Pub Date : 2019-12-01DOI: 10.1109/PSC49016.2019.9081445
H. Abdoli, Farid Salari
Residual stresses in solid oxide cell (SOC) stacks or components are potential fracture sources which needs to be investigated in order to enhance the reliability of the stacks. One of the most important joint materials in solid oxide cell stacks are glass sealants/steel interconnects at which chemical and mechanical characteristics are changed during service. Chemical reactions occur at the interface and change its chemistry. Mechanical stresses are formed with changing materials chemistry. Moreover, thermos-mechanical behavior mismatches lead to residual mechanical stress upon cooling/heating. An analytical model based on the classical beam bending theory was used in this study for calculating the residual stresses in this joint hybrid structure when the device is cooled down to room-temperature. Two potential commercial steel materials (SS430 and Crofer 22APU) were considered as the glass sealant counterpart.
{"title":"Bonding of sealant/interconnect joints in solid oxide cell stacks","authors":"H. Abdoli, Farid Salari","doi":"10.1109/PSC49016.2019.9081445","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081445","url":null,"abstract":"Residual stresses in solid oxide cell (SOC) stacks or components are potential fracture sources which needs to be investigated in order to enhance the reliability of the stacks. One of the most important joint materials in solid oxide cell stacks are glass sealants/steel interconnects at which chemical and mechanical characteristics are changed during service. Chemical reactions occur at the interface and change its chemistry. Mechanical stresses are formed with changing materials chemistry. Moreover, thermos-mechanical behavior mismatches lead to residual mechanical stress upon cooling/heating. An analytical model based on the classical beam bending theory was used in this study for calculating the residual stresses in this joint hybrid structure when the device is cooled down to room-temperature. Two potential commercial steel materials (SS430 and Crofer 22APU) were considered as the glass sealant counterpart.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122175535","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081510
A. Rahimi, K. Kanzi
In this paper, A detailed high-frequency lumped parameter circuit model of Permanent Magnet Synchronous Motor (PMSM) is proposed for using in conducted Electromagnetic Interference (EMI) studies at the frequency range of 100 Hz to 10 MHz. Parameters of the proposed model are determined using the measured Common-Mode (CM) and Differential-Mode (DM) impedance characteristics of the PMSM and physics-based 3-D Finite Element Analysis (FEA) eddy-currents simulation of the iron-core. Winding resistances, parasitic capacitances, leakage inductances and inter-turn effects of the stator winding are determined from the measurement data. However, the measurement data is not enough to determine the unknown parameters which represent the high-frequency behavior of the iron-core. Using 3-D FEA gives the ability to model the complex mid-frequency behavior of the motor by including the core-loss and eddy-currents effects of the iron-core. Results show a good agreement for both CM and DM impedance characteristics modeled by the proposed method and the measurement data for the desired frequency of conducted EMI studies.
{"title":"Improved High-Frequency Modeling of PMSM Using 3-D Finite Element Analysis","authors":"A. Rahimi, K. Kanzi","doi":"10.1109/PSC49016.2019.9081510","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081510","url":null,"abstract":"In this paper, A detailed high-frequency lumped parameter circuit model of Permanent Magnet Synchronous Motor (PMSM) is proposed for using in conducted Electromagnetic Interference (EMI) studies at the frequency range of 100 Hz to 10 MHz. Parameters of the proposed model are determined using the measured Common-Mode (CM) and Differential-Mode (DM) impedance characteristics of the PMSM and physics-based 3-D Finite Element Analysis (FEA) eddy-currents simulation of the iron-core. Winding resistances, parasitic capacitances, leakage inductances and inter-turn effects of the stator winding are determined from the measurement data. However, the measurement data is not enough to determine the unknown parameters which represent the high-frequency behavior of the iron-core. Using 3-D FEA gives the ability to model the complex mid-frequency behavior of the motor by including the core-loss and eddy-currents effects of the iron-core. Results show a good agreement for both CM and DM impedance characteristics modeled by the proposed method and the measurement data for the desired frequency of conducted EMI studies.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131353271","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081472
M. Maadani, Maryam Shabro, Zahra Alavikia
The digital transformation of electrical utilities has gained an ongoing attention in recent years; It means a tremendous change using disruptive technologies (including Internet of Things (IoT), Data Analytics, Artificial Intelligence, etc.) which leads to new data-driven business opportunities. On the other hand, various projects have been conducted in this field by the Joint Research Center (JRC) in the European Union (EU), mostly focused on the demand-side, and several commercial product and services have been developed. Iran is also moving through the way of transforming its grid digitally, which would lead to the appearance of several business opportunities. In this paper, after detailed review and classification of the commercial products developed or used in EU projects, the business opportunities of Iran electricity grid digital transformation, with emphasis on demand-side management, has been discussed.
