Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168510
R. W. Purnamaningsih, N. R. Poespawati, T. Abuzairi, S. Rahardjo, M. Hamidah, E. Dogheche
GaN-based structures have attracted many researchers in developing photonic devices. These semiconductor structures can operate at high temperatures and high-power levels due to their mechanical hardness. So far, optical splitters design based on Y-junction splitters are widely used on the various material structure. The problem of these structures is radiation loss at the junction area. In this paper, we study the effect of various waveguide parameters on GaN-based S-bend Y-junction optical power divider. The design consists of three sections: linear rectangular rib waveguide, parabolic taper and two S-bend sine branches with the total length of 1000μm. We use optical beam propagation methods (BPM) to obtain the characteristic of the guided wave to calculate the field propagation through the structure as a function of waveguide parameters, such as branching angle and input wavelength. All simulations are carried out using the OptiBPM software. From the simulation results, it shows that to maintain 90% transmitted power, the branching angle for the design should be at the range of 0.5–1.5°. It is also demonstrated that the transmitted power almost stable through the wavelength range from 1.5 up to 1.6 μm with an average of power loss at about 0.35 dB. The simulation results presented can be applied for future GaN Y-junction based waveguide photonic devices design.
{"title":"The effect of waveguide parameters on gan based S-bend Y-junction optical power divider","authors":"R. W. Purnamaningsih, N. R. Poespawati, T. Abuzairi, S. Rahardjo, M. Hamidah, E. Dogheche","doi":"10.1109/QIR.2017.8168510","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168510","url":null,"abstract":"GaN-based structures have attracted many researchers in developing photonic devices. These semiconductor structures can operate at high temperatures and high-power levels due to their mechanical hardness. So far, optical splitters design based on Y-junction splitters are widely used on the various material structure. The problem of these structures is radiation loss at the junction area. In this paper, we study the effect of various waveguide parameters on GaN-based S-bend Y-junction optical power divider. The design consists of three sections: linear rectangular rib waveguide, parabolic taper and two S-bend sine branches with the total length of 1000μm. We use optical beam propagation methods (BPM) to obtain the characteristic of the guided wave to calculate the field propagation through the structure as a function of waveguide parameters, such as branching angle and input wavelength. All simulations are carried out using the OptiBPM software. From the simulation results, it shows that to maintain 90% transmitted power, the branching angle for the design should be at the range of 0.5–1.5°. It is also demonstrated that the transmitted power almost stable through the wavelength range from 1.5 up to 1.6 μm with an average of power loss at about 0.35 dB. The simulation results presented can be applied for future GaN Y-junction based waveguide photonic devices design.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124550573","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}
Inverters in back to back (B2B) connection are utilized to convert the voltage and frequency of the power source to another format. Typical application of inverters is the wind power system. This study presents a B2B inverter for equal voltage and frequency format conversion in which one inverter works to get power from the grid to charge the DC capacitor and another inverter returns most of the active power back to the grid and retain a few powers to maintain the DC-link voltage. The power grid affords only the power loss of the inverters, which benefits the test of the inverter rated above 10kW under general distribution line. A proportional-resonant (PR) controller in a stationary frame in place of a proportional-integral (PI) controller in a synchronous frame was adopted to condition the B2B inverter AC current for grid connection due to the advantages such as instantaneous tracking capability as well as low-cost computational resources. To mitigate the startup transient for grid connection, the instantaneous grid voltage was feedforwarded to the inverter voltage command. The B2B inverter was run according to the proposed control strategy under various conditions such as the reactive power control and the active and reactive power controls. Experimental results show that the power returns to the power grid is close to originally put in and the proposed B2B inverter can be tested under the distribution line with the power capability over 10kW.
