Pub Date : 2017-12-15DOI: 10.1109/IECON.2017.8216520
Alexandre de Langlade, S. Katsura
This paper presents a method to improve the robustness of the position control of a small permanent magnet within a living organism, such as the human body in micro-surgery. So far, position control has been achieved up to 5 Degrees of Freedom with robustness against model uncertainties. In order to achieve robust control against non predicted disturbances, this paper uses a disturbance observer (DOB) which adapts to the non-linearity of the system. Disturbance observers require fast and accurate position sensing in order to estimate and compensate the disturbance accurately. The proposed method depends even more on the quality of the position sensing. To ensure good performances, robust stability conditions are derived regarding position feedback, and the proposed DOB is validated by simulations and experiments.
{"title":"Position control of a magnetic levitation device using a non-linear disturbance observer and influence of the position sensing","authors":"Alexandre de Langlade, S. Katsura","doi":"10.1109/IECON.2017.8216520","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216520","url":null,"abstract":"This paper presents a method to improve the robustness of the position control of a small permanent magnet within a living organism, such as the human body in micro-surgery. So far, position control has been achieved up to 5 Degrees of Freedom with robustness against model uncertainties. In order to achieve robust control against non predicted disturbances, this paper uses a disturbance observer (DOB) which adapts to the non-linearity of the system. Disturbance observers require fast and accurate position sensing in order to estimate and compensate the disturbance accurately. The proposed method depends even more on the quality of the position sensing. To ensure good performances, robust stability conditions are derived regarding position feedback, and the proposed DOB is validated by simulations and experiments.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"123 14 1","pages":"3081-3086"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84042448","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 : 2017-12-15DOI: 10.1109/IECON.2017.8216846
Margarita Norambuena, C. Garcia, José R. Rodríguez, P. Lezana
Finite Control Set Model Predictive Control (FCS-MPC) allows to deal with non-linearities of the system and obtain a fast dynamic response. Therefore FCS-MPC is a good alternative to govern complex power converters or when fast transient operation is required. A problem about the implementation of FCS-MPC is the computational cost, which is bigger for multilevel converters. This paper proposed a new method to implement FCS-MPC reducing the necessary iterations in a 3-phase 4-level Flying Capacitor converter. Simulation results show that the proposed FCS-MPC strategy produces an effective control of the load current, while keeping balanced capacitor voltages with lower necessary iterations.
{"title":"Finite Control Set Model Predictive Control reduced computational cost applied to a Flying Capacitor converter","authors":"Margarita Norambuena, C. Garcia, José R. Rodríguez, P. Lezana","doi":"10.1109/IECON.2017.8216846","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216846","url":null,"abstract":"Finite Control Set Model Predictive Control (FCS-MPC) allows to deal with non-linearities of the system and obtain a fast dynamic response. Therefore FCS-MPC is a good alternative to govern complex power converters or when fast transient operation is required. A problem about the implementation of FCS-MPC is the computational cost, which is bigger for multilevel converters. This paper proposed a new method to implement FCS-MPC reducing the necessary iterations in a 3-phase 4-level Flying Capacitor converter. Simulation results show that the proposed FCS-MPC strategy produces an effective control of the load current, while keeping balanced capacitor voltages with lower necessary iterations.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"2010 1","pages":"4903-4907"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82560903","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 : 2017-12-15DOI: 10.1109/IECON.2017.8217452
S. Shimizu, N. Hasebe
The authors have developed the wide angle fovea (WAF) telescope. This development was originally motivated from our mind to assist the ranger to save the people floating on the sea. Cruel Tsunami disasters often cause such miserable situations. An objective lens part of this special telescope was formerly developed using the Advanced WAF (AdWAF) model, by which we can design a distribution of the lens curve very flexibly. This special-made objective lens has an enough wide field of view, and thus it can keep a moving target as being always inside field of view. In addition, it can observe the target more in detail because its central field of view has higher magnification than the conventional telescope. Yes, this telescope is inspired from a smart function of the human eye to improve its availability. This special-made objective lens achieves not only wide-angle surveillance and but also detailed observation on the same time. Moreover, a special-made eyepiece lens part is also designed for users to observe environments with a more immersive feeling. This eyepiece utilizes a broader area on the human retina for the WAF telescope image projection. Indeed, the developed telescope has 22 aspherical surfaces of all 28 surfaces by using economy plastic lenses.