{"title":"Analysis of Demand-side Business Opportunities in Iran, as a Digital Transformation Perspective","authors":"M. Maadani, Maryam Shabro, Zahra Alavikia","doi":"10.1109/PSC49016.2019.9081472","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081472","url":null,"abstract":"The digital transformation of electrical utilities has gained an ongoing attention in recent years; It means a tremendous change using disruptive technologies (including Internet of Things (IoT), Data Analytics, Artificial Intelligence, etc.) which leads to new data-driven business opportunities. On the other hand, various projects have been conducted in this field by the Joint Research Center (JRC) in the European Union (EU), mostly focused on the demand-side, and several commercial product and services have been developed. Iran is also moving through the way of transforming its grid digitally, which would lead to the appearance of several business opportunities. In this paper, after detailed review and classification of the commercial products developed or used in EU projects, the business opportunities of Iran electricity grid digital transformation, with emphasis on demand-side management, has been discussed.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125474987","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081536
Saeid Deliri Khatoonabad, K. Varesi
In this paper, a developed single-phase basic 17-level inverter topology has been proposed that is based on Switched-Capacitor Cell (SCC). The proposed basic topology consists of a main unit and two SCCs. The proposed basic unit can be extended by increasing the number of SCCs on both sides of main unit that leads to entirely symmetric extended topology. Reduced device (DC source, switch, capacitor and, diode) count is the main advantage of proposed topology that results in less size, weight and cost. Application of two half-bridges instead of one full-bridge leads to less total standing voltage on the switches. Self-voltage balancing of capacitors, lesser cost function as well as high step-up capability is another main merits of proposed topology. Note that the self-voltage balancing property of capacitors discards the need for an extra complicated voltage regulation controller circuitry. Also, the proposed topology can successfully supply low power factor (R-L) loads. Simulations have been done in PSCAD/EMTDC software to verify the performance of proposed topology. The comparison and simulation results prove the superiority of proposed topology.
{"title":"An Extended High Step-Up Switched-Capacitor Based Multi-Level Inverter Topology","authors":"Saeid Deliri Khatoonabad, K. Varesi","doi":"10.1109/PSC49016.2019.9081536","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081536","url":null,"abstract":"In this paper, a developed single-phase basic 17-level inverter topology has been proposed that is based on Switched-Capacitor Cell (SCC). The proposed basic topology consists of a main unit and two SCCs. The proposed basic unit can be extended by increasing the number of SCCs on both sides of main unit that leads to entirely symmetric extended topology. Reduced device (DC source, switch, capacitor and, diode) count is the main advantage of proposed topology that results in less size, weight and cost. Application of two half-bridges instead of one full-bridge leads to less total standing voltage on the switches. Self-voltage balancing of capacitors, lesser cost function as well as high step-up capability is another main merits of proposed topology. Note that the self-voltage balancing property of capacitors discards the need for an extra complicated voltage regulation controller circuitry. Also, the proposed topology can successfully supply low power factor (R-L) loads. Simulations have been done in PSCAD/EMTDC software to verify the performance of proposed topology. The comparison and simulation results prove the superiority of proposed topology.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133728482","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081540
A. Nobahari, A. Vahedi, F. Mahmouditabar
Synchronous reluctance machines have gained interest due to their PM-free and robust structure and also the capability for high efficiency compared with the induction motors. In this paper, an efficient optimization procedure is studied to improve their torque profile characteristics including torque capability and torque ripple. For this purpose, the optimization is focused on the rotor flux barriers end sizing. A surrogate model is first developed based on the response surface methodology, and then an intelligent multi-objective optimization algorithm is used to find the optimal design. Finite elements model is employed to create the required dataset based on the Design of Experiments methods, as well as to verify the final results.
