Generally, the high boost filtering often produced a lot of unpleasant noise, especially the flat area. Moreover, it also gives color distortion in the edge regions when applied for the color image. In this paper, we propose the adaptive sharpening filter based on the high boost filtering for increasing the image details. This filter consists of two parts as the original and the High-frequency Component (HC) parts. The HC part was controlled by using the adaptive weight matrix, which was constructed from the non-linear combination. The Laplacian operator was employed as the high-pass filter for generating both the HC and the adaptive weight matrix. The simulated step-edge image, grayscale images, and color images were applied for observing our filter performance. The traditional bilateral filter and high boost filter are used as the comparison filters. The experimental results show that our proposed filter can increase the edge sharpness while it did not enhance the unpleasant noise for the flat area. Moreover, it also reduces the color distortion and edge ringing when applied to the color images.
{"title":"Adaptive High Boost Filtering for Increasing Grayscale and Color Image Details","authors":"Yaowamal Raphiphan, Suppakun Wattanakaroon, Suphongsa Khetkeeree","doi":"10.1109/ICPEI49860.2020.9431572","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431572","url":null,"abstract":"Generally, the high boost filtering often produced a lot of unpleasant noise, especially the flat area. Moreover, it also gives color distortion in the edge regions when applied for the color image. In this paper, we propose the adaptive sharpening filter based on the high boost filtering for increasing the image details. This filter consists of two parts as the original and the High-frequency Component (HC) parts. The HC part was controlled by using the adaptive weight matrix, which was constructed from the non-linear combination. The Laplacian operator was employed as the high-pass filter for generating both the HC and the adaptive weight matrix. The simulated step-edge image, grayscale images, and color images were applied for observing our filter performance. The traditional bilateral filter and high boost filter are used as the comparison filters. The experimental results show that our proposed filter can increase the edge sharpness while it did not enhance the unpleasant noise for the flat area. Moreover, it also reduces the color distortion and edge ringing when applied to the color images.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"3 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":"134552608","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/ICPEI49860.2020.9431400
T. Suwanasri, P. Fuangpian, Nattapon Panmala, T. Somsak, C. Suwanasri, Shan Rungsivattagapong, Nattawut Atiwet, Papatsporn Poonpoch
This paper presents the comparison of partial discharge (PD) interpretation on three different standard test objects and defected power cable terminations among an PD acoustic sensor and conventional IEC60270 capacitive PD detection system. The experiments are conducted as off-line testing which is sourced by isolated high voltage step up transformer in laboratory based on safety standard. The results illustrate that the PD acoustic sensor applies cloud analyzer in order to identify PD types with different sensitivities from conventional PD detection system. In addition, it also can determine PD location on the test objects.
{"title":"Partial Discharge Investigation on Power Cable Termination Using PD Acoustic Detection","authors":"T. Suwanasri, P. Fuangpian, Nattapon Panmala, T. Somsak, C. Suwanasri, Shan Rungsivattagapong, Nattawut Atiwet, Papatsporn Poonpoch","doi":"10.1109/ICPEI49860.2020.9431400","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431400","url":null,"abstract":"This paper presents the comparison of partial discharge (PD) interpretation on three different standard test objects and defected power cable terminations among an PD acoustic sensor and conventional IEC60270 capacitive PD detection system. The experiments are conducted as off-line testing which is sourced by isolated high voltage step up transformer in laboratory based on safety standard. The results illustrate that the PD acoustic sensor applies cloud analyzer in order to identify PD types with different sensitivities from conventional PD detection system. In addition, it also can determine PD location on the test objects.","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":"131349173","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/ICPEI49860.2020.9431578
Warin Wanpare, Anol Paisal, S. Chalermwisutkul
This paper presents design and measurement verification of a compact monopole antenna with 923 MHz operating frequency for LoRaWAN Internet of Things (IoT) applications. The size of the proposed antenna is 13.11 × 22.95 mm2 which is extremely small compared to the wavelength at the operating frequency. The substrate material is FR-4 with a nominal relative dielectric constant of εr=4.3, loss tangent of tanδ=0.2 and a thickness of 1.6 mm. Miniaturization of the proposed antenna was achieved by using a short stub similar to the case with an inverted-F antenna combined with a folded monopole radiator. The measurement results of the proposed antenna show an impedance matching bandwidth of 4.5 MHz and a peak gain of -11.86 dBi with an omnidirectional radiation pattern. The low gain is typical for an electrically small antenna of this size according to the physical gain limit. Due to its extremely compact size, the proposed antenna is a good candidate for small IoT devices which can easily be integrated to physical objects in everyday life.
