Pub Date : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431413
Somyot Seesansui, Tharathip Phurahong, J. Sarasook
Paper presents automatic temperature control for plant house. Water evaporation technique is applied. The system has to water the plant and control temperature in range of 24-30 °C. Arduino Uno R3 was used as microcontroller. Temperature and humidity were detected by DHT sensors module. The four relays were used for controlling system. LCD screen showed condition of environment. Two pumps were used for watering plants and cooling pads. Cooling pads were use in cooling system applying water evaporation technique. A fan was installed on the top of house plant. For the construction of plant house, structure made of PVC tube. The house was covered by PVC canvas. Light can pass throughout. For watering system, ¼ inch tube was installed to water the plant. From experimental results show that the automatic system can be controlled temperature in the range of 24-28 °C. The relative humidity in house is approximately 75-90% while outside house is about 45-75%. Finally, the rate of growing in plant house by temperature control is higher about 30% than natural condition.
本文介绍了厂房温度的自动控制。采用水蒸发技术。该系统必须给植物浇水，并将温度控制在24-30°C的范围内。单片机采用Arduino Uno R3。温度和湿度由DHT传感器模块检测。四个继电器用于控制系统。液晶屏显示环境状况。两台水泵用于浇花和冷却垫。采用水蒸发技术在冷却系统中使用冷却垫。在室内植物的顶部安装了一台风扇。用于厂房建筑，结构采用PVC管。房子被聚氯乙烯帆布覆盖着。光可以穿透。对于浇水系统，安装了1 / 4英寸的管子来给植物浇水。实验结果表明，该自动系统可将温度控制在24-28℃范围内。室内相对湿度约为75-90%，室外约为45-75%。最后，通过温度控制，植物室内的生长速率比自然条件下高30%左右。
{"title":"The Automatic Temperature Control for Agricultural Plant House","authors":"Somyot Seesansui, Tharathip Phurahong, J. Sarasook","doi":"10.1109/ICPEI49860.2020.9431413","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431413","url":null,"abstract":"Paper presents automatic temperature control for plant house. Water evaporation technique is applied. The system has to water the plant and control temperature in range of 24-30 °C. Arduino Uno R3 was used as microcontroller. Temperature and humidity were detected by DHT sensors module. The four relays were used for controlling system. LCD screen showed condition of environment. Two pumps were used for watering plants and cooling pads. Cooling pads were use in cooling system applying water evaporation technique. A fan was installed on the top of house plant. For the construction of plant house, structure made of PVC tube. The house was covered by PVC canvas. Light can pass throughout. For watering system, ¼ inch tube was installed to water the plant. From experimental results show that the automatic system can be controlled temperature in the range of 24-28 °C. The relative humidity in house is approximately 75-90% while outside house is about 45-75%. Finally, the rate of growing in plant house by temperature control is higher about 30% than natural condition.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128929057","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431402
P. Suwanapingkarl, K. Srivallop
The installing and generating capacity of sustainable energy dramatically increasing since 2009. It can be noted that none a single sustainable energy technology will be able to achieve the carbon reduction independently. The simultaneously developed of many sustainable energies still needed. The recent growth in sustainable energy, especially tidal and wave energy is shown that the nano-scale generators for the river and ocean are still required. This is due to the most country in the world have the river and the ocean covers approximately 70 % of the surface of the earth. In practice, the tidal energy is the interaction between the gravity of the sun, earth, and moon, and hence it results the rise and fall of the tides. Whereas, the wave energy is the water movement due to the frictional drag of wind over the water surface. Despite these advantages, tidal and wave energy continued to face challenges in achieving a high efficiency output to generate the electricity, Moreover, some standards and regulations of grid connected are needed to revise in order to ensure its operations and safety. These allow small-scale distributed generator such sustainable energy resources to cooperate with the exiting power network. Therefore, the paper reviews and proposes the nano-scale generator of tidal and wave energy for river and ocean. The proposed generator can support at the riverbank, in the middle of river, bays, shoreline, coastal estuaries, and in the middle of ocean. The generator should be easy to install and maintenance, while the chosen material structure of generator has the corrosion resistance of the saline water. The generator must follow the standards and regulations in order to ensure its safety.
