Pub Date : 2021-10-13DOI: 10.1109/IECON48115.2021.9589746
Hesamodin Abdoli, J. Moghani, S. Vaez‐Zadeh, Amir Babaki, Alireza Jafari-Natanzi, José Raúl Rodríguez Rodríguez
According to recent improvements in microgrid and Renewable Energy Sources (RESs), it is vital to use an alternative system for conventional transformers due to its lack of controllability and having high volume and weight. So, the senses gathered to the Solid-State Transformer (SST) because of its relevant advantages. A power electronic converter converts a low-frequency ac voltage waveform to a medium frequency voltage with variable amplitude in most SST structures. First, there is a need to convert the DC voltage to a pure sinusoidal one for using the High Voltage DC (HVDC) in Distributed Generator (DG) sources such as Photovoltaic (PV) farms and microgrids. Then an ac-ac converter is used to produce a medium frequency waveform. These structures need two stages of energy conversions. This paper proposes a new configuration with a specific modulation method to convert the DC voltage waveform directly to a medium frequency voltage waveform with variable maximum amplitude. The simplicity of the control system, reduced volume, and weight, as well as the reduced number of energy conversion stages are the advantages of the proposed system.
{"title":"Multilevel Inverter with a New Modulation Method Applied to Solid-State Transformer in PV Applications","authors":"Hesamodin Abdoli, J. Moghani, S. Vaez‐Zadeh, Amir Babaki, Alireza Jafari-Natanzi, José Raúl Rodríguez Rodríguez","doi":"10.1109/IECON48115.2021.9589746","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589746","url":null,"abstract":"According to recent improvements in microgrid and Renewable Energy Sources (RESs), it is vital to use an alternative system for conventional transformers due to its lack of controllability and having high volume and weight. So, the senses gathered to the Solid-State Transformer (SST) because of its relevant advantages. A power electronic converter converts a low-frequency ac voltage waveform to a medium frequency voltage with variable amplitude in most SST structures. First, there is a need to convert the DC voltage to a pure sinusoidal one for using the High Voltage DC (HVDC) in Distributed Generator (DG) sources such as Photovoltaic (PV) farms and microgrids. Then an ac-ac converter is used to produce a medium frequency waveform. These structures need two stages of energy conversions. This paper proposes a new configuration with a specific modulation method to convert the DC voltage waveform directly to a medium frequency voltage waveform with variable maximum amplitude. The simplicity of the control system, reduced volume, and weight, as well as the reduced number of energy conversion stages are the advantages of the proposed system.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114707279","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589881
H. A. Oliveira, L. Ribeiro, J. G. Matos, J. V. M. Caracas, G. C. Farias, O. Saavedra, L. A. Pinheiro
The microgrids have been applied satisfactorily for the supply of energy to isolated places. In isolated microgrids, energy storage systems and dispatchable energy sources are fundamental for continuous operation, and for power balance. The dispatchable sources are useful as backup, for maintenance operations, and for battery bank equalization charges. Practical experiences in isolated microgrids that uses synchronous generator (driven by a prime mover) have a potential operation problem when working with rectifiers to charge the battery bank whenever the available renewable resources are not sufficient. This is due the generator reactance that causes voltage distortions at the generator terminals, power quality problems for the microgrid and, eventually, inhibition of rectifier operation whenever there is a thyristor switching. This paper proposes the design of a bidirectional DC-AC converter control loops for application in isolated microgrids, improving the power quality, efficiency and operation. In addition, the use of a bidirectional converter reduces energy conversion losses and reduces the costs of implementing the microgrid by replacing two pieces of equipment (AC-DC and DC-AC converters) for just a single one. The contributions of the paper are the design methodology of the control loops of a bidirectional converter, whose development and application in real environment allows it to perform as grid-forming converter in isolated microgrids.
