ELEKTRIKA- Journal of Electrical Engineering最新文献_第2页

A Compact Metamaterial Dual-band Branch-line Coupler for 5G Applications 一种用于5G应用的紧凑型超材料双频分支线耦合器

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-08-28 DOI: 10.11113/elektrika.v22n2.448

Abdulkadir Bello Shallah, F. Zubir, Mohamd Kamal A. Rahim, M. Hamid, A. K. Vallappil, H. Majid, Z. Yusoff, Abdul Basit

引用次数: 0

Load and Coupling Variations Analysis of Capacitive Power Transfer at 6.78MHz Operating Frequency for Biomedical Implantable Device 6.78MHz工作频率下生物医学植入装置电容性功率传输负载及耦合变化分析

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-08-28 DOI: 10.11113/elektrika.v22n2.450

M. Meor, Y. Yusop, S. Saat, Huzaimah Husin, K. K. Hasan

{"title":"Load and Coupling Variations Analysis of Capacitive Power Transfer at 6.78MHz Operating Frequency for Biomedical Implantable Device","authors":"M. Meor, Y. Yusop, S. Saat, Huzaimah Husin, K. K. Hasan","doi":"10.11113/elektrika.v22n2.450","DOIUrl":"https://doi.org/10.11113/elektrika.v22n2.450","url":null,"abstract":"This paper presents the design and analysis of load and coupling variations for a current Wireless Power Transfer (WPT) technique, known as Capacitive Power Transfer (CPT). Due to its strength, CPT becomes an effective and essential alternative to conservative technique, which is Inductive Power Transfer (IPT). It can compete IPT in industrial demand since it has a small number of component usage, uncomplicated topology, increases electromagnetic interference (EMI) shielding performance and robust to surrounding metallic elements. Class E power amplifier with the presence of π1b matching resonant circuit is applied in this work as a high frequency ac power source since it has the ability to perform dc-to-ac inversion efficiently. It supports the CPT system to attain a maximum power transmission. MATLAB software is used to design and simulate the CPT circuit; and the analysis is made up from the results. This proposed system able to generate 1W of output power by maintaining up to 98% efficiency at 6.78MHz operating frequency for Biomedical Implantable Device application. The analysis of load variation is in the range of 50Ω until 1kΩ; meanwhile for coupling variation is between 1mm to 15mm.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123892661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Off-Grid Photovoltaic-Biogas Hybrid System for an Indonesian Boarding School 印尼寄宿学校离网光伏-沼气混合系统

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-08-28 DOI: 10.11113/elektrika.v22n2.436

A. Rajani, D. M. Said, A. Fudholi, Z. A. Noorden, N. Ahmad, T. D. Atmaja

引用次数: 0

Read Range Investigation of RFID Tag on Human Chest 人体胸部RFID标签的读取范围研究

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-08-28 DOI: 10.11113/elektrika.v22n2.405

Ba-Saleh Ammar Nabil Salem, R. Dewan, O. Ayop, A. Ibrahim

{"title":"Read Range Investigation of RFID Tag on Human Chest","authors":"Ba-Saleh Ammar Nabil Salem, R. Dewan, O. Ayop, A. Ibrahim","doi":"10.11113/elektrika.v22n2.405","DOIUrl":"https://doi.org/10.11113/elektrika.v22n2.405","url":null,"abstract":"Radio Frequency Identification (RFID) technology for automatic identification, tracking, and monitoring of human is in great demand by the healthcare industry. The existence of passive tag with proximity to human body in general, represents an intrinsic challenge because of the high losses of body tissues A commercial passive ultra-high frequency (UHF) RFID tag with 860 MHz-960 MHz operating frequency range is modelled to study and analyze the effect on the read range parameter by placing the RFID tag in proximity to human body model (the chest) with respect to the placement of pocket position of any shirt The body model of the chest is consisting of three layers which are skin, fat and muscle. The commercial RFID tag that has been used for this study was INLAY-9662. The measurement is done on the commercial tag prior to modelling and simulation in the CST. Furthermore, the simulation was carried on two conditions: (1) in free-space, and (2) in proximity to human body. In addition, 1 mm, 3 mm and 10 mm have been set as the gap between the modelled tag and the chest model to examine the impacted read range at different distances. The results obtained have shown some variations when the distances are varied from the human chest. The read range were achieved at 0.5 m, 1.3 m and 2.4 m for 1 mm, 3 mm and 10 mm respectively. This study has shown the capabilities of human body to reduce the efficiency of the read range whenever RFID tags are placed in proximity to human body.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131808076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Trajectory Tracking of a Quadcopter UAV using PID Controller 基于PID控制器的四轴飞行器轨迹跟踪