{"title":"A Compact 923 MHz Monopole Antenna for LoRaWAN IoT Applications","authors":"Warin Wanpare, Anol Paisal, S. Chalermwisutkul","doi":"10.1109/ICPEI49860.2020.9431578","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431578","url":null,"abstract":"This paper presents design and measurement verification of a compact monopole antenna with 923 MHz operating frequency for LoRaWAN Internet of Things (IoT) applications. The size of the proposed antenna is 13.11 × 22.95 mm2 which is extremely small compared to the wavelength at the operating frequency. The substrate material is FR-4 with a nominal relative dielectric constant of εr=4.3, loss tangent of tanδ=0.2 and a thickness of 1.6 mm. Miniaturization of the proposed antenna was achieved by using a short stub similar to the case with an inverted-F antenna combined with a folded monopole radiator. The measurement results of the proposed antenna show an impedance matching bandwidth of 4.5 MHz and a peak gain of -11.86 dBi with an omnidirectional radiation pattern. The low gain is typical for an electrically small antenna of this size according to the physical gain limit. Due to its extremely compact size, the proposed antenna is a good candidate for small IoT devices which can easily be integrated to physical objects in everyday 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":"116553418","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/ICPEI49860.2020.9431509
S. Sooksatra, W. Subsingha
In this paper, a concept of state-plane diagram approach used for analysis of ZCS boost converter with inductive output filter (ZCS_IF) is presented. The geometrical properties of the trajectory in the state-plane diagram can also be used to derive the converter characteristics, which are essential in determining the key parameters of the proposed converter, such as the converter gain, the component values and etc. These parameters are important for the purpose of the circuit design of the proposed converter. However, in order to confirm the analytical work of the proposed topology using the state-plane approach, the computer simulation is also done.
{"title":"ZCS Boost Converter with Inductive Output Filter","authors":"S. Sooksatra, W. Subsingha","doi":"10.1109/ICPEI49860.2020.9431509","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431509","url":null,"abstract":"In this paper, a concept of state-plane diagram approach used for analysis of ZCS boost converter with inductive output filter (ZCS_IF) is presented. The geometrical properties of the trajectory in the state-plane diagram can also be used to derive the converter characteristics, which are essential in determining the key parameters of the proposed converter, such as the converter gain, the component values and etc. These parameters are important for the purpose of the circuit design of the proposed converter. However, in order to confirm the analytical work of the proposed topology using the state-plane approach, the computer simulation is also done.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"220 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":"130409538","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/ICPEI49860.2020.9431454
P. Suwanapingkarl, M. Boonthienthong, K. Srivallop, S. Prakobkit
The Hydropower is considered as the most efficient power generation of sustainable energy. This type of technology is commonly based on the falling and flowing of the water, and hence the characteristic of the water can be considered as a potential of kinetic energy. Moreover, this technology is relatively most economic, low emission, sustainable, high flexibility and response to the peak demand. It is capable of rapid response to the demand because it can immediately generate the power, when the water falls and/or flows through the turbines. This means that it can contribute the stability of electricity.Nowadays, the nano-technology and characteristic of materials is continually growth and developed, respectively, and hence it is also effected the technology of hydropower turbine such as large construction site, high investment, and then long term of payback period. Therefore, it is necessary to classify the sizing of the Hydropower in order to specify the suitable requirement of design and installation. It is known that there are no international standards and regulations consensus on the definition of sizing the Hydropower. However, it can be approximately classified into as follows; Pico-Hydropower (rated less than 5 kW), Nano-Hydropower (rated less than 10 kW), Micro-Hydro (rated less than 100 kW), Mini-Hydropower (rated less than 1,000 kW), Small-Hydropower (rated less than 6,000 kW) and the upper limit of Hydropower (rated from 6,000 kw up to 30,000 kW), respectively.The paper has been designed and implemented the Pico-Hydropower for waterfall and canal, which calls ‘nHy-Fall’ devices. The prototype devices were carried out at the Sai Yok National Park, Kanchanaburi, Thailand in order to validate and ensure its performance. To achieve the Pico- Hydropower turbine, the mathematic modelling, computer simulation (as MATLAB/Simulink software), computer design (as AutoCAD and/or SolidWorks software) and implementation the prototype was carried out. The proposed ‘nHy- Fall’ devices can mainly support at the waterfall and canal, while it can also install at the riverbank, in the middle of river, bays, shoreline and coastal estuaries. The proposed generator should be easy to install and maintenance, while the chosen material structure of generator has the corrosion resistance. The generator was also followed the standards and regulations in order to ensure its safety.
