Pub Date : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654747
Tao Li, Xiyou Chen, Zhengying Lang, Xin Jin, Chen Qi, Yijie Wang
This paper presents a wireless power transfer system (WPT) for long-term sensor rotating around an axis on a plane. The system is suitable for powering long-term sensor and does not need to replace the battery periodically. By designing a new type of magnetic coupler, the coupling coefficient between the receiving coil and the transmitting coil can be maintained in a certain range. On the transmitting side, six planar spiral coils are evenly distributed in a circular array, so that the magnetic field on the path of the sensor is always strong. On the receiving side, two planar spiral coils are partially overlapped. The magnetic field generated by the magnetic coupler is analyzed theoretically and simulated by finite element method. The experimental results verify that the WPT system can continuously supply power for 5W load during rotation.
{"title":"Wireless Power Transfer System for Long-term Sensor on Rotating Plane","authors":"Tao Li, Xiyou Chen, Zhengying Lang, Xin Jin, Chen Qi, Yijie Wang","doi":"10.1109/IEACon51066.2021.9654747","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654747","url":null,"abstract":"This paper presents a wireless power transfer system (WPT) for long-term sensor rotating around an axis on a plane. The system is suitable for powering long-term sensor and does not need to replace the battery periodically. By designing a new type of magnetic coupler, the coupling coefficient between the receiving coil and the transmitting coil can be maintained in a certain range. On the transmitting side, six planar spiral coils are evenly distributed in a circular array, so that the magnetic field on the path of the sensor is always strong. On the receiving side, two planar spiral coils are partially overlapped. The magnetic field generated by the magnetic coupler is analyzed theoretically and simulated by finite element method. The experimental results verify that the WPT system can continuously supply power for 5W load during rotation.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132165801","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654719
B. Saranga, U. Premarathne, B. Atapattu
Sediments carried by the rivers cause capacity reduction in reservoirs which impacts the hydro-power generation, effective irrigation management for communities and agricultural sectors. Cost effective measurement tools for accurate prediction of the sedimentation rate is vital in our country. This paper describes the development of an optical sensing based sedimentation rate estimation mechanism. Correlation between Total Suspended Solid (TSS) and turbidity (NTU) is developed during sensor calibration stage. Empirical data samples (from the Uma oya limb to Rantambe reservoir in Sri Lanka) were collected over a period of 25 days and used for calibration. Under laboratory conditions, the results from the linear regression analysis revealed that the relationship of the Turbidity and the TSS is 1NTU is equal to 1.5 mg/l. The ISO 7027 Turbidity Technique method was used to determine the concentration of suspended particles in water samples and tested using the optical sensing mechanism. Correlation between turbidity and sensor value was developed and the quantity of sediment in mg/s was determined. Using the optical sensing mechanism, the results evidenced reasonably accurate for short term sediment rate estimation.
{"title":"Stream Sediment Rate Estimation using Optical Sensing","authors":"B. Saranga, U. Premarathne, B. Atapattu","doi":"10.1109/IEACon51066.2021.9654719","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654719","url":null,"abstract":"Sediments carried by the rivers cause capacity reduction in reservoirs which impacts the hydro-power generation, effective irrigation management for communities and agricultural sectors. Cost effective measurement tools for accurate prediction of the sedimentation rate is vital in our country. This paper describes the development of an optical sensing based sedimentation rate estimation mechanism. Correlation between Total Suspended Solid (TSS) and turbidity (NTU) is developed during sensor calibration stage. Empirical data samples (from the Uma oya limb to Rantambe reservoir in Sri Lanka) were collected over a period of 25 days and used for calibration. Under laboratory conditions, the results from the linear regression analysis revealed that the relationship of the Turbidity and the TSS is 1NTU is equal to 1.5 mg/l. The ISO 7027 Turbidity Technique method was used to determine the concentration of suspended particles in water samples and tested using the optical sensing mechanism. Correlation between turbidity and sensor value was developed and the quantity of sediment in mg/s was determined. Using the optical sensing mechanism, the results evidenced reasonably accurate for short term sediment rate estimation.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"24 Suppl D 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128399508","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654777
Kruthi Doddabasappla, R. Vyas
Human activity recognition using sensors has wider applications such as daily activity and health monitoring, robotics, security purpose, monitoring human beings in the workplace, and others. Activities such as sitting, standing, walking, walking upstairs, and walking downstairs are commonly classified. Cough event detection and counting have always been the most important research topic in the medical field. We aim to study the non-cough and cough activity in human beings at five body positions of varying heights subjects. Previous studies have shown that cough during walking can be accurately detected with 92, 73, 62, and 82% accuracy at the chest, stomach, shirt pocket, and upper hand respectively from raw acceleration signals in the time domain. We analyzed the frequency domain characteristics, the Spectral Maximum (SM), and Spectral Summation (SS) at four frequency bands in the 0–20 Hz range for the accelerometer axis: x, y, and z. Our study reveals a 24 – 142 % increase along the Y-axis and a 14 – 146 % increase along the Z-axis in SS of cough signal compared to a non-cough signal at the five-position considered in our study. Evaluation of the 3D plot of spectral features shows the clear difference of a cough signal from a non-cough.