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-08-28 DOI: 10.11113/elektrika.v22n2.440

A'dilah Baharuddin, Mohd Ariffanan Mohd Basri

{"title":"Trajectory Tracking of a Quadcopter UAV using PID Controller","authors":"A'dilah Baharuddin, Mohd Ariffanan Mohd Basri","doi":"10.11113/elektrika.v22n2.440","DOIUrl":"https://doi.org/10.11113/elektrika.v22n2.440","url":null,"abstract":"UAVs or Drones are aircraft with no onboard pilot to control the flight. They are introduced in a few categories such as single-rotor, multi-rotors, fixed-wing, and hybrid VTOL. As for multirotor drones, quadcopters are the most well-known either commercially or in the research field. Due to its advantages, a quadcopter has been chosen to perform various tasks across various fields such as entertainment, military, meteorological reconnaissance, civil and emergency responses. As the demand for quadcopters has diverged, the required features of quadcopters have also diverged. One of the current features required by quadcopters is the ability to track trajectories. However, due to its nature of non-linearity, under-actuated and unstable, controlling quadcopter for an accurate and stable performance is quite a challenge. Despite the various proposed methods throughout the past decades, PID controller is still used as either the main controller or the base controller in most cases of industrial control, including quadcopter, mainly due to its simplicity and robustness. However, to design a proper PID controller for quadcopter system is a challenge as it defies the control inputs of four with its six degree-of-freedom form, in which six inputs are required to be controlled to ensure a stable and accurate flight. This paper derived a mathematically model of a quadcopter with Newton-Euler’s equation. Some assumptions on the body and structure of the quadcopter are taken into account to make the modelling possible. Then, a manually tuned PID controller is designed to achieve the objective of controlling the operation and stability of the quadcopter during its flight. The designed controller is tested with five different trajectories which are circular, square, lemniscate, zigzag, and spiral. The results show the proposed controller successfully tracks the desired trajectories, which prove PID controller can be used to control a quadcopter.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130422551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D Image Reconstruction Capability of Peripheral On-chip ECT Sensor 外设片上ECT传感器的三维图像重建能力

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-08-28 DOI: 10.11113/elektrika.v22n2.437

Wen Pin Gooi, Leow Pei Ling, Jaysuman Pusppanathan, Hor Xian Feng, Shahrulnizahani Mohammad Din

{"title":"3D Image Reconstruction Capability of Peripheral On-chip ECT Sensor","authors":"Wen Pin Gooi, Leow Pei Ling, Jaysuman Pusppanathan, Hor Xian Feng, Shahrulnizahani Mohammad Din","doi":"10.11113/elektrika.v22n2.437","DOIUrl":"https://doi.org/10.11113/elektrika.v22n2.437","url":null,"abstract":"The miniaturisation of electrical tomography sensors such as EIT has become popular recently and these miniaturised sensors were investigated for 2D and 3D imaging of cells in EIT. Nevertheless, research on miniaturisation of ECT sensor also existed which were based on peripheral electrode sensor which had electrodes arranged on the surface around the sensing chamber. However, the study on the miniature peripheral ECT sensor was limited to 2D image reconstruction and detection of presents of samples in the sensing chamber only and lacked the works on the 3D imaging capability. Therefore, this article investigates the 3D image reconstruction capability of peripheral on-chip ECT sensor through simulation approach by simulating a cube phantom at several test positions in the sensing chamber. Eventually, the 3D and 2D images were reconstructed and the 3D imaging capability of the sensor was characterised qualitatively based on visual inspection of the reconstructed image. The simulation results revealed that the 3D imaging capability of peripheral on-chip ECT sensor was limited to the region where electrodes were present only. However, the 2D reconstructed image results showed that the sensor was able to locate the positions of test phantom in the sensing chamber accurately.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116883840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the Transfer Capability of the Nigerian 330 kV, 58-bus Power System Network using FACTS Devices 尼日利亚330千伏58母线电网FACTS设备传输能力的研究