{"title":"Torque Profile Improvement of a Synchronous Reluctance Motor through Optimizing the Rotor Flux Barriers Ends","authors":"A. Nobahari, A. Vahedi, F. Mahmouditabar","doi":"10.1109/PSC49016.2019.9081540","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081540","url":null,"abstract":"Synchronous reluctance machines have gained interest due to their PM-free and robust structure and also the capability for high efficiency compared with the induction motors. In this paper, an efficient optimization procedure is studied to improve their torque profile characteristics including torque capability and torque ripple. For this purpose, the optimization is focused on the rotor flux barriers end sizing. A surrogate model is first developed based on the response surface methodology, and then an intelligent multi-objective optimization algorithm is used to find the optimal design. Finite elements model is employed to create the required dataset based on the Design of Experiments methods, as well as to verify the final results.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132593478","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081566
Davood Kheibargir, R. Zeinali, Seyed Mohsen Aliabadi
This paper presents the study to use the effect of the resistive superconducting fault current limiter (RSFCL) on a wind power plant rated at 50 MW, which can provide an augmentation for the fault ride-through (FRT) capability. The wind power plant consists of the number of wind turbines that each one based on a permanent magnet synchronous generator (PMSG) and a back-to-back full rating converter. The RSFCL by limiting the fault current can decrease the reduction of voltage at the point of common coupling (PCC). It can be improved by adding a new control strategy of the reactive current controller based on the grid code requirements to the grid-side voltage source converter (VSC). Moreover, because of increasing voltage, the active power output of the wind power plant increases, therefore, it can diminish the dc-link voltage in faulty conditions. In this paper, both the thermal and electrical properties of high-temperature superconductor (HTS) are considered. In addition, its modeling coming from the electrical field is done with “Power Law.”
{"title":"Augmentation of fault ride-through capability of PMSG in a wind power plant using resistive SFCL and a new reactive current injection controller","authors":"Davood Kheibargir, R. Zeinali, Seyed Mohsen Aliabadi","doi":"10.1109/PSC49016.2019.9081566","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081566","url":null,"abstract":"This paper presents the study to use the effect of the resistive superconducting fault current limiter (RSFCL) on a wind power plant rated at 50 MW, which can provide an augmentation for the fault ride-through (FRT) capability. The wind power plant consists of the number of wind turbines that each one based on a permanent magnet synchronous generator (PMSG) and a back-to-back full rating converter. The RSFCL by limiting the fault current can decrease the reduction of voltage at the point of common coupling (PCC). It can be improved by adding a new control strategy of the reactive current controller based on the grid code requirements to the grid-side voltage source converter (VSC). Moreover, because of increasing voltage, the active power output of the wind power plant increases, therefore, it can diminish the dc-link voltage in faulty conditions. In this paper, both the thermal and electrical properties of high-temperature superconductor (HTS) are considered. In addition, its modeling coming from the electrical field is done with “Power Law.”","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130104997","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081549
N. Arish, V. Teymoori, H. Yaghobi, M. Moradi
This paper introduces a new structure of linear permanent magnet Vernier machine, capable of producing high power even at low speeds of waves, which is highly suitable for wave energy converters. For this reason, Vernier machines are used in wave energy converters. In this paper, by adding the skew magnet on the stator in two different magnetic directions and permanent magnet with Halbach array on the translator, we have been able to improve the performance of the proposed machine compared to the prototype structure. This innovation has led to the increase of the main machine parameters including: induced voltage, power factor, trust force, PM flux, compared to the existing machine. All of these investigations were conducted under the same conditions using Finite element method.