{"title":"Analysis of Frequency Spectral Features of Coughing Activity from Tri-Axial Accelerometer sensor at Multiple Body Points","authors":"Kruthi Doddabasappla, R. Vyas","doi":"10.1109/IEACon51066.2021.9654777","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654777","url":null,"abstract":"Human activity recognition using sensors has wider applications such as daily activity and health monitoring, robotics, security purpose, monitoring human beings in the workplace, and others. Activities such as sitting, standing, walking, walking upstairs, and walking downstairs are commonly classified. Cough event detection and counting have always been the most important research topic in the medical field. We aim to study the non-cough and cough activity in human beings at five body positions of varying heights subjects. Previous studies have shown that cough during walking can be accurately detected with 92, 73, 62, and 82% accuracy at the chest, stomach, shirt pocket, and upper hand respectively from raw acceleration signals in the time domain. We analyzed the frequency domain characteristics, the Spectral Maximum (SM), and Spectral Summation (SS) at four frequency bands in the 0–20 Hz range for the accelerometer axis: x, y, and z. Our study reveals a 24 – 142 % increase along the Y-axis and a 14 – 146 % increase along the Z-axis in SS of cough signal compared to a non-cough signal at the five-position considered in our study. Evaluation of the 3D plot of spectral features shows the clear difference of a cough signal from a non-cough.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134032987","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654792
V. Pm, Hirshik Ram S, Pratik Uthan, Veeramani V, S. Subramaniam
This paper explores the electrical equivalent model of a Li-Ion battery and its resistance estimation. The energy loss in the battery in one cycle of charging and discharging is used to calculate the internal resistance of the battery by application of Joule's Law of Heating. The potential drop across the resistance thus obtained is compounded with the measured terminal voltage to predict the Open Circuit Voltage (OCV) of the battery. The tabulated OCV and State of Charge (SoC) values are fed into a Deep Neural Network model in MATLAB/Simulink to establish a relationship between the SOC and OCV. Further a Simulink model was developed to verify the accuracy of the Neural Network. The results obtained through the simulation closely follow the estimated OCV values.