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-04-28 DOI: 10.11113/elektrika.v22n1.422

I. Nkan, P. Obi, Hassan Natala, O. Okoro

{"title":"Investigation of the Transfer Capability of the Nigerian 330 kV, 58-bus Power System Network using FACTS Devices","authors":"I. Nkan, P. Obi, Hassan Natala, O. Okoro","doi":"10.11113/elektrika.v22n1.422","DOIUrl":"https://doi.org/10.11113/elektrika.v22n1.422","url":null,"abstract":"Over the years, the Nigerian power system is beset with lingering problems, which include severe power losses, as well as very low transfer capability of the transmission network to evacuate power from generating stations to the load at the distribution level. Presently, the Nigerian power industry is undergoing restructuring, especially in the generation and distribution systems. In view of the deregulation of electricity distribution and marketing, the traditional practices of the Nigerian power system are undergoing changes to address the identified problems in the existing power system. Specifically, better utilization of the existing power transmission network to improve on the system transfer capability and minimize cost is one of the key focuses of the deregulation agenda. This work deals with the enhancement of transfer capability of Nigerian 58-bus, 330kV network using FACTS (Flexible Alternating Current Transmission System) devices. FACTS devices are used for controlling transmission voltage, power flow, reducing reactive power losses, and damping of power system oscillations for high power transfer capability. Three FACTS devices; Thyristor Controlled Series Compensator (TCSC), Unified Power Flow Controller (UPFC), and Interline Power Flow Controller (IPFC) were used to investigate the transfer capability of the Nigerian 58-bus power system network. NEPLAN was employed in this work to model the Nigerian 58-bus system and optimally placed the FACTS devices at the weakest buses that were found out through the computation for available transfer capability (ATC) after continuation power flow (CPF) simulation was completed. MATLAB codes were developed and used to calculate power transfer capability of the network without and with FACTS devices. Comparing the three FACTS devices, the results obtained showed that UPFC enhanced the power transfer capability of the network than TCSC and IPFC.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"IA-15 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132625021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Dual Polarization DQPSK ROF System with Duo Binary Precoding and Hybrid Amplification for Effective Hybrid SMF FSO Transmission Medium 有效混合SMF FSO传输介质的双二进制预编码和混合放大双极化DQPSK ROF系统

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-04-28 DOI: 10.11113/elektrika.v22n1.430

Esra Al Bayati, R. Ngah, Nurul Ashikin Binti Daud

{"title":"Dual Polarization DQPSK ROF System with Duo Binary Precoding and Hybrid Amplification for Effective Hybrid SMF FSO Transmission Medium","authors":"Esra Al Bayati, R. Ngah, Nurul Ashikin Binti Daud","doi":"10.11113/elektrika.v22n1.430","DOIUrl":"https://doi.org/10.11113/elektrika.v22n1.430","url":null,"abstract":"This article demonstrates the utilization of a hybrid amplification technique on the transmission part of the proposed hybrid medium transmission system which includes both using Single Mode Fiber (SMF) with 60 km and Free Space Optic (FSO) with a range between 5 km and 25 km. It has included four weather situations with an investigation of the FSO medium-based system performance. The system uses 64 channels based on Dual Polarization-Differential Quadratic Phase Shift Keying (DP-DQPSK) Dense Wavelength Division Multiplexing (DWDM) for the Radio over Fiber (RoF) system using the Duo Binary coding scheme to improve the system efficiency in general and the cross-talk in particular. The investigations will include using the hybrid amplifiers of Erbium Doped Fiber Amplifier (EDFA) and Optical Amplifier (OA) for transmission. The analysis results show that using the hybrid amplification could improve the transmission to reach 25 km for light air case, meanwhile, for light haze, it could reach up to 20 km. Moderate haze could improve transmission efficiency for a distance of 7 km. Finally, for moderate rain situations, the transmission could be further improved to cover a distance of up to 5 km.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"41 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132869568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal Methods for Fault Detection and Classification 故障检测与分类的优化方法