{"title":"Designs and Implements the ‘nHy-Fall’ Pico-Hydropower For Waterfall and Canal","authors":"P. Suwanapingkarl, M. Boonthienthong, K. Srivallop, S. Prakobkit","doi":"10.1109/ICPEI49860.2020.9431454","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431454","url":null,"abstract":"The Hydropower is considered as the most efficient power generation of sustainable energy. This type of technology is commonly based on the falling and flowing of the water, and hence the characteristic of the water can be considered as a potential of kinetic energy. Moreover, this technology is relatively most economic, low emission, sustainable, high flexibility and response to the peak demand. It is capable of rapid response to the demand because it can immediately generate the power, when the water falls and/or flows through the turbines. This means that it can contribute the stability of electricity.Nowadays, the nano-technology and characteristic of materials is continually growth and developed, respectively, and hence it is also effected the technology of hydropower turbine such as large construction site, high investment, and then long term of payback period. Therefore, it is necessary to classify the sizing of the Hydropower in order to specify the suitable requirement of design and installation. It is known that there are no international standards and regulations consensus on the definition of sizing the Hydropower. However, it can be approximately classified into as follows; Pico-Hydropower (rated less than 5 kW), Nano-Hydropower (rated less than 10 kW), Micro-Hydro (rated less than 100 kW), Mini-Hydropower (rated less than 1,000 kW), Small-Hydropower (rated less than 6,000 kW) and the upper limit of Hydropower (rated from 6,000 kw up to 30,000 kW), respectively.The paper has been designed and implemented the Pico-Hydropower for waterfall and canal, which calls ‘nHy-Fall’ devices. The prototype devices were carried out at the Sai Yok National Park, Kanchanaburi, Thailand in order to validate and ensure its performance. To achieve the Pico- Hydropower turbine, the mathematic modelling, computer simulation (as MATLAB/Simulink software), computer design (as AutoCAD and/or SolidWorks software) and implementation the prototype was carried out. The proposed ‘nHy- Fall’ devices can mainly support at the waterfall and canal, while it can also install at the riverbank, in the middle of river, bays, shoreline and coastal estuaries. The proposed generator should be easy to install and maintenance, while the chosen material structure of generator has the corrosion resistance. The generator was also followed the standards and regulations in order to ensure its safety.","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":"130115101","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/ICPEI49860.2020.9431544
Chatchai Khuantham, Arkira Sonthitham
This article aims to a spraying robot controlled by application smartphone for pepper farm. Promoting agricultural technology by developing agricultural tools and to help farmers reduce the use of labor in agriculture. Reduce direct chemical exposure from traditional chemical, which was very harmful to the body. The result of their testing for the spraying robot controlled by application smartphone: 1) the testing a Bluetooth signal connection for spraying robot can connected to a constant Bluetooth signal at a distance of up to 50 meters 2) the testing a WiFi signal connection can connected to a constant WiFi signal at a distance of up to 120 meters and 3) the testing power supply 24VDC from battery for spraying robot working continuously at time period 0-90 minutes per full charging in working area about 1,600 square meters, which was speed moving at 5 kilometers per hour. The 30 pepper farmers who have tested the spraying robot for pepper farm were satisfied on this spraying robot at 4.31 was at a high level. Therefore, the results from the testing of the spraying robot. With the usage of modern agricultural technology, farmers can be more comfortable in their careers and be safe from various chemical spray drift.