{"title":"Estimating the Internal Resistance of Li-Ion Battery with Joule's Law to find the Open Circuit Voltage","authors":"V. Pm, Hirshik Ram S, Pratik Uthan, Veeramani V, S. Subramaniam","doi":"10.1109/IEACon51066.2021.9654792","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654792","url":null,"abstract":"This paper explores the electrical equivalent model of a Li-Ion battery and its resistance estimation. The energy loss in the battery in one cycle of charging and discharging is used to calculate the internal resistance of the battery by application of Joule's Law of Heating. The potential drop across the resistance thus obtained is compounded with the measured terminal voltage to predict the Open Circuit Voltage (OCV) of the battery. The tabulated OCV and State of Charge (SoC) values are fed into a Deep Neural Network model in MATLAB/Simulink to establish a relationship between the SOC and OCV. Further a Simulink model was developed to verify the accuracy of the Neural Network. The results obtained through the simulation closely follow the estimated OCV values.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116425752","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654499
Usman Abubakar, Xiao-yuan Wang, Sayyed Haleem Shah, Sadiq Ur rahman
When a high-speed permanent magnet synchronous machine (HSPMSM) operates at full load condition, maximum temperature rises. The most temperature-sensitive part is the winding insulation that can affect the machine's lifespan and reliability. Thus, winding thermal optimization is essential. In this paper, the 225kW 34500 rpm PMSM with totally enclosed fan cooled axial ventilation system (TEFCAVS) has been taken as an example to be used in blower applications. Firstly, the fast estimation for the distribution of airflow and temperature by LPTN is predicted for the machine under full load conditions; then machine's hotspot temperature was identified. Secondly, parametric thermal sensitivity is conducted by design optimization Simulink's toolbox considering critical-parameters of TEFCAVS. The parameters with a remarkable influence on winding maximum temperatures, such as slot's linear thermal conductivity, lamination to housing interface contact, and airgap heat transfer, are chosen as a thermal design variable. The best variable can be obtained regarding the magnitude of influence and trend on mitigating maximum winding temperature. An investigation shows that the maximum winding temperature is mitigated significantly by the determined optimal thermal parameters. Finally, the 225kW HSPMSM is prototyped and tested with optimal thermal parameters; the winding temperature test results are then correlated with estimated results to validate the optimized thermal design.
{"title":"Parametric Thermal Sensitivity Analysis of 225kW High Speed PMSM for Blower Application","authors":"Usman Abubakar, Xiao-yuan Wang, Sayyed Haleem Shah, Sadiq Ur rahman","doi":"10.1109/IEACon51066.2021.9654499","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654499","url":null,"abstract":"When a high-speed permanent magnet synchronous machine (HSPMSM) operates at full load condition, maximum temperature rises. The most temperature-sensitive part is the winding insulation that can affect the machine's lifespan and reliability. Thus, winding thermal optimization is essential. In this paper, the 225kW 34500 rpm PMSM with totally enclosed fan cooled axial ventilation system (TEFCAVS) has been taken as an example to be used in blower applications. Firstly, the fast estimation for the distribution of airflow and temperature by LPTN is predicted for the machine under full load conditions; then machine's hotspot temperature was identified. Secondly, parametric thermal sensitivity is conducted by design optimization Simulink's toolbox considering critical-parameters of TEFCAVS. The parameters with a remarkable influence on winding maximum temperatures, such as slot's linear thermal conductivity, lamination to housing interface contact, and airgap heat transfer, are chosen as a thermal design variable. The best variable can be obtained regarding the magnitude of influence and trend on mitigating maximum winding temperature. An investigation shows that the maximum winding temperature is mitigated significantly by the determined optimal thermal parameters. Finally, the 225kW HSPMSM is prototyped and tested with optimal thermal parameters; the winding temperature test results are then correlated with estimated results to validate the optimized thermal design.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124733744","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654793
Saharudin Kamaroszaman, Raja Nor Firdaus Kashfi, K. Karim, Suhairi Rizuan Che Ahmad, K. Tashiro, Zulkufli Zakaria
This research paper is about the numerical analysis of the brushless DC (BLDC) motor for indoor High Volume Low Speed (HVLS) fans. The growing need for energy-saving products has increased the usage of HVLS fans in small and medium-sized interior spaces. However, the bulky motor design has limited the fan capability. This issue is often addressed by utilizing a high torque density motor solution, and the outer rotor BLDC motor is the optimum solution. Therefore, the objective of this research study is to conduct a numerical analysis of an Outer Rotor BLDC (ORBLDC) motor for HVLS application. The Finite Element Method (FEM) is used to determine the Stator Teeth Width ($W_{text{stat}}$) and the configuration between Magnet Height ($H_{text{mag}}$) and Stack Length ($L_{text{stack}}$) via electromagnetic analysis approach. The final combination of 19 mm $W_{text{stat}}, 14$ mm $H_{text{mag}}$ and 30 mm $L_{text{stack}}$ produces the desired performance. In conclusion, this research paper discusses the ORBLDC motor design simulation and its performance. The simulation technique reduces the cost risk assessment and assists the motor designer in creating the best configuration model prior to fabrication.