{"title":"Reviews Existing Technologies and Proposes ‘E8-PowerBuoys' Nano-Scale Generator Of Tidal And Wave Energy For River And Ocean","authors":"P. Suwanapingkarl, K. Srivallop","doi":"10.1109/ICPEI49860.2020.9431402","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431402","url":null,"abstract":"The installing and generating capacity of sustainable energy dramatically increasing since 2009. It can be noted that none a single sustainable energy technology will be able to achieve the carbon reduction independently. The simultaneously developed of many sustainable energies still needed. The recent growth in sustainable energy, especially tidal and wave energy is shown that the nano-scale generators for the river and ocean are still required. This is due to the most country in the world have the river and the ocean covers approximately 70 % of the surface of the earth. In practice, the tidal energy is the interaction between the gravity of the sun, earth, and moon, and hence it results the rise and fall of the tides. Whereas, the wave energy is the water movement due to the frictional drag of wind over the water surface. Despite these advantages, tidal and wave energy continued to face challenges in achieving a high efficiency output to generate the electricity, Moreover, some standards and regulations of grid connected are needed to revise in order to ensure its operations and safety. These allow small-scale distributed generator such sustainable energy resources to cooperate with the exiting power network. Therefore, the paper reviews and proposes the nano-scale generator of tidal and wave energy for river and ocean. The proposed generator can support at the riverbank, in the middle of river, bays, shoreline, coastal estuaries, and in the middle of ocean. The generator should be easy to install and maintenance, while the chosen material structure of generator has the corrosion resistance of the saline water. The generator must follow the standards and regulations in order to ensure its safety.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"406 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133945721","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431422
Phatthara Surachon, T. Ratniyomchai, T. Kulworawanichpong
This article presents a novel research on aerodynamic brake by reducing brake distance and braking energy of the high-speed trains (HST), which is inspirational from the aerodynamic brake on a commercial aircraft’s wings. In emergency case, both brake distance and braking time of HST will be longer than normal situation, therefore, safety for passengers and management about controlling the driving of HST are very important. The aerodynamic brake effected on the dynamic motion of trains during braking are analyzed and considered as the aircraft’s flaps that is applied in HST. The area of aerodynamic brake functions as the additional drag force during braking. The HST with the speed from 200 km/h to 350 km/h is a case study of this article. As the results, it is found that the braking time and brake distance can be reduced in comparison with the system without aerodynamic brake. The braking distance is reduced by 394 m or 0.13% when the area of aerodynamic brake increases to 100%. However, when aerodynamic brake is used in real situation, it should be chosen the area of aerodynamic brake that is suitable to the dimension of train body, and it should not block electricity cable, energy resource in the train, tunnel and so on. Moreover, it can reduce the energy of braking, and energy saving is reduced by 3.23 kWh or 0.692%, therefore, the mechanical brake and its maintenance have efficient advantages by extending its service life.
{"title":"Aerodynamic Brake Study of Reducing Braking Distance and Decreasing Using The Energy of Braking of High-Speed Trains","authors":"Phatthara Surachon, T. Ratniyomchai, T. Kulworawanichpong","doi":"10.1109/ICPEI49860.2020.9431422","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431422","url":null,"abstract":"This article presents a novel research on aerodynamic brake by reducing brake distance and braking energy of the high-speed trains (HST), which is inspirational from the aerodynamic brake on a commercial aircraft’s wings. In emergency case, both brake distance and braking time of HST will be longer than normal situation, therefore, safety for passengers and management about controlling the driving of HST are very important. The aerodynamic brake effected on the dynamic motion of trains during braking are analyzed and considered as the aircraft’s flaps that is applied in HST. The area of aerodynamic brake functions as the additional drag force during braking. The HST with the speed from 200 km/h to 350 km/h is a case study of this article. As the results, it is found that the braking time and brake distance can be reduced in comparison with the system without aerodynamic brake. The braking distance is reduced by 394 m or 0.13% when the area of aerodynamic brake increases to 100%. However, when aerodynamic brake is used in real situation, it should be chosen the area of aerodynamic brake that is suitable to the dimension of train body, and it should not block electricity cable, energy resource in the train, tunnel and so on. Moreover, it can reduce the energy of braking, and energy saving is reduced by 3.23 kWh or 0.692%, therefore, the mechanical brake and its maintenance have efficient advantages by extending its service life.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133521413","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431563
Nattapan Thanomsat, Surachat Lekngam
The installation characteristics of PV systems are different in each area, some area uses a free standing PV panels on the ground, some area uses PV system on the roof that including the type of roof and the distance between the roof and the PV panels in the installation. A temperature of PV panels on the roof can rise substantially in comparison with that of free standing PV panels on the ground. That means, produced power of PV system on the roof may be reduced substantially. An aim of this experiment was to study comparison the produced power of PV panels with an install capacities 600 watts on the roof, between the metal sheet roof and fiber cement roof. The experimental results of the measurement of PV panels on the different roof types have verified and comparison power by simulation in PSCAD. The PV system on the fiber cement roof can produce power better than The PV system on the metal sheet roof because the fiber cement roof can reflect heat wave better than the metal sheet roof.