{"title":"A bidirectional converter control design to improve the performance of isolated microgrid","authors":"H. A. Oliveira, L. Ribeiro, J. G. Matos, J. V. M. Caracas, G. C. Farias, O. Saavedra, L. A. Pinheiro","doi":"10.1109/IECON48115.2021.9589881","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589881","url":null,"abstract":"The microgrids have been applied satisfactorily for the supply of energy to isolated places. In isolated microgrids, energy storage systems and dispatchable energy sources are fundamental for continuous operation, and for power balance. The dispatchable sources are useful as backup, for maintenance operations, and for battery bank equalization charges. Practical experiences in isolated microgrids that uses synchronous generator (driven by a prime mover) have a potential operation problem when working with rectifiers to charge the battery bank whenever the available renewable resources are not sufficient. This is due the generator reactance that causes voltage distortions at the generator terminals, power quality problems for the microgrid and, eventually, inhibition of rectifier operation whenever there is a thyristor switching. This paper proposes the design of a bidirectional DC-AC converter control loops for application in isolated microgrids, improving the power quality, efficiency and operation. In addition, the use of a bidirectional converter reduces energy conversion losses and reduces the costs of implementing the microgrid by replacing two pieces of equipment (AC-DC and DC-AC converters) for just a single one. The contributions of the paper are the design methodology of the control loops of a bidirectional converter, whose development and application in real environment allows it to perform as grid-forming converter in isolated microgrids.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124343152","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589965
Quentin Combe, S. Pierfederici, Mathieu Weber, S. Dufour
Current source rectifier (CSR) tends to be attractive in industrial applications where a voltage step down function is required. It is used in different industrial applications such as: uninterruptible power supply (UPS), front-end rectifier for data center power supply, on-board charger of electric vehicle, motor drive application, electrolyzer application etc. In this paper, an average model based on the current reference vectors is proposed: it allows to determine quickly the dynamics because it doesn't require the space vector modulation part, and is weakly dependent of the topology. This model allows to set up a control strategy using two loops. The internal loop with high bandwidth will be based on flatness properties which allows to naturally damps the grid current oscillations without active damping methods. The external loop based on an energy balance will be discussed. A stability analysis will be presented. Finally, simulation and experimental results will verify the effectiveness of the proposed solution.
{"title":"Modeling, Analysis and Control of Current Source Converter","authors":"Quentin Combe, S. Pierfederici, Mathieu Weber, S. Dufour","doi":"10.1109/IECON48115.2021.9589965","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589965","url":null,"abstract":"Current source rectifier (CSR) tends to be attractive in industrial applications where a voltage step down function is required. It is used in different industrial applications such as: uninterruptible power supply (UPS), front-end rectifier for data center power supply, on-board charger of electric vehicle, motor drive application, electrolyzer application etc. In this paper, an average model based on the current reference vectors is proposed: it allows to determine quickly the dynamics because it doesn't require the space vector modulation part, and is weakly dependent of the topology. This model allows to set up a control strategy using two loops. The internal loop with high bandwidth will be based on flatness properties which allows to naturally damps the grid current oscillations without active damping methods. The external loop based on an energy balance will be discussed. A stability analysis will be presented. Finally, simulation and experimental results will verify the effectiveness of the proposed solution.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124517677","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589321
Amir Farakhor, H. Fang
In this paper, a new modular, reconfigurable battery energy storage system is presented. The presented structure integrates power electronic converters with a switch-based reconfigurable array to build a smart battery energy storage system (SBESS). The proposed design can dynamically reconfigure the connection between the battery modules to connect a module in series/parallel or bypass a faulty module. The reconfigurability along with the use of the converters will bring a few important advantages, including better safety, robust power supply despite faults, variable voltage or power output, flexible individual control of battery modules, and balanced use of batteries. Further, the modular design allows to scale up to construct large-size SBESS. This work also elaborates the operation principles for the proposed SBESS design and illustrates its effectiveness through simulation study.
{"title":"A Novel Modular, Reconfigurable Battery Energy Storage System Design","authors":"Amir Farakhor, H. Fang","doi":"10.1109/IECON48115.2021.9589321","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589321","url":null,"abstract":"In this paper, a new modular, reconfigurable battery energy storage system is presented. The presented structure integrates power electronic converters with a switch-based reconfigurable array to build a smart battery energy storage system (SBESS). The proposed design can dynamically reconfigure the connection between the battery modules to connect a module in series/parallel or bypass a faulty module. The reconfigurability along with the use of the converters will bring a few important advantages, including better safety, robust power supply despite faults, variable voltage or power output, flexible individual control of battery modules, and balanced use of batteries. Further, the modular design allows to scale up to construct large-size SBESS. This work also elaborates the operation principles for the proposed SBESS design and illustrates its effectiveness through simulation study.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124075433","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589316
M. X. Bui, Le Khac Thuy, D. Xiao, M. F. Rahman
This paper proposes a sensorless and inductance estimation methods with model predictive control for the interior permanent magnet synchronous motor (IPMSM). The model predictive direct torque and flux control with constant PWM cycle is applied to the control system. The rotor speed and position are estimated based on the current slopes at one active and one zero volage vector during every PWM period where the duty cycle of the active voltage vector is controlled. In addition, the prediction of machine torque and flux is enhanced by the online identification of machine inductances. Extensive numerical simulation has been implemented to validate the robustness and the effectiveness of the proposed sensorless and inductance estimation methods.
