Pub Date : 2018-12-22DOI: 10.1109/IESES.2018.8349932
G. Lauss, F. Andrén, F. Leimgruber, T. Strasser
Real-time simulation methods for investigations on electric networks and integration of grid connected generation units are increasingly in the focus of ongoing research areas. While laboratory testing methods are the predominant method for the verification of safety and quality related features of grid-connected generation units in the past, load flow modeling verification methods have been integrated in state-of-the-art standardization frameworks recently. The next step is comprised in real-time simulation methodologies applied for compliance testing of entire power electronic systems integrated in power distribution networks. The Controller Hardware-in-the-Loop (CHIL) approach is an appropriate methodology that combines numerical simulations with software modeling approaches and classical hardware testing in labs. Control boards represent the hardware device directly connected to the power electronic periphery, which is entirely simulated in a real-time simulation environment. Hereby, input signals from voltage and current measurements and output signals for power system control are exchanged in real-time. Thanks to this setup the testing of the true behavior of entire generation units within the electric network can be emulated precisely. With the application of CHIL a shorter time to market and a lower risk in the development phase can be achieved. However, an analysis from realized CHIL experiments shows the need for more harmonized procedures. This paper addresses this topic and provides an outlook about necessary future CHIL standardization needs.
{"title":"Analyzing standardization needs for CHIL-based testing of power systems and components","authors":"G. Lauss, F. Andrén, F. Leimgruber, T. Strasser","doi":"10.1109/IESES.2018.8349932","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349932","url":null,"abstract":"Real-time simulation methods for investigations on electric networks and integration of grid connected generation units are increasingly in the focus of ongoing research areas. While laboratory testing methods are the predominant method for the verification of safety and quality related features of grid-connected generation units in the past, load flow modeling verification methods have been integrated in state-of-the-art standardization frameworks recently. The next step is comprised in real-time simulation methodologies applied for compliance testing of entire power electronic systems integrated in power distribution networks. The Controller Hardware-in-the-Loop (CHIL) approach is an appropriate methodology that combines numerical simulations with software modeling approaches and classical hardware testing in labs. Control boards represent the hardware device directly connected to the power electronic periphery, which is entirely simulated in a real-time simulation environment. Hereby, input signals from voltage and current measurements and output signals for power system control are exchanged in real-time. Thanks to this setup the testing of the true behavior of entire generation units within the electric network can be emulated precisely. With the application of CHIL a shorter time to market and a lower risk in the development phase can be achieved. However, an analysis from realized CHIL experiments shows the need for more harmonized procedures. This paper addresses this topic and provides an outlook about necessary future CHIL standardization needs.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130738244","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 : 2018-04-26DOI: 10.1109/IESES.2018.8349905
Oleksandr Veligorskyi, M. Khomenko, R. Chakirov, Y. Vagapov
This paper provides a performance analysis of a wearable photovoltaic system mounted on the outer surface of a backpack. Three types of photovoltaic materials, commonly used for electricity generation, have been investigated under various conditions including sun irradiance, angle-of-incidence and sun inclination. The results of the investigation have shown that the system equipped with the rigid mono-Si panels performs 3.5 to 4.9 times better than the system equipped with a-Si flexible PV modules. The average power generated by the wearable photovoltaic system is about 30% of the maximum installed power for any photovoltaic type. This paper presents the test data resulting from the evaluation of the daily energy production of a wearable photovoltaic power supply.