{"title":"Design and control of a 10kw three-phase grid-tied back to back inverter","authors":"Woei-Luen Chen, Chun-Yuan Chen, I-Chyn Wey, Yu-Ping Chou","doi":"10.1109/QIR.2017.8168497","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168497","url":null,"abstract":"Inverters in back to back (B2B) connection are utilized to convert the voltage and frequency of the power source to another format. Typical application of inverters is the wind power system. This study presents a B2B inverter for equal voltage and frequency format conversion in which one inverter works to get power from the grid to charge the DC capacitor and another inverter returns most of the active power back to the grid and retain a few powers to maintain the DC-link voltage. The power grid affords only the power loss of the inverters, which benefits the test of the inverter rated above 10kW under general distribution line. A proportional-resonant (PR) controller in a stationary frame in place of a proportional-integral (PI) controller in a synchronous frame was adopted to condition the B2B inverter AC current for grid connection due to the advantages such as instantaneous tracking capability as well as low-cost computational resources. To mitigate the startup transient for grid connection, the instantaneous grid voltage was feedforwarded to the inverter voltage command. The B2B inverter was run according to the proposed control strategy under various conditions such as the reactive power control and the active and reactive power controls. Experimental results show that the power returns to the power grid is close to originally put in and the proposed B2B inverter can be tested under the distribution line with the power capability over 10kW.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117298008","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168535
I. Pribadi, M. Suryanegara
This paper aims to propose regulatory recommendations for IoT smart-health care service, by using the method of Privacy Impact Assessment (PIA). We utilize data from a relevant IoT smart-health care project in Indonesia. On structuring the final regulatory recommendations, we have conducted in-depth interview to the stake holders of Indonesian IoT smart-health care service. The results show that there are 5 aspects that need to be set in the proposed regulations, i.e. security compliance, device security, secure communications, virtualization security, and application security. In each of that aspect, we have built specific recommendation to ensure IoT service provider giving the best service without decreasing comfort of private information protection.
{"title":"Regulatory recommendations for IoT smart-health care services by using privacy impact assessment (PIA)","authors":"I. Pribadi, M. Suryanegara","doi":"10.1109/QIR.2017.8168535","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168535","url":null,"abstract":"This paper aims to propose regulatory recommendations for IoT smart-health care service, by using the method of Privacy Impact Assessment (PIA). We utilize data from a relevant IoT smart-health care project in Indonesia. On structuring the final regulatory recommendations, we have conducted in-depth interview to the stake holders of Indonesian IoT smart-health care service. The results show that there are 5 aspects that need to be set in the proposed regulations, i.e. security compliance, device security, secure communications, virtualization security, and application security. In each of that aspect, we have built specific recommendation to ensure IoT service provider giving the best service without decreasing comfort of private information protection.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116702492","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168454
C. N. Karimah, P. R. Wigajatri, T. Abuzairi, N. R. Poespawati
Solar cells design as an independent supply for biosensor Field Effect Transistor (bioFET) is required to overcome electricity supply. Integrating bioFET with solar cells generates some benefits that include efficiency, low costs, and environmental friendly. In the design of solar cells, the bifacial structure of Hetero-junction Intrinsic Thin layer (HIT) was selected, and the optimization on the structure was carried out with the help of AFORS-HET software. The optimization of such a structure was undertaken by laying the intrinsic thin layers on both sides of the substrate or Transparent Conductive Oxides (TCO) that were placed on the front and back sides of the cell. In order to minimize the recombination, a back-surface field (BSF) was also put in the rear cell of the structure. Research on bifacial HIT structure needs to be done to select a solar cells structure that is most suitable with the voltage required by the bioFET. There are five structures modeling had done to have suitable structure using AFORS-HET. The entire five structures had been simulated on equilibrium mode, and they generally have shown to possess a band alignment type II, namely staggered heterojunction. The simulation results in equilibrium mode obtained one structure which the smallest ΔEC and ΔEV among the other four structures, that is TCO / a-Si:H(p) / a-Si:H(i) / c-Si(n) / a-Si:H(i) / a-Si:H(n+) / TCO / Al with ΔEC and ΔEV, 0.15006798 eV and 0.445920 eV respectively. This 2nd structure also has a smallest barrier in ΦBn= 0.6791392 eV and ΦBp= 0.08314 eV, respectively. The built-in potential of the 2nd structure is 1.13 V. This structure has JSC=0.083 A/cm2 and VOC = 0.313 V. The deviation between built-in potential and VOC is realize in 0.817. The maximum current and maximum voltage are Jm = 0,076 A/cm2 and Vm = 0,25 V respectively, so the maximum power of this structure is 0.019 Watt/cm2. Therefore the 2nd structure is the most appropriate structure to fulfill the bioFET supply.