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-04-28 DOI: 10.11113/elektrika.v22n1.439

R. Idris, Nadzir Anas Lim

{"title":"Optimal Methods for Fault Detection and Classification","authors":"R. Idris, Nadzir Anas Lim","doi":"10.11113/elektrika.v22n1.439","DOIUrl":"https://doi.org/10.11113/elektrika.v22n1.439","url":null,"abstract":"Detecting fault in transmission line is very important in order to have a well-functioned power system. This is due to the fact that the system will be distorted if there is fault in the transmission line. Occurrence of fault causes the significant difference in terms of the value of current or voltage in the system. There are a few approaches that can be used in order to detect and classify fault in the transmission line. Two methods of fault detection and classification have been used to be analyzed in order to identify both method accuracy and reliability. The two methods are the Wavelet Transform method and the Fuzzy Logic based method. Both methods show their own advantages and disadvantages after simulation have been done. These methods are later being utilized by combining both to create a better version of fault detection and classification method. In this paper, a combined method of Wavelet Transform and Fuzzy Logic based for fault detection and classification model for power systems is developed and simulated. This combined method is later compared to other method under the same category but different perspective and aspect namely the Radial Basis Function Neural Network. Fuzzy Logic Based method and Radial Basis Function Neural Network falls under Artificial Intelligence category for fault classification method. However, the approach used for both method is significantly different.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114296291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation of Prostate Specific Antigen (PSA) ISFET Sensor with Different Nanostructures 不同纳米结构前列腺特异抗原(PSA) ISFET传感器的模拟

ELEKTRIKA- Journal of Electrical Engineering Pub Date : 2023-04-28 DOI: 10.11113/elektrika.v22n1.407

Lee Shung Mun, Suhana Mohamed Sultan, Nur Afiqah Ab Razak

{"title":"Simulation of Prostate Specific Antigen (PSA) ISFET Sensor with Different Nanostructures","authors":"Lee Shung Mun, Suhana Mohamed Sultan, Nur Afiqah Ab Razak","doi":"10.11113/elektrika.v22n1.407","DOIUrl":"https://doi.org/10.11113/elektrika.v22n1.407","url":null,"abstract":"It is crucial to have early detection of prostate cancer as it is the third most common cancer in men and Prostate Specific Antigen (PSA) is a protein-based biomarker commonly used to achieve the purpose. Besides, ISFET integrated with nanostructures such as nanowire and nanosphere has been the focus of research for disease diagnosis. Simulations are carried out in Biosensor Lab to investigate the performance of ISFET with planar, nanowire and nanosphere structures in detecting PSA. Using nanostructured ISFET in disease diagnosis is demonstrated by comparing the performance with the surface-to-volume (S/V) ratio. The nanosphere biosensor with the highest S/V ratio showed the lowest settling time when there was a low analyte concentration. Its settling time is 788 times lower than planar and almost 3 times lower than nanowire ISFET. In addition, the time needed for a planar biosensor to capture M of PSA is 5 times slower than a nanowire biosensor and nanosphere biosensor. In signal-to-noise ratio (SNR), nanosphere ISFET exhibits the highest value compared to other structures. These results indicate that a higher S/V ratio contributed to better performance in detecting PSA.","PeriodicalId":312612,"journal":{"name":"ELEKTRIKA- Journal of Electrical Engineering","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116030751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0