{"title":"Performance analysis of a wearable photovoltaic system","authors":"Oleksandr Veligorskyi, M. Khomenko, R. Chakirov, Y. Vagapov","doi":"10.1109/IESES.2018.8349905","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349905","url":null,"abstract":"This paper provides a performance analysis of a wearable photovoltaic system mounted on the outer surface of a backpack. Three types of photovoltaic materials, commonly used for electricity generation, have been investigated under various conditions including sun irradiance, angle-of-incidence and sun inclination. The results of the investigation have shown that the system equipped with the rigid mono-Si panels performs 3.5 to 4.9 times better than the system equipped with a-Si flexible PV modules. The average power generated by the wearable photovoltaic system is about 30% of the maximum installed power for any photovoltaic type. This paper presents the test data resulting from the evaluation of the daily energy production of a wearable photovoltaic power supply.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128481006","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 : 2018-04-26DOI: 10.1109/IESES.2018.8349923
M. Watson, D. Gladwin, T. Prescott, Sebastian O. Conran
Remote inspection is a long standing field of interest for robotics researchers, in which robots are used to undertake inspection tasks in environments too hazardous or inaccessible to be directly entered by a human. Recent advances in grid-scale battery storage have created a new set of unique hazardous indoor spaces with characteristics unsuitable for the deployment of existing teleoperated inspection robots. This paper outlines the problems encountered in these new environments, analyses existing approaches to robotic platform design, and proposes a better suited novel platform design, based on a dynamically balancing arrangement of Mecanum wheels. Its inverse kinematic and dynamics models are developed, a proof of concept prototype is constructed, and a constrained predictive controller is derived from the developed model. Experimental results demonstrate the efficacy of this new concept.
{"title":"Design and control of a novel omnidirectional dynamically balancing platform for remote inspection of confined and cluttered environments","authors":"M. Watson, D. Gladwin, T. Prescott, Sebastian O. Conran","doi":"10.1109/IESES.2018.8349923","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349923","url":null,"abstract":"Remote inspection is a long standing field of interest for robotics researchers, in which robots are used to undertake inspection tasks in environments too hazardous or inaccessible to be directly entered by a human. Recent advances in grid-scale battery storage have created a new set of unique hazardous indoor spaces with characteristics unsuitable for the deployment of existing teleoperated inspection robots. This paper outlines the problems encountered in these new environments, analyses existing approaches to robotic platform design, and proposes a better suited novel platform design, based on a dynamically balancing arrangement of Mecanum wheels. Its inverse kinematic and dynamics models are developed, a proof of concept prototype is constructed, and a constrained predictive controller is derived from the developed model. Experimental results demonstrate the efficacy of this new concept.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130798065","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 : 2018-04-26DOI: 10.1109/IESES.2018.8349902
Madhawa Weerasekara, M. Vilathgamuwa, Yateendra Mishra
Use of Mathematical Morphology (MM) based filters to detect faults in power systems have been discussed in recent literature. These studies have been predominantly focused on AC systems and associated arc faults. However, fault detection applications based on MM filtering in DC systems have not been adequately discussed. This paper presents how MM based filtering techniques and its composite operations could be used to successfully detect arc faults in a PV system. Throughout the analysis, series and parallel arc fault signatures obtained from an actual PV system with maximum power point tracking (MPPT) control is used. Effect of MM parameters on detection sensitivity is explained.
{"title":"Detection of high impedance faults in PV systems using mathematical morphology","authors":"Madhawa Weerasekara, M. Vilathgamuwa, Yateendra Mishra","doi":"10.1109/IESES.2018.8349902","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349902","url":null,"abstract":"Use of Mathematical Morphology (MM) based filters to detect faults in power systems have been discussed in recent literature. These studies have been predominantly focused on AC systems and associated arc faults. However, fault detection applications based on MM filtering in DC systems have not been adequately discussed. This paper presents how MM based filtering techniques and its composite operations could be used to successfully detect arc faults in a PV system. Throughout the analysis, series and parallel arc fault signatures obtained from an actual PV system with maximum power point tracking (MPPT) control is used. Effect of MM parameters on detection sensitivity is explained.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129806083","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 : 2018-04-25DOI: 10.1109/IESES.2018.8349904
Zhongting Tang, M. Su, Yao Sun, Hui Wang, Bin Guo, Yunfan Yang
The zero-crossing distortion (ZCD) is a common problem in Single-phase transformerless photovoltaic (PV) inverter. By establishing the mathematical model of the HERIC type inverter which is proved to be a mainstream transformerless PV inverter, the result for causing the ZCD is presented. To suppressing the ZCD while achieve high efficiency and reactive power capability, a hybrid unipolar pulse width modulation (UP-PWM) is proposed. The proposed method adopts grid frequency unipolar pulse width modulation (GFUP-PWM) when outputting active power. While generating reactive power, the leg switches are all closed, and only the freewheeling switches work at high frequency. Aiming at reducing the ZCD, a modified high frequency unipolar pulse width modulation (HFUP-PWM) is proposed near the voltage and current zero-crossing point (ZCP) regions. And the duty cycle is adjusted to compensate the narrow pulse limit and dead zone in HFUP-PWM. The proposed scheme has high efficiency and good power quality while provide reactive power support. Finally, the effectiveness of the proposed modulation scheme is verified by the simulations results based on a 4-kW inverter at 20-kHz switching frequency.