{"title":"Bifacial heterojunction intrinsic thin layer solar cells as a bioFET supply","authors":"C. N. Karimah, P. R. Wigajatri, T. Abuzairi, N. R. Poespawati","doi":"10.1109/QIR.2017.8168454","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168454","url":null,"abstract":"Solar cells design as an independent supply for biosensor Field Effect Transistor (bioFET) is required to overcome electricity supply. Integrating bioFET with solar cells generates some benefits that include efficiency, low costs, and environmental friendly. In the design of solar cells, the bifacial structure of Hetero-junction Intrinsic Thin layer (HIT) was selected, and the optimization on the structure was carried out with the help of AFORS-HET software. The optimization of such a structure was undertaken by laying the intrinsic thin layers on both sides of the substrate or Transparent Conductive Oxides (TCO) that were placed on the front and back sides of the cell. In order to minimize the recombination, a back-surface field (BSF) was also put in the rear cell of the structure. Research on bifacial HIT structure needs to be done to select a solar cells structure that is most suitable with the voltage required by the bioFET. There are five structures modeling had done to have suitable structure using AFORS-HET. The entire five structures had been simulated on equilibrium mode, and they generally have shown to possess a band alignment type II, namely staggered heterojunction. The simulation results in equilibrium mode obtained one structure which the smallest ΔEC and ΔEV among the other four structures, that is TCO / a-Si:H(p) / a-Si:H(i) / c-Si(n) / a-Si:H(i) / a-Si:H(n<sup>+</sup>) / TCO / Al with ΔEC and ΔEV, 0.15006798 eV and 0.445920 eV respectively. This 2<sup>nd</sup> structure also has a smallest barrier in Φ<inf>Bn</inf>= 0.6791392 eV and Φ<inf>Bp</inf>= 0.08314 eV, respectively. The built-in potential of the 2<sup>nd</sup> structure is 1.13 V. This structure has J<inf>SC</inf>=0.083 A/cm<sup>2</sup> and V<inf>OC</inf> = 0.313 V. The deviation between built-in potential and V<inf>OC</inf> is realize in 0.817. The maximum current and maximum voltage are J<inf>m</inf> = 0,076 A/cm<sup>2</sup> and V<inf>m</inf> = 0,25 V respectively, so the maximum power of this structure is 0.019 Watt/cm<sup>2</sup>. Therefore the 2<sup>nd</sup> structure is the most appropriate structure to fulfill the bioFET supply.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114263877","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168515
Teti Zubaidah, Bulkis Kanata, Paniran, Ahmad Yani
A series research has been conducted during 2012–2015, attempting to harvest abundant geomagnetic energy in Lombok island — Indonesia, resulted in three constructions of magneto-static flux manipulators, which are intended to be used for geomagnetic power plant that operates based on wireless power transfer method. Here we present the third generation of manipulator, namely ‘mini magneto-static flux manipulator’, which consists of three concentric shielding sheets with diameters of 18.5 cm, and each sheet has 8 identical holes. Scattering of static and dynamic magnetic fields are tracked to determine the pattern of flux distribution alterations, caused by opening and closing of shielding holes. Measurements are taken in a semi-anechoic chamber with SPECTRAN NF 5035® and a pair of Helmholtz coils induces a nearly homogenous magnetic field which pattern have been three dimensional mapped in a previous research. Data of static and dynamic magnetic flux densities (each consist of 30 sample) are retrieved on 288 points for non-shielding (initial) condition and 1815 points for shielding (open and close) condition, with regular grid along 30 cm in x-, 20 cm in y-, and 20 cm in z-axis directions. Two dimensional slices are generated from three dimension maps of 1D orthogonal (x-direction) as well as 3D total component flux densities. Results show that placing of a mini manipulator also opening and closing of its shielding holes will alter magnetic field distributions in the shielded region. Even further it can convert static fields to dynamic ones. Therefore, mini magneto-static flux manipulators are more suitable to be applied for the next construction of geomagnetic power plant, considering their efficiencies which are higher than large scale manipulators.
