Indonesia Conference Directory

Corresponding Author
Pronay Kumar Chakrobarty

Institutions
Centre for Hybrid Automotive Research and Green Energy, University of Windsor, ON, Canada – N9B 3P4

Abstract
Fuel cells are being widely implemented as energy sources for various applications including hybrid electric vehicles as they offer lower emissions and improve the environmental conditions. However, due to their low output voltage and wide variation from no-load to full-load, a DC-DC converter is required to interface the fuel cell with the load. The major challenges associated with such DC-DC converters are to obtain high voltage gains and high efficiency for the overall performance of the fuel cell hybrid vehicle system. Therefore, it is of primary importance to select a suitable converter topology and flexible controls system which can capable of satisfying all the performance requirements. Thus, this paper presents a comparative review of DC –DC converters in power conditioning for fuel cell hybrid electric vehicles with discussion on recent trends in converter control strategies.

Keywords
Converter, Control strategy, Electric Vehicle, Fuel Cell, Topology

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/r3Ptca4WGBUT

Corresponding Author
Chico Hermanu Brillianto Apribowo

Institutions
Department of Electrical Engineering, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, Indonesia

National Center for Sustainable Transportation Technology
Bandung, Indonesia

Abstract
In this research, the design of close loop BLDC motor speed control was designed with several simulation test conditions and also discuss the differences of boost converter with Fuzzy control and boost converter without Fuzzy control. The BLDC motor specifications used in this research are 3 phase, constant voltage is 80 V_peak L-L / krpm and the moment of inertia is 0.000553 J (kgm2). The specifications of the solar were Canadian CS5T 130M with a maximum power = 129W. The test results on the boost converter without using Fuzzy controls have fluctuating voltages, and the output voltage is ± 34 V. Whereas when using Fuzzy controls, the output voltage is stable and the voltage is ± 135 V. In simulation conditions 5 with Fuzzy control circuits have THD values amounting to 1.72%, which corresponds to the standards specified by IEEE for voltages below 1 kV = <5%. The simulation test results with several conditions have made a difference in the results of the motor speed response. Based on the results of the simulation test, it is known that the speed control with the Fuzzy control circuit has better results compared to the open loop circuit and PID control.

Keywords
Close Loop Control, BLDC Motor, Boost Converter, Fuzzy Control, THD

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/yu9a2mZCXMLe

Corresponding Author
Trias Andromeda

Institutions
Universitas Diponegoro

Abstract
Abstract— Electric Vehicle (EV) cars have developed very rapidly. In line with a growing number on the streets, the need for electric vehicle battery charging stations is increasingly expected. In community, there are three levels of battery charging stations that have been implemented. Level 1 is a charger with a 120 Vac source and it is the slowest charger level. Level 2 is a familiar charger found in homes and garages use a 240 Vac source. While level 3 is a Direct Current Fast Charger (DCFC) charger which is urgently needed for electric vehicle (EV). This paper will present the results of research on charging a Lithium Iron Phosphate (LFP) battery using a DCFC buck converter. The converter is dedicated to be a charger of the EV. The result shows that the proposed converter has good performance because it has successfully charged the battery pack at 4 Ampere in the initial stage and it turned into full charge stage in 30 minutes at stable voltage at 14.4 Volt.

Keywords
EV, Electric Car, DCFC, Buck Converter, LFP Battery

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/HVEYXLuNqbBA

Corresponding Author
Vicky Mudeng

Institutions
Institut Teknologi Kalimantan, Institut Teknologi Sepuluh Nopember

Abstract
Cockroft-Walton (CW) is a voltage multiplier (VM) circuit with an alternating current (AC) input to generate a direct current (DC) output. The CW circuit consists of several stages. Each stage, there are two diodes and capacitors to shift the AC input to be DC output. The maximum output of CW is the multiplication of two and number of stages, then the multiplied result times the peak voltage of AC input to obtain the DC voltage. However, the DC output contains ripple voltage. Therefore, the work within this study discusses five stages CWVM to ensure that it can effective as a power supply for the electric vehicle. We develop CWVM with the output of the multiplication between two and input peak voltage. To reduce the ripple voltage, we implement a capacitor filter in the simulation for verifying the results. Also, we simulate the output voltage by considering the results for each stage. The results indicate that the developed CWVM is reasonable to be a power supply for the electric vehicle.

Keywords
Cockroft-Walton, voltage multiplier, power supply

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/JDFGBctvhdPX

Corresponding Author
Chico Hermanu Brillianto Apribowo

Institutions
Department of Electrical Engineering
Universitas Sebelas Maret
Surakarta, Indonesia

National Center for Sustainable Transportation Technology
Bandung, Indonesia

Abstract
The general problem of operational power transformer was appearing in both thermal and electrical failure. Most of the power transformer usually used insulator oil that was functioning as cooler and to dissolve its hazardous gas in order not to circulate independently. Identifying type and number of gas concentration, which was dissolved in oil could provide information about the indication of failure that occurs in the transformer. Method for identifying and analyzing dissolved gas in the oil was called dissolved gas analysis (dga). Procedure for oil sampling of testing dga with a method of morgan schaffer was using syringe. In the use of syringe, after taking oil sample into syringe and then syringe was extracted to separate components of dissolved gas. Utilizing syringe in the process of extraction was not maximal since it had to be manually done the process of extraction for each syringe. In this research, it was done in making automatic syringe shaker, which could do an extraction of transformer oil to extract dissolved gas in the transformer oil automatically. This research would also determine the time and speed variable to obtain optimizing syringe shaker. This instrument used a dc motor as a driving source. Based on data, which was obtained, the percentage of extraction level that was obtained with using automatic syringe shaker transformer oil was smaller compared with the manual process and it had an error level of 0.124%. The timer test result of the length of extraction time showed that an error percentage of approximately 0.004%.