{"title":"Impact of Different Roof Types on Produced Power of Photovoltaic Rooftop System","authors":"Nattapan Thanomsat, Surachat Lekngam","doi":"10.1109/ICPEI49860.2020.9431563","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431563","url":null,"abstract":"The installation characteristics of PV systems are different in each area, some area uses a free standing PV panels on the ground, some area uses PV system on the roof that including the type of roof and the distance between the roof and the PV panels in the installation. A temperature of PV panels on the roof can rise substantially in comparison with that of free standing PV panels on the ground. That means, produced power of PV system on the roof may be reduced substantially. An aim of this experiment was to study comparison the produced power of PV panels with an install capacities 600 watts on the roof, between the metal sheet roof and fiber cement roof. The experimental results of the measurement of PV panels on the different roof types have verified and comparison power by simulation in PSCAD. The PV system on the fiber cement roof can produce power better than The PV system on the metal sheet roof because the fiber cement roof can reflect heat wave better than the metal sheet roof.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123810124","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431433
Wannadear Nawae, K. Thongpull
Permanent Magnet Synchronous Motors (PMSM) are commonly used in robotic arms for light load applications such as industrial medical, and home service. These robotic applications are required an ability to aware their operating conditions due to safety reasons as they are likely to be operated close to humans. One of the major parameters to examine the situations is rotor torque which conventionally acquired by a torque transducer. However, using such device requires extra cost, bulky mechanical installation, and data acquisition electronics. Due to this trade-off, we propose a machine learning based method for rotor torque estimation. The information used in the estimation process are solely electrical signals generated by the motor itself without any actual sensor required. In this paper we present an investigation and feasibility study of the proposed sensorless torque estimation. A motor test bench has been developed for observing motor characteristics also for collecting information to create torque prediction models. Numerous statistical based machine learning methods have been applied in this work including Neural Networks regression, Linear regression, and Stepwise regression. The proposed system has been used to created prediction models according to the occupied regression methods. The estimation performance has been considered by comparing the estimated results with ground truths from an actual torque sensor. The estimation model based on Neural network regression has achieved highest accuracy at 0.11 of RMSE and 0.996 of R value. The results shown the potential of applying the proposed senseless torque estimation for robot application with acceptable performance.
{"title":"PMSM Torque Estimation Based on Machine Learning Techniques","authors":"Wannadear Nawae, K. Thongpull","doi":"10.1109/ICPEI49860.2020.9431433","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431433","url":null,"abstract":"Permanent Magnet Synchronous Motors (PMSM) are commonly used in robotic arms for light load applications such as industrial medical, and home service. These robotic applications are required an ability to aware their operating conditions due to safety reasons as they are likely to be operated close to humans. One of the major parameters to examine the situations is rotor torque which conventionally acquired by a torque transducer. However, using such device requires extra cost, bulky mechanical installation, and data acquisition electronics. Due to this trade-off, we propose a machine learning based method for rotor torque estimation. The information used in the estimation process are solely electrical signals generated by the motor itself without any actual sensor required. In this paper we present an investigation and feasibility study of the proposed sensorless torque estimation. A motor test bench has been developed for observing motor characteristics also for collecting information to create torque prediction models. Numerous statistical based machine learning methods have been applied in this work including Neural Networks regression, Linear regression, and Stepwise regression. The proposed system has been used to created prediction models according to the occupied regression methods. The estimation performance has been considered by comparing the estimated results with ground truths from an actual torque sensor. The estimation model based on Neural network regression has achieved highest accuracy at 0.11 of RMSE and 0.996 of R value. The results shown the potential of applying the proposed senseless torque estimation for robot application with acceptable performance.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129335860","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431480
N. Chattranont, S. Woothipatanapan, N. Rugthaicharoencheep
This paper discusses Dissolved Gas Analysis (DGA) in transformer oil from two 69/24 kV 24/32 MVA installed in urban areas. By detecting unusual increasing gas, then transformer oil samples were collected frequently according to Standards. First transformer was failed by inside short circuit. All loads were transfer to second transformer. The risk of failure on last transformer is very high. Standards used for DGA interpretation is IEEE C57.104. Evaluation of fault type used Key gas method, Doernenburg ratio, Rogers ratio and Duval Triangle.