2012-2015年，在印度尼西亚龙目岛进行了一系列的研究，试图获取丰富的地磁能量，结果产生了三个静磁通量操纵器，旨在用于基于无线输电方法运行的地磁发电厂。这里我们提出了第三代机械手，即“微型静磁通流机械手”，它由三个直径为18.5 cm的同心屏蔽片组成，每个屏蔽片有8个相同的孔。跟踪静态和动态磁场的散射，以确定屏蔽孔的打开和关闭引起的通量分布变化模式。使用SPECTRAN NF 5035®在半消声室中进行测量，一对亥姆霍兹线圈诱导出几乎均匀的磁场，该磁场的模式已在先前的研究中进行了三维映射。静态和动态磁通密度数据(各30个样本)在非屏蔽(初始)条件下288个点，在屏蔽(开合)条件下1815个点上进行检索，在x轴方向上沿30 cm, y轴方向上沿20 cm, z轴方向上沿20 cm的规则网格。二维切片由一维正交(x方向)的三维映射和三维总分量通量密度生成。结果表明，微型机械手的放置及其屏蔽孔的打开和关闭会改变屏蔽区内的磁场分布。甚至还可以将静态字段转换为动态字段。因此，小型静磁机械臂的效率高于大型机械臂，更适合于下一次地磁发电厂的建设。
{"title":"Static and dynamic magnetic fields scattering on a mini magneto-static flux manipulator for wireless power transfer","authors":"Teti Zubaidah, Bulkis Kanata, Paniran, Ahmad Yani","doi":"10.1109/QIR.2017.8168515","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168515","url":null,"abstract":"A series research has been conducted during 2012–2015, attempting to harvest abundant geomagnetic energy in Lombok island — Indonesia, resulted in three constructions of magneto-static flux manipulators, which are intended to be used for geomagnetic power plant that operates based on wireless power transfer method. Here we present the third generation of manipulator, namely ‘mini magneto-static flux manipulator’, which consists of three concentric shielding sheets with diameters of 18.5 cm, and each sheet has 8 identical holes. Scattering of static and dynamic magnetic fields are tracked to determine the pattern of flux distribution alterations, caused by opening and closing of shielding holes. Measurements are taken in a semi-anechoic chamber with SPECTRAN NF 5035® and a pair of Helmholtz coils induces a nearly homogenous magnetic field which pattern have been three dimensional mapped in a previous research. Data of static and dynamic magnetic flux densities (each consist of 30 sample) are retrieved on 288 points for non-shielding (initial) condition and 1815 points for shielding (open and close) condition, with regular grid along 30 cm in x-, 20 cm in y-, and 20 cm in z-axis directions. Two dimensional slices are generated from three dimension maps of 1D orthogonal (x-direction) as well as 3D total component flux densities. Results show that placing of a mini manipulator also opening and closing of its shielding holes will alter magnetic field distributions in the shielded region. Even further it can convert static fields to dynamic ones. Therefore, mini magneto-static flux manipulators are more suitable to be applied for the next construction of geomagnetic power plant, considering their efficiencies which are higher than large scale manipulators.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129177434","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168505
A. Halim, M. S. N. Ubay
The use of micro satellite for earth observation has growth significantly. Some industries and research institutions around the world develop its technologies. One of the important micro satellite technologies is Attitude Determination Control System (ADCS). ADCS typically consists of three operation modes which are initialization mode, detumbling mode and normal mode. These modes effect satellite attitude orientation determination. Due to the complexity of satellite orientation dynamics, design of ADCS becomes more complex and it is not easy to test the performances. The aim of this paper is to design a control method for ADCS. The control method is based on Integrative-Proportional Derivative (I-PD) type control which its parameters are determined to make satellite orientation track following preset direction. The performance of proposed controller is evaluated using satellite simulator which its parameters of simulation model are obtained from real satellite system. The simulator consists of some modules including reaction wheels, power supply system and onboard data handling systems. To test the performance of proposed ADCS control, detumbling test and target pointing test has been conducted. From simulation results, it is obvious that I-PD based ADCS has shown good enough performance.
