coils. The primary material used for the stator and rotor is acrylic, while the permanent magnet uses neodymium N52. It is necessary to know the stator and rotor parameters such as distribution factor (kd), pitch factor (kp), and winding factor (kw) for designing the AFMP generator. The AFPM generator is designed to produce a phase voltage of 4.03 V at a nominal speed of 500 r/min. Based on the measurement results, it was found that the phase voltages at a rotating speed of 500 r/min for each phase are VR = 2.94 V, VS = 2.97 V, and VT = 2.95 V. There are differences in the test results and the design. It can be caused by design simplicity that does not consider magnetic saturation and internal reactance, which cannot be ignored but is not included in the calculation
Application of LoRa Technology at Distribution Substation Using Peak Load Data
Full text linkThe process of monitoring and measuring transformers at PT. PLN (Persero) at the distribution substation BR 391 is done manually during peak load hours in the field, usually between 18.00-22.00 local time. Distribution substations sometimes have different peak load hours, in the morning, afternoon, evening, and sometimes during the day. Taking into account the different peak load hours at different substations, the current peak load hours are still determined by human. It is not effective, to overcome this, in this study it is planned to design a monitor and data storage using LoRa technology to monitor transformers at distribution substations all the time and has been tested at distribution substation BR 391 Jl. Wijaya Kusuma Medan. From the observations, peak load hours occur between 18.00-22.00 WIB and the highest peak load with power per phase: R=20,513,40 watts, S=15,350.06 watts, and T=21,323.91 watts. It can be seen that the highest average daily power consumption is at 20.00 WIB. More load usage occurs at night and the highest load is in the T phase. The increase in load affects the temperature increase of the cable up to 42.6
Modernization of Dense Wavelength Division Multiplexing (DWDM) Route Surabaya-Bangil To Increase Optical Network Capacity
Full text linkAlong with the increasing demand for data networks, on the Java island network traffic, especially the Surabaya - Bangil link, the operator increases the channel capacity by modernizing DWDM (Dense Wavelength Division Multiplexing) technology in its transmission equipment. At that time, the DWDM technology was DWDM 6800 with a maximum capacity of one port that could only accommodate 10 Gbit/s, while using DWDM 9800, the maximum capacity of one port could accommodate up to 100 Gbit/s. Modernization of DWDM 6800 to DWDM 9800 technology uses the cross-connect method so that it does not require many costs and can be done within a short duration of time so that network performance can be adequately maintained. As a result, after modernization, the network has sufficient reserves to cover demand for the next few years
MPPT using Firefly Algorithm for Cuk Converter in Photovoltaic
Full text linkHigh intensity of sunlight in Indonesia (up to 10 hours per day) is a great opportunity to be utilized as renewable energy by absorbing solar energy using solar panels. The absorbed solar energy is channeled into a DC/DC converter circuit with a Cuk converter topology so that it can be used with small current ripples. The Maximum Power Point Tracker (MPPT) method is needed to get optimum power from solar panels. To optimize the MPPT value, its performance is supported by using the Firefly Algorithm (FFA). This study focused on observing changes in FFA parameters, i.e., firefly populations and random parameters to generate optimal power on Cuk converter topology with MPPT method. FFA embedded in microcontrollers has successfully optimized MPPT performance with the best response obtained in the firefly population = 25, absorption coefficient (γ) = 0.5, random value (α) = 0.6, iteration = 10, with an optimal power of 25.7 Watts
Optimizing the Potential of Solar Energy PT PJB UP Muara Karang Rooftop Area Using HelioScope
Full text linkYear after year, there has been a rise in use of electrical power. The industrial, home, commercial, and public sectors accounted for 234,617.88 GWh of PLN's electrical energy sales in 2018. Meanwhile, the household, industrial, commercial, social sector, government office buildings, and public street lighting consumed 2,857.06 GWh of electrical energy in DKI Jakarta. The majority of the energy resources required by interconnected networks are fossil (coal). As a result, a future alternative to fossil fuels is required. Optimizing solar energy that may be employed in urban settings is one of the uses of renewable energy. The building sector consumes up to 40% of the total annual energy. By installing a renewable energy system on the roof of PT PJB Muara Karang power plant unit. The solar power plant energy potential on the roof of PT PJB UP Muara Karang administration building was simulated with HelioScope and using Quantitative Descriptive Method to maximize the rooftop area by installing 143 solar panel modules. which is capable of supplying 75.11 percent of the energy needs at PT. PJB UP Muara Karang.