{"title":"Hybrid UP-PWM for single-phase transformerless photovoltaic inverter to improve zero-crossing distortion","authors":"Zhongting Tang, M. Su, Yao Sun, Hui Wang, Bin Guo, Yunfan Yang","doi":"10.1109/IESES.2018.8349904","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349904","url":null,"abstract":"The zero-crossing distortion (ZCD) is a common problem in Single-phase transformerless photovoltaic (PV) inverter. By establishing the mathematical model of the HERIC type inverter which is proved to be a mainstream transformerless PV inverter, the result for causing the ZCD is presented. To suppressing the ZCD while achieve high efficiency and reactive power capability, a hybrid unipolar pulse width modulation (UP-PWM) is proposed. The proposed method adopts grid frequency unipolar pulse width modulation (GFUP-PWM) when outputting active power. While generating reactive power, the leg switches are all closed, and only the freewheeling switches work at high frequency. Aiming at reducing the ZCD, a modified high frequency unipolar pulse width modulation (HFUP-PWM) is proposed near the voltage and current zero-crossing point (ZCP) regions. And the duty cycle is adjusted to compensate the narrow pulse limit and dead zone in HFUP-PWM. The proposed scheme has high efficiency and good power quality while provide reactive power support. Finally, the effectiveness of the proposed modulation scheme is verified by the simulations results based on a 4-kW inverter at 20-kHz switching frequency.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126766203","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 : 2018-04-25DOI: 10.1109/IESES.2018.8349857
Bo-Hong Lin, Jiann-Fuh Chen, Chetmun Liu, Dai-Wei Lai
This paper proposes a novel nonisolated converter topology with high step-down conversion ratio for high current and low voltage application, such as voltage regulator modules (VRM). The proposed converter is based on several existed techniques such as coupled-inductor, switched capacitor and interleaved technique. Compared to a conventional two-phase buck converter. The novel converter is capable of delivering larger current to the output load by two coupled-inductors with interleaved technique. Futhermore, it features an inherent current sharing capability, which can balance the load current and reduce the output current ripple. Lastly, a converter with 48V input voltage, 1V output voltage and 30W output power is implemented to prove the feasibility of proposed converter. The highest efficiency is around 90.2% when operating at 3 W and the efficiency is 79.3% at full load.
{"title":"Design and implementation of a high step-down interleaved DC-DC converter","authors":"Bo-Hong Lin, Jiann-Fuh Chen, Chetmun Liu, Dai-Wei Lai","doi":"10.1109/IESES.2018.8349857","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349857","url":null,"abstract":"This paper proposes a novel nonisolated converter topology with high step-down conversion ratio for high current and low voltage application, such as voltage regulator modules (VRM). The proposed converter is based on several existed techniques such as coupled-inductor, switched capacitor and interleaved technique. Compared to a conventional two-phase buck converter. The novel converter is capable of delivering larger current to the output load by two coupled-inductors with interleaved technique. Futhermore, it features an inherent current sharing capability, which can balance the load current and reduce the output current ripple. Lastly, a converter with 48V input voltage, 1V output voltage and 30W output power is implemented to prove the feasibility of proposed converter. The highest efficiency is around 90.2% when operating at 3 W and the efficiency is 79.3% at full load.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126935120","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 : 2018-04-25DOI: 10.1109/IESES.2018.8349862
Li-An Hsu, T. Liang, Wei-Jing Tseng, Yu-Meng Lin
In this paper, a multiple-output dimmable LED driver with flyback converter is designed and implemented. The sequences and conducting times of red (R), green (G), and blue (B) control switches are determined by the voltage level from the primary-side digital signal processor. The flyback converter with primary-side control is operated in quasi-resonant mode, frequency limitation with the valley switching mode, and frequency reduction mode according to the dimming level and input voltage conditions. Finally, a 20 W flyback LED driver for red (24.5 V/ 0.2 A), green (36.8 V/ 0.2 A), and blue (37.5 V/ 0.2 A) LED outputs with the universal input voltages 90–264 Vrms is designed and implemented. The dimming range for each output can be varied from 5 %–100 %. The line regulation for 5 %–100 % dimming level of RGB outputs is within 7 %. The maximum errors for the non-dimming (100 % dimming) and dimming conditions are 2.9 mA and 3.6 mA, respectively. The highest system efficiency at full load condition is 85.54 %.