{"title":"Performance simulation of I-PD based ADCS for earth observation micro satellite","authors":"A. Halim, M. S. N. Ubay","doi":"10.1109/QIR.2017.8168505","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168505","url":null,"abstract":"The use of micro satellite for earth observation has growth significantly. Some industries and research institutions around the world develop its technologies. One of the important micro satellite technologies is Attitude Determination Control System (ADCS). ADCS typically consists of three operation modes which are initialization mode, detumbling mode and normal mode. These modes effect satellite attitude orientation determination. Due to the complexity of satellite orientation dynamics, design of ADCS becomes more complex and it is not easy to test the performances. The aim of this paper is to design a control method for ADCS. The control method is based on Integrative-Proportional Derivative (I-PD) type control which its parameters are determined to make satellite orientation track following preset direction. The performance of proposed controller is evaluated using satellite simulator which its parameters of simulation model are obtained from real satellite system. The simulator consists of some modules including reaction wheels, power supply system and onboard data handling systems. To test the performance of proposed ADCS control, detumbling test and target pointing test has been conducted. From simulation results, it is obvious that I-PD based ADCS has shown good enough performance.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129609899","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168527
Ciptian Weried Priananda, Antonious Rajagukguk, D. Riawan, Soedibyo, M. Ashari
Photovoltaic is one of the electrical energy generating devices that potential for the future. In a large photovoltaic system, Photovoltaic Farm (PV Farm), there some issues that makes the operation less optimal. One of the problems is the shadow covering on the part of the area of PV Farm named Partially Shaded Condition. In topologies with single converter, partially shaded condition make the characteristic curve of the PV Farm have some multiple Maximum Power Point (MPP). This paper reviews the new approaches to harvest PV Farm by utilize multiple converter topologies for each cluster of local MPP. The total power generated by PV Farm is the sum of local MPP's values in each cluster of converter topologies. Hopely that the total power generated will be greater when compared with the use of MPPT algorithm on only single converter topologies. The use of Modified Perturb and Observe (PnO) Algorithm and Firefly Algorithm for MPPT not only proposed to increase the power harvested from PV Farm but also to reduce the impact of oscillations around the MPP power when the duty cyle is reaching steady state. This paper also comparing the performance of proposed method with Firefly Algorithm and PNO Modified algorithm for single converter topologies.