{"title":"Sensorless and On-line Parameter Estimation with Model Predictive Control of IPMSMs","authors":"M. X. Bui, Le Khac Thuy, D. Xiao, M. F. Rahman","doi":"10.1109/IECON48115.2021.9589316","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589316","url":null,"abstract":"This paper proposes a sensorless and inductance estimation methods with model predictive control for the interior permanent magnet synchronous motor (IPMSM). The model predictive direct torque and flux control with constant PWM cycle is applied to the control system. The rotor speed and position are estimated based on the current slopes at one active and one zero volage vector during every PWM period where the duty cycle of the active voltage vector is controlled. In addition, the prediction of machine torque and flux is enhanced by the online identification of machine inductances. Extensive numerical simulation has been implemented to validate the robustness and the effectiveness of the proposed sensorless and inductance estimation methods.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127587034","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589890
John Ramoul, Gayan Watthewaduge, A. Callegaro, B. Nahid-Mobarakeh, A. Baronian, A. Emadi
This paper analyzes permanent magnet synchronous machines (PMSM) under open phase and phase-to-phase fault conditions within an electric vertical take-off and landing (eVTOL) aircraft. The development of a detailed mathematical model for a PMSM under the open phase fault (OPF) and phaseto-phase short circuit fault (P2PSCF) conditions are presented and implemented in MATLAB/Simulink along with its results within a ring bus electrical distribution system (REDS) for an eVTOL is presented. The behavior of both faults is investigated. Fault-tolerant control (FTC) is applied during the post-fault operation, and the copper losses and torque ripple are analyzed. Two fault mitigation techniques, 1) disabling the inverter (FTC1) and 2) creating a virtual neutral point (FTC2) with the inverter, are introduced for the P2PSCF. FTC1 had a peak-to-peak torque ripple of 309Nm with 1.55kW reduction of copper losses. FTC2 was found to respond faster than FTC1 and generated 157Nm peak-to-peak torque ripple. The OPF FTC was analyzed where only current references are changed for the same PI controller structure to enable a fail-operational state for the eVTOL. The OPF FTC achieved 348Nm peak to peak torque ripple compared to 371Nm to pre-fault conditions.
{"title":"Analysis of Open Phase and Phase-to-Phase Short Circuit Fault of PMSM for Electrical Propulsion in an eVTOL","authors":"John Ramoul, Gayan Watthewaduge, A. Callegaro, B. Nahid-Mobarakeh, A. Baronian, A. Emadi","doi":"10.1109/IECON48115.2021.9589890","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589890","url":null,"abstract":"This paper analyzes permanent magnet synchronous machines (PMSM) under open phase and phase-to-phase fault conditions within an electric vertical take-off and landing (eVTOL) aircraft. The development of a detailed mathematical model for a PMSM under the open phase fault (OPF) and phaseto-phase short circuit fault (P2PSCF) conditions are presented and implemented in MATLAB/Simulink along with its results within a ring bus electrical distribution system (REDS) for an eVTOL is presented. The behavior of both faults is investigated. Fault-tolerant control (FTC) is applied during the post-fault operation, and the copper losses and torque ripple are analyzed. Two fault mitigation techniques, 1) disabling the inverter (FTC1) and 2) creating a virtual neutral point (FTC2) with the inverter, are introduced for the P2PSCF. FTC1 had a peak-to-peak torque ripple of 309Nm with 1.55kW reduction of copper losses. FTC2 was found to respond faster than FTC1 and generated 157Nm peak-to-peak torque ripple. The OPF FTC was analyzed where only current references are changed for the same PI controller structure to enable a fail-operational state for the eVTOL. The OPF FTC achieved 348Nm peak to peak torque ripple compared to 371Nm to pre-fault conditions.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127706166","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589278
Harish Kumar Pakala, A. Belyaev, C. Diedrich
Platform Industry 4.0 conceptualizes Industry 4.0 as a smart factory that is composed of smart production processes, smart entities and smart products working in tandem to achieve larger goals, namely enabling flexible manufacturing, efficient resource utilization, optimal decision making, catering to individual preferences and creation of new services Smart entities are digital representations of physical or logical objects that can communicate with the external world and take independent decisions.These digital representations can choose different application-layer protocols (ALPs) such as MQTT or HTTP or CoAP for the exchange of messages with the external world. This requires addressing the concept of Application layer interoperability. In this paper, we review the past works by different authors that propose middleware architectures for enabling the exchange of messages in such a multi-protocol environment. Next, we argue for a better alternative and propose new architecture coined as Registry Infrastructure Component (RIC). RIC is a complex software component that maintains a registry, different ALP plugins. The digital representations have to register their ALP endpoint information with the RIC initially and later can post all the outbound messages to any of the RIC ALP plugins. The RIC takes the responsibility of transporting the message to the target recipient. Apart from registration with the RIC, the digital representations would have to communicate only in the I4.0 language.