Keywords
dissolved gas analysis, syringe shaker, transformer oil

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/LGJhdDqNZzWF

Corresponding Author
Chico Hermanu Brillianto Apribowo

Institutions
Department of Electrical Engineering
Universitas Sebelas Maret
Surakarta, Indonesia

National Center for Sustainable Transportation Technology
Bandung, Indonesia

Abstract
Electrical energy is the key to the development of human civilization, it causes an increase in electricity production using fossil fuels. This causes the emergence of the need for electricity generation with renewable energy sources. This research discusses the improvement of efficiency in photovoltaic cells (PV) by using the floating method and also the cooling method, especially, passive heatsink cooling. Tests carried out measures the performance of PV panels by measuring the influence of floating and cooling methods. The data shows that the increase in power is 30.54% with floating method while using passive heatsink cooling only increase power output by 14.31%. The temperature in the PV panel tends to increase with increasing intensity of solar radiation. In addition, both method resulted in increase of the PV panel temperature by 6.42% and 0.60% for floating method and passive heatsink cooling respectively.

Keywords
photovoltaic cell, PV cooling, floating, temperature, efficiency.

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/6hc4aNPXB9eK

Corresponding Author
M Rivandi Fadli

Institutions
Electrical Power Engineering
School of Electrical Engineering and Informatics
Bandung Institute of Technology
Bandung, Indonesia

Abstract
Brushless DC (BLDC) motors have the advantage in high reliability compared with conventional DC motors because of the absent of the brushes. BLDC requires switching with the help of power electronic components which is 6 pulse inverter. One of the methods is field orientation control (FOC) by controlling id and iq. By controlling id and iq independently, Maximum Torque Per Ampere ratio (MPTA) to minimize the current can be achieved so that it can improve motor efficiency. In this paper, the FOC method applied in 120kW BLDC motor is investigated. From simulation result, when the torque is higher, then response of the motor is faster to achieve nominal rotational speed. Otherwise, lower torque that applied to the load cause higher ripple. The speed of BLDC motor could be control using control loop from torque control. In this paper, high torque ripple caused by difficulties of PI control setting, high load (100 Nm), and trapezoidal back-EMF of the BLDC.

Keywords
BLDC, FOC, Torque Control, Speed Control

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/Y6XmU7zvpTkG

Corresponding Author
Faris Hafizh Makarim

Institutions
Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*faris.hafizh.makarim[at]students.itb.ac.id

Abstract
This paper presents an optimization of multiphase cascaded DC-DC boost converters to maximize the efficiency. Multiphase cascaded DC-DC boost converters are converters that have a very high gain level and a zero input current ripple. The paper starts with derivation of loss equation in the converter and the result is used for optimization process. It is found that the optimum phase number is three for the first stage and one for the second stage converter. The first stage converter is operated at fixed duty cycle of 0.66. The output voltage control is delegated to the second stage. Experimental results are included in this paper.

Keywords
Multiphase, boost converter, cascade, optimization

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/YA63B8ZxmG2u

Corresponding Author
Bagus Juliyanto

Institutions
a) School of Electrical Engineering and Informatics, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*bagus.juliyanto[at]students.itb.ac.id
b)National Center for Sustainable Transportation Technology (NCSTT), Bandung Institute of Technology, Bandung, Indonesia
c) State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, 100044, Beijing, China

Abstract
Now a days, the non-orthogonal multiple access is one of proposed scheme for fifth generation (5G), it is called sparse code modulation (SCMA) with low complexity massage passing algorithm (MPA). To show how the performance of SCMA, the MPA system could be adopted to get near with maximum likelihood (ML) detection performance under less-complexity. The MPA algorithm is performed by the specific codebook in SCMA transceiver scheme with many types of MPA, such as SD-MPA, DS-MPA, and PM-MPA. From the three specific model DS-MPA shows better performance in low SNR, while the SD-MPA should get near result with DS-MPA in different condition. As known that the typical 5G use cases identified by ITU-T and adopted by 3GPP allowed SCMA for massive machine type communication (mMTC), SCMA can be one of this solution with low complexity scheme. It has some promising function, such as relaxes orthogonality, resistance to multi-user interference, enabler of simplified scheduling, and enabler of grants-free transmission.

Keywords
MPA; SCMA; low-complexity; performance

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/jF9pfNhVtAvX

Corresponding Author
Chico Hermanu Brillianto Apribowo

Institutions
Department of Electrical Engineering, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, Indonesia

National Center for Sustainable Transportation Technology
Bandung, Indonesia

Abstract
Demand for electricity is increasing rapidly, the consequence of this is a threat to the stability of the electrical system, one of which is the voltage stability. FACTS or Flexible Alternating Current Transmission System is electronic equipment that is able to regulate electric power transmission that can be used to overcome stability problems. This research will analyze the use of Static Var Compensator (SVC) as one of the equipment from FACTS to overcome the stability of the most critical buses by using the 500 kV Java-Bali electricity system using PSAT. Then the stability of the voltage is observed using the help of the PV curve which can show the value of the voltage conditions in each operating condition. SVC installation on the Java-Bali electricity system of 500 kV obtained an increase in length λ on the Pedan Bus which is equal to 0.233 p.u. (6.01) then on the Tasikmalaya Bus the addition of length λ is 0.0986 p.u. (2.55%) and on the Mandarican Bus the addition of length λ is 0.1228 p.u. (3.17%).

Keywords
Static Var Compensator (SVC), PV Curve, Voltage Stability

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/DdwG34CZBu9r