{"title":"New approach of maximum power point tracking for static miniature photovoltaic farm under partially shaded condition based on new cluster topology","authors":"Ciptian Weried Priananda, Antonious Rajagukguk, D. Riawan, Soedibyo, M. Ashari","doi":"10.1109/QIR.2017.8168527","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168527","url":null,"abstract":"Photovoltaic is one of the electrical energy generating devices that potential for the future. In a large photovoltaic system, Photovoltaic Farm (PV Farm), there some issues that makes the operation less optimal. One of the problems is the shadow covering on the part of the area of PV Farm named Partially Shaded Condition. In topologies with single converter, partially shaded condition make the characteristic curve of the PV Farm have some multiple Maximum Power Point (MPP). This paper reviews the new approaches to harvest PV Farm by utilize multiple converter topologies for each cluster of local MPP. The total power generated by PV Farm is the sum of local MPP's values in each cluster of converter topologies. Hopely that the total power generated will be greater when compared with the use of MPPT algorithm on only single converter topologies. The use of Modified Perturb and Observe (PnO) Algorithm and Firefly Algorithm for MPPT not only proposed to increase the power harvested from PV Farm but also to reduce the impact of oscillations around the MPP power when the duty cyle is reaching steady state. This paper also comparing the performance of proposed method with Firefly Algorithm and PNO Modified algorithm for single converter topologies.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131476915","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168464
Lin Prasetyani, P. Priambodo
Laser applications in manufacturing processes such as cutting, welding, and engraving processes are become more popular nowadays. High-power and pulsed lasers such as CO2 and Nd:YAG gas lasers are commonly used in applications of metal cutting and welding. Meanwhile, for engraving process laser diode is more preferred due to its properties of compact shape, easy to operate, low power and high efficiency in comparison to CO2 and Nd:YAG laser gas. Owing to the rectangle resonator, the diode laser beam has some inevitable property disadvantages, such as wide-angle divergence, astigmatism and beam profile which has non-ideal elliptical beam shape. These deficiencies lead to a poor quality of beam profile. In order to obtain a high-quality engraving process, two things have to be considered. The first one is a significant requirement of a good beam quality, which is ideally a round beam shape and the second is characterization of burning time and laser intensity for each specific material object. The beam profile quality can be improved by several optical process steps, which finally end up to a perfect Gaussian round beam shape profile. The beam quality improvement can be done by using several-lens structures, for instances: (1) a combination of two sequential cylindrical lenses; (2) the use of two serial anamorphic prisms; (3) cylindrical micro lenses structure and (4) the usage of a single mode optical fiber. In this paper, we design a combination of two sequential cylindrical lenses to reshape a non-ideal beam shape (ellipse) generated from 450-nm laser diode to be more ideal round beam shape, which reduces the divergence angle of the fast axis. Based on the technical experience and consideration the uses of two cylindrical lenses are the most common, low cost and simple method. We analyze the quality of the beam profile by observing the laser-diode burned footprint on the material object. The round beam shape is the best shape and appropriate for engraving process. Moreover, in order to obtain a perfect engraving result, we are also conducting and reporting the burning time and laser intensity characterization.
{"title":"450nm Laser diode beam shaping in engraving process","authors":"Lin Prasetyani, P. Priambodo","doi":"10.1109/QIR.2017.8168464","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168464","url":null,"abstract":"Laser applications in manufacturing processes such as cutting, welding, and engraving processes are become more popular nowadays. High-power and pulsed lasers such as CO2 and Nd:YAG gas lasers are commonly used in applications of metal cutting and welding. Meanwhile, for engraving process laser diode is more preferred due to its properties of compact shape, easy to operate, low power and high efficiency in comparison to CO2 and Nd:YAG laser gas. Owing to the rectangle resonator, the diode laser beam has some inevitable property disadvantages, such as wide-angle divergence, astigmatism and beam profile which has non-ideal elliptical beam shape. These deficiencies lead to a poor quality of beam profile. In order to obtain a high-quality engraving process, two things have to be considered. The first one is a significant requirement of a good beam quality, which is ideally a round beam shape and the second is characterization of burning time and laser intensity for each specific material object. The beam profile quality can be improved by several optical process steps, which finally end up to a perfect Gaussian round beam shape profile. The beam quality improvement can be done by using several-lens structures, for instances: (1) a combination of two sequential