{"title":"Spraying Robot Controlled by Application Smartphone for Pepper Farm","authors":"Chatchai Khuantham, Arkira Sonthitham","doi":"10.1109/ICPEI49860.2020.9431544","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431544","url":null,"abstract":"This article aims to a spraying robot controlled by application smartphone for pepper farm. Promoting agricultural technology by developing agricultural tools and to help farmers reduce the use of labor in agriculture. Reduce direct chemical exposure from traditional chemical, which was very harmful to the body. The result of their testing for the spraying robot controlled by application smartphone: 1) the testing a Bluetooth signal connection for spraying robot can connected to a constant Bluetooth signal at a distance of up to 50 meters 2) the testing a WiFi signal connection can connected to a constant WiFi signal at a distance of up to 120 meters and 3) the testing power supply 24VDC from battery for spraying robot working continuously at time period 0-90 minutes per full charging in working area about 1,600 square meters, which was speed moving at 5 kilometers per hour. The 30 pepper farmers who have tested the spraying robot for pepper farm were satisfied on this spraying robot at 4.31 was at a high level. Therefore, the results from the testing of the spraying robot. With the usage of modern agricultural technology, farmers can be more comfortable in their careers and be safe from various chemical spray drift.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"64 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":"129727758","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/ICPEI49860.2020.9431455
Supachai Puengsungwan
Organic culture has been widely promoted to famers as the best solution for many kinds of fruits and vegetables. However, the serious issue of organic culture is to optimal control soil moisture. This paper presents a soil moisture sensor based on internet of things (IoT) technology. The prototype IoT based soil moisture sensor has been implemented including with four components: sensing unit, connectivity, data processing and data analysis. The results show that the proposed soil moisture sensor not only shows the real-time soil moisture data but also analyze the soil moisture regulation.
{"title":"IoT based Soil Moisture Sensor for Smart Farming","authors":"Supachai Puengsungwan","doi":"10.1109/ICPEI49860.2020.9431455","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431455","url":null,"abstract":"Organic culture has been widely promoted to famers as the best solution for many kinds of fruits and vegetables. However, the serious issue of organic culture is to optimal control soil moisture. This paper presents a soil moisture sensor based on internet of things (IoT) technology. The prototype IoT based soil moisture sensor has been implemented including with four components: sensing unit, connectivity, data processing and data analysis. The results show that the proposed soil moisture sensor not only shows the real-time soil moisture data but also analyze the soil moisture regulation.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"97 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":"121362241","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/ICPEI49860.2020.9431505
T. Suwanasri, P. Fuangpian, Nattapon Panmala, Jomkun Suntaranurak, C. Suwanasri, Thanachat Thanasettagone, Kantapong Nopparattayaporn, Kittachai Thanomvong
This paper presents an invisible vapor substance as a bird buffer in HV substation to protect the contamination on insulator. The electrical properties of the insulators after spraying an vapor substance was observed by applying four electrical testings such as leakage current, partial discharge, impulse withstand voltage and insulation resistance tests according to international standards in HV laboratory. Three aging suspension insulators with ANSI class 52-3 were used as the test objects with the ratings of 80 kV low frequency dry flashover, 50 kV low frequency wet flashover, and 125 kV positive critical impulse flashover. The results show that small difference of leakage currents as well as partial discharges occur among the clean insulator and bird buffer contaminated insulator. The result of impulse withstand voltage and insulation resistance tests are in acceptance criteria according to the standards.