{"title":"Middleware Architecture for Application Layer Interoperability of Standardized Digital Representations","authors":"Harish Kumar Pakala, A. Belyaev, C. Diedrich","doi":"10.1109/IECON48115.2021.9589278","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589278","url":null,"abstract":"Platform Industry 4.0 conceptualizes Industry 4.0 as a smart factory that is composed of smart production processes, smart entities and smart products working in tandem to achieve larger goals, namely enabling flexible manufacturing, efficient resource utilization, optimal decision making, catering to individual preferences and creation of new services Smart entities are digital representations of physical or logical objects that can communicate with the external world and take independent decisions.These digital representations can choose different application-layer protocols (ALPs) such as MQTT or HTTP or CoAP for the exchange of messages with the external world. This requires addressing the concept of Application layer interoperability. In this paper, we review the past works by different authors that propose middleware architectures for enabling the exchange of messages in such a multi-protocol environment. Next, we argue for a better alternative and propose new architecture coined as Registry Infrastructure Component (RIC). RIC is a complex software component that maintains a registry, different ALP plugins. The digital representations have to register their ALP endpoint information with the RIC initially and later can post all the outbound messages to any of the RIC ALP plugins. The RIC takes the responsibility of transporting the message to the target recipient. Apart from registration with the RIC, the digital representations would have to communicate only in the I4.0 language.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126308879","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589352
S. Ebrahimi, Navid Amiri, J. Jatskevich
Multi-phase machine-converter systems are being utilized in many advanced energy conversion systems, e.g., aircraft, marine and vehicular power systems, and renewable energy generation. Accurate and efficient models are essential for simulation, analysis and design of such systems. Recently, a parametric-average-value modeling (PAVM) technique has been presented for 12-pulse rectifiers connected to six-phase machines including several dominant harmonics (i.e. 5th, 7th, etc.). Although the presented PAVM allows fast simulations, it assumes symmetrical operation of the rectifier, which limits its application only to normal operation. In this paper, the PAVM methodology is extended to consider asymmetrical operation of the 12-pulse rectifiers that may occur due to internal faults of some of the switches. This is achieved by formulating the characteristic as well as non-characteristic (i.e. 2nd, 3rd, etc.) harmonics in both positive and negatives sequences in addition to the dc components appearing in ac voltages and currents. Using a case-study system consisting of a six-phase generator connected to a 12-pulse ac–dc rectifier, it is demonstrated that the proposed extended PAVM can accurately reconstruct the waveforms of the detailed switching model of 12-pulse rectifier in faulty conditions while allowing much faster simulations.
{"title":"Average-Value Modeling of Multi-Phase Machine-Converter Systems with Asymmetric Internal Faults","authors":"S. Ebrahimi, Navid Amiri, J. Jatskevich","doi":"10.1109/IECON48115.2021.9589352","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589352","url":null,"abstract":"Multi-phase machine-converter systems are being utilized in many advanced energy conversion systems, e.g., aircraft, marine and vehicular power systems, and renewable energy generation. Accurate and efficient models are essential for simulation, analysis and design of such systems. Recently, a parametric-average-value modeling (PAVM) technique has been presented for 12-pulse rectifiers connected to six-phase machines including several dominant harmonics (i.e. 5th, 7th, etc.). Although the presented PAVM allows fast simulations, it assumes symmetrical operation of the rectifier, which limits its application only to normal operation. In this paper, the PAVM methodology is extended to consider asymmetrical operation of the 12-pulse rectifiers that may occur due to internal faults of some of the switches. This is achieved by formulating the characteristic as well as non-characteristic (i.e. 2nd, 3rd, etc.) harmonics in both positive and negatives sequences in addition to the dc components appearing in ac voltages and currents. Using a case-study system consisting of a six-phase generator connected to a 12-pulse ac–dc rectifier, it is demonstrated that the proposed extended PAVM can accurately reconstruct the waveforms of the detailed switching model of 12-pulse rectifier in faulty conditions while allowing much faster simulations.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126397608","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589954
Raoul Laribi, D. Schaab, Yijun Lu, A. Sauer
Industrial drive systems are characterized by dynamic peak loads and regenerative braking. These short-term loads lead to oversized supply infrastructure and low conversion efficiencies for prevalent partial loads. Energy storage systems (ESS) can be integrated into the DC link between rectifier and multiple inverters to increase energy efficiency and cover peak loads. To design a controller for the ESS, the underlying controller and process have to be modelled using physical laws and measured data. However, for each application this would mean having to extensively tune and adapt the controller to a specific manufacturing machine to ensure a stable, safe and energy-efficient operation. A self-tuning controller could solve this problem by automatically identifying the process and controller model of the closed-loop system. This paper aims to implement non-invasive closed-loop system identification for retrofitting an energy storage system to a machine tool. The validation of the approach shows that the actual DC link capacity and the controller parameters of the active rectifier can be identified reliably, e.g. with deviations of only 1.5 %.