{"title":"Case Study on Power Transformer using Dissolved Gas Analysis Technique","authors":"N. Chattranont, S. Woothipatanapan, N. Rugthaicharoencheep","doi":"10.1109/ICPEI49860.2020.9431480","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431480","url":null,"abstract":"This paper discusses Dissolved Gas Analysis (DGA) in transformer oil from two 69/24 kV 24/32 MVA installed in urban areas. By detecting unusual increasing gas, then transformer oil samples were collected frequently according to Standards. First transformer was failed by inside short circuit. All loads were transfer to second transformer. The risk of failure on last transformer is very high. Standards used for DGA interpretation is IEEE C57.104. Evaluation of fault type used Key gas method, Doernenburg ratio, Rogers ratio and Duval Triangle.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126671185","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431515
Nidchabendha Chandanachulaka Roekrai, W. Khan-ngern
This paper presents Energy, Economic, and Environmental (3E) analysis of Zero Energy Consumption Building (ZECB) concept. A case study of Thai mediation house which constructed following ZECB concept is provided. The conditions of this off-grid PV house are daily load demand is approximately 4.605 kWh and this house must be able to use the energy for 2 days without the sunlight. Each parameter in 3E analysis is used to evaluate the possibility of ZECB.
{"title":"Energy, Economic, and Environmental (3E) Analysis of Zero Energy Consumption Building: A Case Study of Thai Style Mediation House","authors":"Nidchabendha Chandanachulaka Roekrai, W. Khan-ngern","doi":"10.1109/ICPEI49860.2020.9431515","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431515","url":null,"abstract":"This paper presents Energy, Economic, and Environmental (3E) analysis of Zero Energy Consumption Building (ZECB) concept. A case study of Thai mediation house which constructed following ZECB concept is provided. The conditions of this off-grid PV house are daily load demand is approximately 4.605 kWh and this house must be able to use the energy for 2 days without the sunlight. Each parameter in 3E analysis is used to evaluate the possibility of ZECB.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127601045","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431488
Aunsit Punsirichaiyakul, T. Ratniyomchai, T. Kulworawanichpong
This article purposes to study theories of gravitational potential energy as an energy storage system by lifting the weight of concrete stacks up to the top as stored energy and dropping the concrete stacks down to the ground to discharge energy back to the electrical power system. This article is the analysis and trial plan to create an energy storage systems model with the vertical concrete stacks to form a suitable configuration. The gravitational energy storage system is an energy transformation between the gravitational potential energy and the kinetic energy of the concrete stacks moving down to the electrical energy via a generator. A comparative efficiency study of the charging and discharging energy system during lifting and dropping concrete stacks are also presented. The case study is based on the feasible square prism concrete stacks in vertical shape with a weight of 100 tonnes per stack. The height of the system is about 50 m. As the result, the power system obtains the energy from the gravitational energy storage as a discharging mode by 9.68 kWh, however, supplies the energy to the gravitational energy storage as a charging mode about 12.10 kWh with the overall efficiency of 80%. The finding in this study, the discharging mode of the gravitational energy storage is suitable to use in the power system to support the high demand during the on-peak time or the duration of the high cost of electricity whereas the charging mode is possibly used in the duration of off-peak time with low cost of electricity or supported by the renewable energy sources around.