cylindrical lenses; (2) the use of two serial anamorphic prisms; (3) cylindrical micro lenses structure and (4) the usage of a single mode optical fiber. In this paper, we design a combination of two sequential cylindrical lenses to reshape a non-ideal beam shape (ellipse) generated from 450-nm laser diode to be more ideal round beam shape, which reduces the divergence angle of the fast axis. Based on the technical experience and consideration the uses of two cylindrical lenses are the most common, low cost and simple method. We analyze the quality of the beam profile by observing the laser-diode burned footprint on the material object. The round beam shape is the best shape and appropriate for engraving process. Moreover, in order to obtain a perfect engraving result, we are also conducting and reporting the burning time and laser intensity characterization.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122396926","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168485
Prihandoko, Bertalya, Muhammad Iqbal Ramadhan
Indonesia is one of the countries with diverse morphology of the lands, high mountains, and the tropical climates of frequent high rainfall. This condition often causes natural disasters in some areas of the country, which sometimes are so terrible that make a lot of people are missing and suffering. In order to reduce the impact of natural disasters to the people and environment, a research was conducted by capturing data showing the occurrence of the disasters and data about the weather conditions for the last five years. Data is obtained from the official sites of Indonesian National Board for Disaster Management (BNPB) and Indonesian Agency for Meteorological, Climatological, and Geophysics (BMKG). This data is then analyzed by using clustering data mining techniques i.e. k-means algorithm and k-medoids algorithm. The two methods are frequently used to make some analysis of data to find some hidden information. The result shows that weather is not the only factor causing natural disaster. By using the result, the government can make some plans for natural disaster mitigations.
{"title":"An analysis of natural disaster data by using K-means and K-medoids algorithm of data mining techniques","authors":"Prihandoko, Bertalya, Muhammad Iqbal Ramadhan","doi":"10.1109/QIR.2017.8168485","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168485","url":null,"abstract":"Indonesia is one of the countries with diverse morphology of the lands, high mountains, and the tropical climates of frequent high rainfall. This condition often causes natural disasters in some areas of the country, which sometimes are so terrible that make a lot of people are missing and suffering. In order to reduce the impact of natural disasters to the people and environment, a research was conducted by capturing data showing the occurrence of the disasters and data about the weather conditions for the last five years. Data is obtained from the official sites of Indonesian National Board for Disaster Management (BNPB) and Indonesian Agency for Meteorological, Climatological, and Geophysics (BMKG). This data is then analyzed by using clustering data mining techniques i.e. k-means algorithm and k-medoids algorithm. The two methods are frequently used to make some analysis of data to find some hidden information. The result shows that weather is not the only factor causing natural disaster. By using the result, the government can make some plans for natural disaster mitigations.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129212848","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}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168494
Diah Kusumawati, M. Suryanegara, S. Ariyanti
This paper aims to calculate the Internet of Things (IoT) spectrum requirement of smart transportation supported by LTE mobile technology by taking case study of smart transportation in Jakarta. This calculation is needed due to a prediction of deficiency of 500 MHz mobile spectrum in 2020. We use the method of general LTE planning equation. The results are IoT spectrum needed by smart transportation in Jakarta by 2020 reaches 0.0140 KHz, for smart transportation equipped with a GPS sensor, and grows to 84.290 KHz in order to accommodate an additional CCTV in every bus. Spectrum requirements are increased by 2.93% in 2025.
{"title":"IoT spectrum requirement for smart transportation","authors":"Diah Kusumawati, M. Suryanegara, S. Ariyanti","doi":"10.1109/QIR.2017.8168494","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168494","url":null,"abstract":"This paper aims to calculate the Internet of Things (IoT) spectrum requirement of smart transportation supported by LTE mobile technology by taking case study of smart transportation in Jakarta. This calculation is needed due to a prediction of deficiency of 500 MHz mobile spectrum in 2020. We use the method of general LTE planning equation. The results are IoT spectrum needed by smart transportation in Jakarta by 2020 reaches 0.0140 KHz, for smart transportation equipped with a GPS sensor, and grows to 84.290 KHz in order to accommodate an additional CCTV in every bus. Spectrum requirements are increased by 2.93% in 2025.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127550876","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}
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