{"title":"Numerical Analysis of Brushless DC Motor for Indoor High Volume Low Speed Fan","authors":"Saharudin Kamaroszaman, Raja Nor Firdaus Kashfi, K. Karim, Suhairi Rizuan Che Ahmad, K. Tashiro, Zulkufli Zakaria","doi":"10.1109/IEACon51066.2021.9654793","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654793","url":null,"abstract":"This research paper is about the numerical analysis of the brushless DC (BLDC) motor for indoor High Volume Low Speed (HVLS) fans. The growing need for energy-saving products has increased the usage of HVLS fans in small and medium-sized interior spaces. However, the bulky motor design has limited the fan capability. This issue is often addressed by utilizing a high torque density motor solution, and the outer rotor BLDC motor is the optimum solution. Therefore, the objective of this research study is to conduct a numerical analysis of an Outer Rotor BLDC (ORBLDC) motor for HVLS application. The Finite Element Method (FEM) is used to determine the Stator Teeth Width ($W_{text{stat}}$) and the configuration between Magnet Height ($H_{text{mag}}$) and Stack Length ($L_{text{stack}}$) via electromagnetic analysis approach. The final combination of 19 mm $W_{text{stat}}, 14$ mm $H_{text{mag}}$ and 30 mm $L_{text{stack}}$ produces the desired performance. In conclusion, this research paper discusses the ORBLDC motor design simulation and its performance. The simulation technique reduces the cost risk assessment and assists the motor designer in creating the best configuration model prior to fabrication.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130063453","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654669
Hyunchul Joo, Kyungchul Kwak, Intai Kim, D. Lee
In this paper, we propose the fast/on-time channel zapping scheme using a cache server over IPTV (Internet Protocol TeleVision) multicast system. The cache server of the proposed scheme unicasts the cached data preceded in time of the first PCR (Program Clock Reference) of multicast stream on the switching channel to STB (Set-Top Box) device while minimizing the amount of unicasting data. STB device then adjusts PCR of both unicasting data and multicasting data for fast/on-time playback of the switching channel. Finally, we prove enhanced performance of the proposed scheme through evaluations in the commercial IPTV network.
{"title":"Fast/On-time Channel Zapping Scheme using a Cache Server over IPTV Multicast System","authors":"Hyunchul Joo, Kyungchul Kwak, Intai Kim, D. Lee","doi":"10.1109/IEACon51066.2021.9654669","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654669","url":null,"abstract":"In this paper, we propose the fast/on-time channel zapping scheme using a cache server over IPTV (Internet Protocol TeleVision) multicast system. The cache server of the proposed scheme unicasts the cached data preceded in time of the first PCR (Program Clock Reference) of multicast stream on the switching channel to STB (Set-Top Box) device while minimizing the amount of unicasting data. STB device then adjusts PCR of both unicasting data and multicasting data for fast/on-time playback of the switching channel. Finally, we prove enhanced performance of the proposed scheme through evaluations in the commercial IPTV network.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128857082","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654490
Shiyao Zhou, Zi-qiang Chen, Jianyu Lan, M. Dong
Fault diagnosis has great significances for reducing the failures and improving the reliability of Li-ion battery systems. However, there are few researches on cell open circuit (COC) fault diagnostic for the series-parallel connected battery pack before. In this study, a voltage correlation coefficient-based method and a dual extended Kalman filter (DEKF) are proposed to detect the COC fault. Then, performances of these two methods are compared by taking several COC fault simulation experiment. Experiments with a 4S-3P battery pack under different operating conditions are used to verify two proposed diagnostic approaches. The experimental results demonstrate that the voltage correlation coefficient-based method with the merit of lower misdiagnosis rate, shorter diagnoses delay and low computational cost is more suitable for COC fault detection than DEKF-based method.