{"title":"Development of wide angle fovea telescope with wide-field-of-view immersive eyepiece","authors":"S. Shimizu, N. Hasebe","doi":"10.1109/IECON.2017.8217452","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217452","url":null,"abstract":"The authors have developed the wide angle fovea (WAF) telescope. This development was originally motivated from our mind to assist the ranger to save the people floating on the sea. Cruel Tsunami disasters often cause such miserable situations. An objective lens part of this special telescope was formerly developed using the Advanced WAF (AdWAF) model, by which we can design a distribution of the lens curve very flexibly. This special-made objective lens has an enough wide field of view, and thus it can keep a moving target as being always inside field of view. In addition, it can observe the target more in detail because its central field of view has higher magnification than the conventional telescope. Yes, this telescope is inspired from a smart function of the human eye to improve its availability. This special-made objective lens achieves not only wide-angle surveillance and but also detailed observation on the same time. Moreover, a special-made eyepiece lens part is also designed for users to observe environments with a more immersive feeling. This eyepiece utilizes a broader area on the human retina for the WAF telescope image projection. Indeed, the developed telescope has 22 aspherical surfaces of all 28 surfaces by using economy plastic lenses.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"17 1","pages":"8273-8278"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89020175","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 : 2017-12-15DOI: 10.1109/IECON.2017.8217284
M. Rivera, L. Tarisciotti, P. Wheeler, S. Bayhan
This paper describes the application of a simplified indirect model predictive current control strategy for a direct Matrix Converter. The direct matrix converter has a large number of available switching states which implies that the implementation of predictive control high computational cost. In this paper, a predictive current control strategy is proposed in order to simplify the computational cost while avoiding the use of weighting factors. The method is based on the fictitious dc-link concept, which has been used in the past for the classical modulation and control techniques of the direct matrix converter. The proposed controller is enhanced with a fixed switching predictive strategy in order to improve the performance of the full system. Simulated results confirm the feasibility of the proposed controller demonstrating that it is an alternative to classical predictive control strategies for the direct matrix converter.
{"title":"Indirect predictive control strategy with fixed switching frequency for a direct matrix converter","authors":"M. Rivera, L. Tarisciotti, P. Wheeler, S. Bayhan","doi":"10.1109/IECON.2017.8217284","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217284","url":null,"abstract":"This paper describes the application of a simplified indirect model predictive current control strategy for a direct Matrix Converter. The direct matrix converter has a large number of available switching states which implies that the implementation of predictive control high computational cost. In this paper, a predictive current control strategy is proposed in order to simplify the computational cost while avoiding the use of weighting factors. The method is based on the fictitious dc-link concept, which has been used in the past for the classical modulation and control techniques of the direct matrix converter. The proposed controller is enhanced with a fixed switching predictive strategy in order to improve the performance of the full system. Simulated results confirm the feasibility of the proposed controller demonstrating that it is an alternative to classical predictive control strategies for the direct matrix converter.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"74 1","pages":"7332-7337"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88229261","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 : 2017-12-15DOI: 10.1109/IECON.2017.8216503
Ryosuke Asaga, Shuntaro Yamato, Y. Kakinuma
The buffing process used in the repair polishing of an automotive body surface is carried out manually using skilled workers based on their own experience. However, the number of skilled workers available in the workforce is decreasing owing to the aging population. In addition, the surface quality after the buffing process has been applied is dependent on the proficiency level of the polishing worker. Therefore, an automation technology for the buffing process is required. In our previous research, we developed a polishing machine with a 5-axis serial-parallel mechanism, and extracted data on the tool trajectory, tool posture, and polishing force from a skilled worker. In addition, a method for simultaneously controlling the tool posture and polishing force on a curved surface was developed. The polishing machine successfully replicates a skilled buffing process on not only flat surfaces but also curved surfaces without applying a teaching-playback method, CAD data, or external sensors. This paper analyzes the proposed control method from the perspective of posture control, and verifies the utility experimentally on a semispherical surface.
{"title":"Analysis of tool posture control method on curved surface using polishing machine with 5-axis serial-parallel mechanism","authors":"Ryosuke Asaga, Shuntaro Yamato, Y. Kakinuma","doi":"10.1109/IECON.2017.8216503","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216503","url":null,"abstract":"The buffing process used in the repair polishing of an automotive body surface is carried out manually using skilled workers based on their own experience. However, the number of skilled workers available in the workforce is decreasing owing to the aging population. In addition, the surface quality after the buffing process has been applied is dependent on the proficiency level of the polishing worker. Therefore, an automation technology for the buffing process is required. In our previous research, we developed a polishing machine with a 5-axis serial-parallel mechanism, and extracted data on the tool trajectory, tool posture, and polishing force from a skilled worker. In addition, a method for simultaneously controlling the tool posture and polishing force on a curved surface was developed. The polishing machine successfully replicates a skilled buffing process on not only flat surfaces but also curved surfaces without applying a teaching-playback method, CAD data, or external sensors. This paper analyzes the proposed control method from the perspective of posture control, and verifies the utility experimentally on a semispherical surface.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"56 1","pages":"2979-2984"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90860301","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 : 2017-12-15DOI: 10.1109/IECON.2017.8217424
Jan Haase, Fares Al Juheshi, H. Nishi, J. Ploennigs, K. Tsang, N. Aljuhaishi, M. Alahmad
Recent trends in the applications of batteries in the built environment are improving the efficiency of batteries and lowering costs. This paper introduces various types of battery technologies such as sodium sulfur, lithium ion, flow and lead acid batteries and discusses their models. Various applications of batteries such as adaptive battery systems, Battery Electrical Vehicles (BEVs), Battery Energy Storage Systems (BESS), the Internet of Things (IoT), and Smart Grid and Smart Environment applications are also discussed. In their selection and use of batteries, scholars are ultimately looking to maximize occupant comfort whilst keeping costs low and optimizing the energy efficiency of buildings. This paper will provide a review of current trends in this field.