{"title":"Design of New Linear Vernier Machine with Skew and Halbach Permanent Magnet for Wave Energy Converters","authors":"N. Arish, V. Teymoori, H. Yaghobi, M. Moradi","doi":"10.1109/PSC49016.2019.9081549","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081549","url":null,"abstract":"This paper introduces a new structure of linear permanent magnet Vernier machine, capable of producing high power even at low speeds of waves, which is highly suitable for wave energy converters. For this reason, Vernier machines are used in wave energy converters. In this paper, by adding the skew magnet on the stator in two different magnetic directions and permanent magnet with Halbach array on the translator, we have been able to improve the performance of the proposed machine compared to the prototype structure. This innovation has led to the increase of the main machine parameters including: induced voltage, power factor, trust force, PM flux, compared to the existing machine. All of these investigations were conducted under the same conditions using Finite element method.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114888676","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081478
Ali Akbar Nasiri, M. Mirsalim, A. Nasiri
Simple and robust structure, self-starting and smooth operation with low noise and vibration are the most attractive advantages of the Hysteresis Motor (HM) which makes it suitable for high speed constant torque applications. High magnetizing current and low efficiency and power factor are the major drawbacks of the conventional HMs. On the other hand, the PM motors are widely used because of high efficiency, high power factor and relatively high stability at synchronous speed. However, PM motors suffer from having no starting torque and generating considerable oscillating torque. This paper presents a novel Multi-Stack PM-Hysteresis Motor in order to improve the performance characteristics of the conventional HM. In the optimal design procedure, the electrical equivalent circuits (EECs) are used for evaluating the operating parameters. A multi-objective optimization using Imperialist Competitive Algorithm as the solver is established for improving the efficiency and power factor of the machine as well as reducing the rotational inertia, overall volume and speed oscillations, simultaneously. The feasibility of the designed machine is guaranteed by considering the electrical, mechanical, magnetic and the thermal constraints. Finally, the appropriate performance of the optimized structure is validated using 2D time-stepping finite element analysis.
{"title":"A Novel Hybrid Hysteresis Motor with Multi-Stack PM-Hysteresis Rotor; General Modeling, Analysis and Design Optimization","authors":"Ali Akbar Nasiri, M. Mirsalim, A. Nasiri","doi":"10.1109/PSC49016.2019.9081478","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081478","url":null,"abstract":"Simple and robust structure, self-starting and smooth operation with low noise and vibration are the most attractive advantages of the Hysteresis Motor (HM) which makes it suitable for high speed constant torque applications. High magnetizing current and low efficiency and power factor are the major drawbacks of the conventional HMs. On the other hand, the PM motors are widely used because of high efficiency, high power factor and relatively high stability at synchronous speed. However, PM motors suffer from having no starting torque and generating considerable oscillating torque. This paper presents a novel Multi-Stack PM-Hysteresis Motor in order to improve the performance characteristics of the conventional HM. In the optimal design procedure, the electrical equivalent circuits (EECs) are used for evaluating the operating parameters. A multi-objective optimization using Imperialist Competitive Algorithm as the solver is established for improving the efficiency and power factor of the machine as well as reducing the rotational inertia, overall volume and speed oscillations, simultaneously. The feasibility of the designed machine is guaranteed by considering the electrical, mechanical, magnetic and the thermal constraints. Finally, the appropriate performance of the optimized structure is validated using 2D time-stepping finite element analysis.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133110595","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081567
Soroush Oshnoei, M. Aghamohammadi, Siavash Oshnoei
This paper proposes a novel fuzzy-based Hybrid controller in an isolated ac microgrid (MG). MGs mainly utilize the renewable energy sources (RES) like diesel engine generators, solar photovoltaic, wind turbine generator, fuel cell and energy storage systems such as battery and flywheel to provide local loads. Since RESs have a variable and uncertain nature, the imbalance between generation and demand occurs in MGs. In this condition, the severe fluctuations happen at system frequency, which eventually could lead to system collapse. In order to handle this condition, a novel fuzzy-based Hybrid controller is utilized to enhance the frequency performance. Moreover, the performance of the proposed Hybrid controller is compared with the integer order controllers and fractional order controllers. The results exhibit that the proposed Hybrid controller is more capable in stabilizing the MG frequency than other controllers. Finally, the sensitivity analysis is done to evaluate the robustness of the proposed controller against the changes of MG parameters.