{"title":"Multiple-output dimmable LED driver with flyback converter","authors":"Li-An Hsu, T. Liang, Wei-Jing Tseng, Yu-Meng Lin","doi":"10.1109/IESES.2018.8349862","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349862","url":null,"abstract":"In this paper, a multiple-output dimmable LED driver with flyback converter is designed and implemented. The sequences and conducting times of red (R), green (G), and blue (B) control switches are determined by the voltage level from the primary-side digital signal processor. The flyback converter with primary-side control is operated in quasi-resonant mode, frequency limitation with the valley switching mode, and frequency reduction mode according to the dimming level and input voltage conditions. Finally, a 20 W flyback LED driver for red (24.5 V/ 0.2 A), green (36.8 V/ 0.2 A), and blue (37.5 V/ 0.2 A) LED outputs with the universal input voltages 90–264 Vrms is designed and implemented. The dimming range for each output can be varied from 5 %–100 %. The line regulation for 5 %–100 % dimming level of RGB outputs is within 7 %. The maximum errors for the non-dimming (100 % dimming) and dimming conditions are 2.9 mA and 3.6 mA, respectively. The highest system efficiency at full load condition is 85.54 %.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133661182","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 : 2018-04-25DOI: 10.1109/IESES.2018.8349894
Bin Guo, M. Su, Jian Yang, Jing Ou, Zhongting Tang, Bin Cheng, Ming Liu
In this paper, a hybrid control strategy based on modified repetitive control (MRC) and multi-loop control are presented for single-phase photovoltaic (PV) inverter in stand-alone mode. Multi-loop controller are adopted to gain good dynamic performance, while a plug-in modified repetitive controller is proposed to achieve zero steady-state error for sinusoidal reference. In addition, in order to solve the contradiction between stability and control performance of the repetitive controller, the relationship between control performance and robustness is elaborated, and the optimization method of repetitive controller is presented, which increased the freedom to design the compensator. The stability of overall system has been analyzed and the explicit optimization procedures of repetitive controller have been proposed. Simulation and experimental results confirm that the proposed strategy offers good-quality sinusoidal voltage with nearly zero-steady state and low total harmonic distortion (THD) under different load conditions.
{"title":"A hybrid control strategy based on modified repetitive control for single-phase photovoltaic inverter in stand-alone mode","authors":"Bin Guo, M. Su, Jian Yang, Jing Ou, Zhongting Tang, Bin Cheng, Ming Liu","doi":"10.1109/IESES.2018.8349894","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349894","url":null,"abstract":"In this paper, a hybrid control strategy based on modified repetitive control (MRC) and multi-loop control are presented for single-phase photovoltaic (PV) inverter in stand-alone mode. Multi-loop controller are adopted to gain good dynamic performance, while a plug-in modified repetitive controller is proposed to achieve zero steady-state error for sinusoidal reference. In addition, in order to solve the contradiction between stability and control performance of the repetitive controller, the relationship between control performance and robustness is elaborated, and the optimization method of repetitive controller is presented, which increased the freedom to design the compensator. The stability of overall system has been analyzed and the explicit optimization procedures of repetitive controller have been proposed. Simulation and experimental results confirm that the proposed strategy offers good-quality sinusoidal voltage with nearly zero-steady state and low total harmonic distortion (THD) under different load conditions.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"309 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131801672","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 : 2018-04-25DOI: 10.1109/IESES.2018.8349859
Yu-Lin Chen, Jiann-Fuh Chen, Dai-Wei Lai
The common buck converter is used the pulse width modulation (PWM) mode under the heavy load and the pulse frequency modulation (PFM) mode under the light load to obtain the high efficiency. The control method, switching the PWM mode and the PFM mode automatically depend on the different loads, needs the current sensor to judge whether the inductor current is zero or not. The paper uses the no current sensing technology which switches the two modes automatically without the current sensor. Use the field programmable gate array (FPGA) to verify the functions and implement a buck converter which has 3∼4.2 V input voltage, 1.2 V output voltage and 86 % highest efficiency under 0.5 A output current. After the FPGA verification, the control circuit has been implemented in TSMC 1P6M 0.18 μm CMOS technology.