{"title":"Non-Invasive Closed-Loop System Identification of an Active Rectifier","authors":"Raoul Laribi, D. Schaab, Yijun Lu, A. Sauer","doi":"10.1109/IECON48115.2021.9589954","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589954","url":null,"abstract":"Industrial drive systems are characterized by dynamic peak loads and regenerative braking. These short-term loads lead to oversized supply infrastructure and low conversion efficiencies for prevalent partial loads. Energy storage systems (ESS) can be integrated into the DC link between rectifier and multiple inverters to increase energy efficiency and cover peak loads. To design a controller for the ESS, the underlying controller and process have to be modelled using physical laws and measured data. However, for each application this would mean having to extensively tune and adapt the controller to a specific manufacturing machine to ensure a stable, safe and energy-efficient operation. A self-tuning controller could solve this problem by automatically identifying the process and controller model of the closed-loop system. This paper aims to implement non-invasive closed-loop system identification for retrofitting an energy storage system to a machine tool. The validation of the approach shows that the actual DC link capacity and the controller parameters of the active rectifier can be identified reliably, e.g. with deviations of only 1.5 %.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126402509","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 : 2021-10-13DOI: 10.1109/IECON48115.2021.9589526
Kam Hon Lau, U. Qureshi, B. Silva, G. Hancke
Mobile phones are becoming a common tool for people to make the payments. The current peer-to-peer mobile based payment system allows two parties to use physical location-limited interaction between their devices to facilitate secure payment. This physical location-limited interaction is ensured by enabling wireless proximity through Near Field Communication (NFC) technology embedded in mobile phones. However, the NFC technology is vulnerable to relay attacks which is a very challenging security problem. This paper proposes a novel new proximity channel based on vibration for peer-to-peer mobile payment system. The built-in vibrator and accelerometer on the phone are used to send and receive the information. The communication ensures the payment is conducted at a close distance. This paper also compares and analyse the method with the other method such as the phone vibration data and encrypt One Time Password (OTP) as the vibration pattern for payment. The result shows that the proposed method is able retrieve the information successfully from the other smartphones and guarantees the transaction is safe from relay attacks and eavesdropping.
{"title":"Mobile Proximity Channel Using Vibration","authors":"Kam Hon Lau, U. Qureshi, B. Silva, G. Hancke","doi":"10.1109/IECON48115.2021.9589526","DOIUrl":"https://doi.org/10.1109/IECON48115.2021.9589526","url":null,"abstract":"Mobile phones are becoming a common tool for people to make the payments. The current peer-to-peer mobile based payment system allows two parties to use physical location-limited interaction between their devices to facilitate secure payment. This physical location-limited interaction is ensured by enabling wireless proximity through Near Field Communication (NFC) technology embedded in mobile phones. However, the NFC technology is vulnerable to relay attacks which is a very challenging security problem. This paper proposes a novel new proximity channel based on vibration for peer-to-peer mobile payment system. The built-in vibrator and accelerometer on the phone are used to send and receive the information. The communication ensures the payment is conducted at a close distance. This paper also compares and analyse the method with the other method such as the phone vibration data and encrypt One Time Password (OTP) as the vibration pattern for payment. The result shows that the proposed method is able retrieve the information successfully from the other smartphones and guarantees the transaction is safe from relay attacks and eavesdropping.","PeriodicalId":443337,"journal":{"name":"IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128124402","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：