{"title":"A Novel Fractional order controller based on Fuzzy Logic for Regulating the Frequency of an Islanded Microgrid","authors":"Soroush Oshnoei, M. Aghamohammadi, Siavash Oshnoei","doi":"10.1109/PSC49016.2019.9081567","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081567","url":null,"abstract":"This paper proposes a novel fuzzy-based Hybrid controller in an isolated ac microgrid (MG). MGs mainly utilize the renewable energy sources (RES) like diesel engine generators, solar photovoltaic, wind turbine generator, fuel cell and energy storage systems such as battery and flywheel to provide local loads. Since RESs have a variable and uncertain nature, the imbalance between generation and demand occurs in MGs. In this condition, the severe fluctuations happen at system frequency, which eventually could lead to system collapse. In order to handle this condition, a novel fuzzy-based Hybrid controller is utilized to enhance the frequency performance. Moreover, the performance of the proposed Hybrid controller is compared with the integer order controllers and fractional order controllers. The results exhibit that the proposed Hybrid controller is more capable in stabilizing the MG frequency than other controllers. Finally, the sensitivity analysis is done to evaluate the robustness of the proposed controller against the changes of MG parameters.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125767839","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 : 2019-12-01DOI: 10.1109/PSC49016.2019.9081479
A. Kadivar
In this article, the previously known Thomson coil has been used as an actuator for open-close of a prototype power switch instead of a conventional spring mechanism that can be used in future vacuum circuit breakers, HVDC breakers and hybrid fault current limiters. Feasibility of increasing the opening speed to 80 m/s and its momentum control is discussed through finite element method simulations. Dynamics of Thomson drive is simulated, and speed dependencies to the frequency and stored energy are extracted in few diagrams to facilitate actuator tune-up to reach this considerable speed for a rather heavy disk. The contact speed in an experimental prototype switch is increased up to 22.5 m/s, and the dependencies of the arc voltage generated in ultra-fast air switches to the opening speed are investigated. Measured arc voltages and high-speed recordings of arc cores are presented. It is shown that by increasing the contact speed, the arc voltage rises rapidly. Thus, the number of required series arcs and the total resistance is reduced, so lower commutation time for higher fault currents are possible in hybrid FCLs or HVDC breakers.
{"title":"Electromagnetic Actuators for Ultra-fast Air Switches to Increase Arc Voltage by Increasing Contact Speed","authors":"A. Kadivar","doi":"10.1109/PSC49016.2019.9081479","DOIUrl":"https://doi.org/10.1109/PSC49016.2019.9081479","url":null,"abstract":"In this article, the previously known Thomson coil has been used as an actuator for open-close of a prototype power switch instead of a conventional spring mechanism that can be used in future vacuum circuit breakers, HVDC breakers and hybrid fault current limiters. Feasibility of increasing the opening speed to 80 m/s and its momentum control is discussed through finite element method simulations. Dynamics of Thomson drive is simulated, and speed dependencies to the frequency and stored energy are extracted in few diagrams to facilitate actuator tune-up to reach this considerable speed for a rather heavy disk. The contact speed in an experimental prototype switch is increased up to 22.5 m/s, and the dependencies of the arc voltage generated in ultra-fast air switches to the opening speed are investigated. Measured arc voltages and high-speed recordings of arc cores are presented. It is shown that by increasing the contact speed, the arc voltage rises rapidly. Thus, the number of required series arcs and the total resistance is reduced, so lower commutation time for higher fault currents are possible in hybrid FCLs or HVDC breakers.","PeriodicalId":359817,"journal":{"name":"2019 International Power System Conference (PSC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124812773","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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