{"title":"Cell Open Circuit Fault Diagnostic for Series-Parallel Connected Li-ion Battery Pack","authors":"Shiyao Zhou, Zi-qiang Chen, Jianyu Lan, M. Dong","doi":"10.1109/IEACon51066.2021.9654490","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654490","url":null,"abstract":"Fault diagnosis has great significances for reducing the failures and improving the reliability of Li-ion battery systems. However, there are few researches on cell open circuit (COC) fault diagnostic for the series-parallel connected battery pack before. In this study, a voltage correlation coefficient-based method and a dual extended Kalman filter (DEKF) are proposed to detect the COC fault. Then, performances of these two methods are compared by taking several COC fault simulation experiment. Experiments with a 4S-3P battery pack under different operating conditions are used to verify two proposed diagnostic approaches. The experimental results demonstrate that the voltage correlation coefficient-based method with the merit of lower misdiagnosis rate, shorter diagnoses delay and low computational cost is more suitable for COC fault detection than DEKF-based method.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127732822","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654658
Md. Tariqul Islam, M. H. Maruf, ASM Shihavuddin, R. H. Ashique, Sourav Barua, M. Rahman
This paper presents a high-temperature superconductor (HTS) based high frequency magnetic linked three-phase twenty-one-level 11kV asymmetric multilevel inverter for grid integrated solar photovoltaic system. The proposed topology uses the identical cascaded H-bridge seven-level inverter with a triangular voltage sequence for generating desired voltage levels. In addition, a low-frequency modulation technique is developed to reduce the total harmonic distortion and the switching losses. A high-frequency transformer as the magnetic link is used to reduce the size and weight of the inverter. Simulation results reveal that the proposed topology features 61.76% of reduction of total blocking voltage and 78.90% of total harmonic distortion as compared to the conventional counterpart. The proposed topology also employs a reduced component count as compared with the existing twenty-one-level inverter topologies that are commonly used for various applications.
{"title":"Modeling and Analysis of High Frequency Magnetic Link-Based 11kVAsymmetric 21 level Inverter for Solar Photovoltaic Systems","authors":"Md. Tariqul Islam, M. H. Maruf, ASM Shihavuddin, R. H. Ashique, Sourav Barua, M. Rahman","doi":"10.1109/IEACon51066.2021.9654658","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654658","url":null,"abstract":"This paper presents a high-temperature superconductor (HTS) based high frequency magnetic linked three-phase twenty-one-level 11kV asymmetric multilevel inverter for grid integrated solar photovoltaic system. The proposed topology uses the identical cascaded H-bridge seven-level inverter with a triangular voltage sequence for generating desired voltage levels. In addition, a low-frequency modulation technique is developed to reduce the total harmonic distortion and the switching losses. A high-frequency transformer as the magnetic link is used to reduce the size and weight of the inverter. Simulation results reveal that the proposed topology features 61.76% of reduction of total blocking voltage and 78.90% of total harmonic distortion as compared to the conventional counterpart. The proposed topology also employs a reduced component count as compared with the existing twenty-one-level inverter topologies that are commonly used for various applications.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128984135","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 : 2021-11-22DOI: 10.1109/IEACon51066.2021.9654693
Antoine Ansart, J. Juang
The paper considers the problem of maintaining the circular motion of a group of agents under Generalized Cyclic Pursuit (GCP) law, which exploits the property of imaginary-axis poles to achieve a sustainable cyclic movement. However, the system is not robust against model uncertainties. The objective of the paper is to present a method to sustain the motion of the group of agents under this law on a desired circle. Emphasis is placed upon the robustness of the system via an adaptive Line of Sight (L.o.S) angle, as well as formation preservation.
{"title":"Circular Formation Maintenance under Single Integrator Generalized Cyclic Pursuit","authors":"Antoine Ansart, J. Juang","doi":"10.1109/IEACon51066.2021.9654693","DOIUrl":"https://doi.org/10.1109/IEACon51066.2021.9654693","url":null,"abstract":"The paper considers the problem of maintaining the circular motion of a group of agents under Generalized Cyclic Pursuit (GCP) law, which exploits the property of imaginary-axis poles to achieve a sustainable cyclic movement. However, the system is not robust against model uncertainties. The objective of the paper is to present a method to sustain the motion of the group of agents under this law on a desired circle. Emphasis is placed upon the robustness of the system via an adaptive Line of Sight (L.o.S) angle, as well as formation preservation.","PeriodicalId":397039,"journal":{"name":"2021 IEEE Industrial Electronics and Applications Conference (IEACon)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122944741","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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