{"title":"Dual mode digital buck converter controller without current sensor","authors":"Yu-Lin Chen, Jiann-Fuh Chen, Dai-Wei Lai","doi":"10.1109/IESES.2018.8349859","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349859","url":null,"abstract":"The common buck converter is used the pulse width modulation (PWM) mode under the heavy load and the pulse frequency modulation (PFM) mode under the light load to obtain the high efficiency. The control method, switching the PWM mode and the PFM mode automatically depend on the different loads, needs the current sensor to judge whether the inductor current is zero or not. The paper uses the no current sensing technology which switches the two modes automatically without the current sensor. Use the field programmable gate array (FPGA) to verify the functions and implement a buck converter which has 3∼4.2 V input voltage, 1.2 V output voltage and 86 % highest efficiency under 0.5 A output current. After the FPGA verification, the control circuit has been implemented in TSMC 1P6M 0.18 μm CMOS technology.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133093647","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 : 2018-02-02DOI: 10.1109/IESES.2018.8349884
A. Ullah, T. Lie, K. Gunawardane, N. Nair
Circuit breaker is a vital and sophisticated part of protection accessories in power system. An arc model of a circuit breaker can determine the dynamic and static feature for arcing directed by a power circuit. The idea of HTS Circuit Breaker (HTSCB) evolves with the concept of HTS contacts in liquid nitrogen arc medium. Browne's HTS arc model for HTSCB and its characteristics were developed and investigated earlier in order to address the arcing limitations of existing circuit breakers for HTS power applications. The model was mainly developed from the classical arcing equations. In this paper, the same arc model is investigated for the functionality of arc characteristics simulation response. It is found the arc model has closed relationship with time constant, reference voltage and other parameters. The parameter sweep technique for minimizing the arcing time of HTS arc model parameters shows the trend of arcing voltage and current from the change of arc model's parameters. A test bed environment is developed in MATLAB® Simulink by using the final parameter values to perform the interruption scenario of HTSCB. The results deal with different arcing terms like arc current peak, arcing time, fault duration, transient results of HTS arc model and the wave form transition tendency. Finally, the results are compared with the experimental analysis and found in good agreement.
{"title":"Arcing behaviour of a potential high-temperature superconductor (HTS) circuit breaker arc model","authors":"A. Ullah, T. Lie, K. Gunawardane, N. Nair","doi":"10.1109/IESES.2018.8349884","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349884","url":null,"abstract":"Circuit breaker is a vital and sophisticated part of protection accessories in power system. An arc model of a circuit breaker can determine the dynamic and static feature for arcing directed by a power circuit. The idea of HTS Circuit Breaker (HTSCB) evolves with the concept of HTS contacts in liquid nitrogen arc medium. Browne's HTS arc model for HTSCB and its characteristics were developed and investigated earlier in order to address the arcing limitations of existing circuit breakers for HTS power applications. The model was mainly developed from the classical arcing equations. In this paper, the same arc model is investigated for the functionality of arc characteristics simulation response. It is found the arc model has closed relationship with time constant, reference voltage and other parameters. The parameter sweep technique for minimizing the arcing time of HTS arc model parameters shows the trend of arcing voltage and current from the change of arc model's parameters. A test bed environment is developed in MATLAB® Simulink by using the final parameter values to perform the interruption scenario of HTSCB. The results deal with different arcing terms like arc current peak, arcing time, fault duration, transient results of HTS arc model and the wave form transition tendency. Finally, the results are compared with the experimental analysis and found in good agreement.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131667755","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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