{"title":"Invisible Vapor Substance for Insulator Contamination Protection from Birds in Substation","authors":"T. Suwanasri, P. Fuangpian, Nattapon Panmala, Jomkun Suntaranurak, C. Suwanasri, Thanachat Thanasettagone, Kantapong Nopparattayaporn, Kittachai Thanomvong","doi":"10.1109/ICPEI49860.2020.9431505","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431505","url":null,"abstract":"This paper presents an invisible vapor substance as a bird buffer in HV substation to protect the contamination on insulator. The electrical properties of the insulators after spraying an vapor substance was observed by applying four electrical testings such as leakage current, partial discharge, impulse withstand voltage and insulation resistance tests according to international standards in HV laboratory. Three aging suspension insulators with ANSI class 52-3 were used as the test objects with the ratings of 80 kV low frequency dry flashover, 50 kV low frequency wet flashover, and 125 kV positive critical impulse flashover. The results show that small difference of leakage currents as well as partial discharges occur among the clean insulator and bird buffer contaminated insulator. The result of impulse withstand voltage and insulation resistance tests are in acceptance criteria according to the standards.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"62 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":"131413193","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/ICPEI49860.2020.9431531
Mintra Trongtorkarn, T. Theppaya, M. Luengchavanon
The Permanent Magnet Synchronous Generators (PMSG) was generally used for low speed wind turbines. A skew magnet (rotor) was practically utilized for reducing the starting torque of the PMSG operating at low wind speeds. However, the thermal conduction in the air-coil (stator) can be effected by the magnet skew angle. The thermal conduction was then measured at three different areas, in the middle, at the surface and between the air-coil. The higher thermal conduction is found out to be located in the middle of the air-coil. When the skew angle was zero, the temperature maintained at 41.2°C for 120 minutes at 250 rpm while a 20 degrees angle skew resulted in the lower temperature at 39.5°C for 120 minutes at the same speed. At the higher turbine speed, 500 rpm, the non-skew magnet generated the temperature of 48.8°C for 120 minutes while the temperatures of a 20 degree angle skew read 46°C for 120 minutes. Overall, the magnet skewed angle at 20 degrees decreased the temperature by approximately 4.13% and 5.74% for 120 minutes at 250 and 500 rpm respectively. Therefore, the skew magnet angle can practically reduce the temperature in PMSGs for applications based on low-speed wind turbines.
{"title":"Relationship between temperature and magnet skew angle in PMSG for low-speed wind applications","authors":"Mintra Trongtorkarn, T. Theppaya, M. Luengchavanon","doi":"10.1109/ICPEI49860.2020.9431531","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431531","url":null,"abstract":"The Permanent Magnet Synchronous Generators (PMSG) was generally used for low speed wind turbines. A skew magnet (rotor) was practically utilized for reducing the starting torque of the PMSG operating at low wind speeds. However, the thermal conduction in the air-coil (stator) can be effected by the magnet skew angle. The thermal conduction was then measured at three different areas, in the middle, at the surface and between the air-coil. The higher thermal conduction is found out to be located in the middle of the air-coil. When the skew angle was zero, the temperature maintained at 41.2°C for 120 minutes at 250 rpm while a 20 degrees angle skew resulted in the lower temperature at 39.5°C for 120 minutes at the same speed. At the higher turbine speed, 500 rpm, the non-skew magnet generated the temperature of 48.8°C for 120 minutes while the temperatures of a 20 degree angle skew read 46°C for 120 minutes. Overall, the magnet skewed angle at 20 degrees decreased the temperature by approximately 4.13% and 5.74% for 120 minutes at 250 and 500 rpm respectively. Therefore, the skew magnet angle can practically reduce the temperature in PMSGs for applications based on low-speed wind turbines.","PeriodicalId":342582,"journal":{"name":"2020 International Conference on Power, Energy and Innovations (ICPEI)","volume":"13 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":"131759398","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/ICPEI49860.2020.9431517
S. Sooksatra
In this paper, multi-module output parallel asymmetrical series resonant converter (SRC) with single-end rectifier is presented. The converter is operated in continuous conduction mode. State-plane approach analysis, design and computer simulation are included. More than one module can be connected together in order to share the load current, so high and scalable load current can be easily handled by adding more modules. Computer simulation is also given in this paper.
{"title":"Multi-Module Output Parallel of Asymmetrical SRC with Single-End Rectifier","authors":"S. Sooksatra","doi":"10.1109/ICPEI49860.2020.9431517","DOIUrl":"https://doi.org/10.1109/ICPEI49860.2020.9431517","url":null,"abstract":"In this paper, multi-module output parallel asymmetrical series resonant converter (SRC) with single-end rectifier is presented. The converter is operated in continuous conduction mode. State-plane approach analysis, design and computer simulation are included. More than one module can be connected together in order to share the load current, so high and scalable load current can be easily handled by adding more modules. Computer simulation is also given in this paper.","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":"130657039","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：