{"title":"Gravitational energy storage by using concrete stacks","authors":"Aunsit Punsirichaiyakul, T. Ratniyomchai, T. Kulworawanichpong","doi":"10.1109/ICPEI49860.2020.9431488","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431488","url":null,"abstract":"This article purposes to study theories of gravitational potential energy as an energy storage system by lifting the weight of concrete stacks up to the top as stored energy and dropping the concrete stacks down to the ground to discharge energy back to the electrical power system. This article is the analysis and trial plan to create an energy storage systems model with the vertical concrete stacks to form a suitable configuration. The gravitational energy storage system is an energy transformation between the gravitational potential energy and the kinetic energy of the concrete stacks moving down to the electrical energy via a generator. A comparative efficiency study of the charging and discharging energy system during lifting and dropping concrete stacks are also presented. The case study is based on the feasible square prism concrete stacks in vertical shape with a weight of 100 tonnes per stack. The height of the system is about 50 m. As the result, the power system obtains the energy from the gravitational energy storage as a discharging mode by 9.68 kWh, however, supplies the energy to the gravitational energy storage as a charging mode about 12.10 kWh with the overall efficiency of 80%. The finding in this study, the discharging mode of the gravitational energy storage is suitable to use in the power system to support the high demand during the on-peak time or the duration of the high cost of electricity whereas the charging mode is possibly used in the duration of off-peak time with low cost of electricity or supported by the renewable energy sources around.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133196145","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431494
T. Archevapanich, P. Chomtong, P. Akkaraekthalin
This paper proposes a split ring resonator unit cell using interdigital structure. The size can be reduced from λ/2 to about λ/4 caused by the slow wave effect. An array of 14×14 unit cells can be formed to act as a frequency selective surface (FSS). The proposed FSS is designed at frequency of 1.8 GHz, which the length of unit cell is 11.48 mm and the length of FSS is 172.50 mm. Using double layer FSS, the effect of coupling between layers will result in a larger bandwidth from 1.8 GHz to 2.45 GHz. The simulation results when applying a dipole antenna over the double layer FSS show that the high antenna gains of 8.34 dB and 9.75 dB are obtained at 1.8 GHz to 2.45 GHz, respectively. The proposed double layer FSS with a dipole can be applied for modern communication systems including LTE and WLAN.
{"title":"A Double Layer Frequency Selective Surface using Interdigital Split Ring Resonators and Applications","authors":"T. Archevapanich, P. Chomtong, P. Akkaraekthalin","doi":"10.1109/ICPEI49860.2020.9431494","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431494","url":null,"abstract":"This paper proposes a split ring resonator unit cell using interdigital structure. The size can be reduced from λ/2 to about λ/4 caused by the slow wave effect. An array of 14×14 unit cells can be formed to act as a frequency selective surface (FSS). The proposed FSS is designed at frequency of 1.8 GHz, which the length of unit cell is 11.48 mm and the length of FSS is 172.50 mm. Using double layer FSS, the effect of coupling between layers will result in a larger bandwidth from 1.8 GHz to 2.45 GHz. The simulation results when applying a dipole antenna over the double layer FSS show that the high antenna gains of 8.34 dB and 9.75 dB are obtained at 1.8 GHz to 2.45 GHz, respectively. The proposed double layer FSS with a dipole can be applied for modern communication systems including LTE and WLAN.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133582346","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 : 2020-10-14DOI: 10.1109/ICPEI49860.2020.9431460
Kunanya Leauprasert, T. Suwanasri, C. Suwanasri, N. Poonnoy
This paper introduces a condition assessment of power transformer in term of percentage of health index (%HI) by using regression models. The conditions of major components of power transformer are assessed by using input datasets from visual inspection, electrical test as well as paper and oil insulation test. 90 features of these input datasets are tested in regression models for determining the predicted HI. Six regression models such as linear regression, Ridge regression and Lasso regression, random forest regression, support vector regression, and deep neural network regression are tested to predict %HI. Actual input datasets related to actual %HI of 317 power transformers are used to teach such learning regression models. The random forest regression performs the best model providing the best output dataset with the lowest errors.
{"title":"Intelligent Machine Learning Techniques for Condition Assessment of Power Transformers","authors":"Kunanya Leauprasert, T. Suwanasri, C. Suwanasri, N. Poonnoy","doi":"10.1109/ICPEI49860.2020.9431460","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431460","url":null,"abstract":"This paper introduces a condition assessment of power transformer in term of percentage of health index (%HI) by using regression models. The conditions of major components of power transformer are assessed by using input datasets from visual inspection, electrical test as well as paper and oil insulation test. 90 features of these input datasets are tested in regression models for determining the predicted HI. Six regression models such as linear regression, Ridge regression and Lasso regression, random forest regression, support vector regression, and deep neural network regression are tested to predict %HI. Actual input datasets related to actual %HI of 317 power transformers are used to teach such learning regression models. The random forest regression performs the best model providing the best output dataset with the lowest errors.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114144489","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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