{"title":"Analysis of batteries in the built environment an overview on types and applications","authors":"Jan Haase, Fares Al Juheshi, H. Nishi, J. Ploennigs, K. Tsang, N. Aljuhaishi, M. Alahmad","doi":"10.1109/IECON.2017.8217424","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217424","url":null,"abstract":"Recent trends in the applications of batteries in the built environment are improving the efficiency of batteries and lowering costs. This paper introduces various types of battery technologies such as sodium sulfur, lithium ion, flow and lead acid batteries and discusses their models. Various applications of batteries such as adaptive battery systems, Battery Electrical Vehicles (BEVs), Battery Energy Storage Systems (BESS), the Internet of Things (IoT), and Smart Grid and Smart Environment applications are also discussed. In their selection and use of batteries, scholars are ultimately looking to maximize occupant comfort whilst keeping costs low and optimizing the energy efficiency of buildings. This paper will provide a review of current trends in this field.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"86 1","pages":"8113-8118"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81594118","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 : 2017-12-15DOI: 10.1109/IECON.2017.8217255
Y. Nakajo, T. Noguchi, H. Nishi
With the recent emergence of smartphones, cloud computing, and the Internet of Things (IoT), our society has become more dependent on the Internet. In these circumstances, increasing energy consumption in data centers is becoming a crucial problem worldwide and data center managers are required to run them efficiently in terms of energy consumption. This study aims to reduce cooling airflow energy by achieving appropriate task distribution and adding a shutter control system, which reduces the energy consumption of an air-conditioner. In most cases, servers tend to be unnecessarily cooled at low temperatures, even when their exhaust temperatures are not high. Our proposed method solves this problem by using shutter control and introducing a task allocation method. We built an experimental rack model and implemented our proposed control system, validating it with a real HTTP data request. The results show that our experimental system reduces the cooling airflow energy by 4.4%.
{"title":"Efficient energy utilization based on task distribution and cooling airflow management in a data center","authors":"Y. Nakajo, T. Noguchi, H. Nishi","doi":"10.1109/IECON.2017.8217255","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217255","url":null,"abstract":"With the recent emergence of smartphones, cloud computing, and the Internet of Things (IoT), our society has become more dependent on the Internet. In these circumstances, increasing energy consumption in data centers is becoming a crucial problem worldwide and data center managers are required to run them efficiently in terms of energy consumption. This study aims to reduce cooling airflow energy by achieving appropriate task distribution and adding a shutter control system, which reduces the energy consumption of an air-conditioner. In most cases, servers tend to be unnecessarily cooled at low temperatures, even when their exhaust temperatures are not high. Our proposed method solves this problem by using shutter control and introducing a task allocation method. We built an experimental rack model and implemented our proposed control system, validating it with a real HTTP data request. The results show that our experimental system reduces the cooling airflow energy by 4.4%.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"115 1","pages":"7171-7176"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75262116","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 : 2017-12-15DOI: 10.1109/IECON.2017.8217477
S. Balasubramanian, Sara Afshar, Paolo Gai, M. Behnam, R. J. Bril
The flexible spin-lock model (FSLM) unifies suspension-based and spin-based resource sharing protocols for partitioned fixed-priority preemptive scheduling based real-time multiprocessor platforms. Recent work has been done in defining the protocol for FSLM and providing a schedulability analysis without accounting for the implementation overheads. In this paper, we extend the analysis for FSLM with implementation overheads. Utilizing an initial implementation of FSLM in the OSEK/VDX-compliant Erika Enterprise RTOS on an Altera Nios II platform using 4 soft-core processors, we present an improved implementation. Given the design of the implementation, the overheads are characterized and incorporated in specific terms of the existing analysis. The paper also supplements the analysis with measurement results, enabling an analytical comparison of FSLM with the natively provided multiprocessor stack resource policy (MSRP), which may serve as a guideline for the choice of FSLM or MSRP for a specific application.
{"title":"Incorporating implementation overheads in the analysis for the flexible spin-lock model","authors":"S. Balasubramanian, Sara Afshar, Paolo Gai, M. Behnam, R. J. Bril","doi":"10.1109/IECON.2017.8217477","DOIUrl":"https://doi.org/10.1109/IECON.2017.8217477","url":null,"abstract":"The flexible spin-lock model (FSLM) unifies suspension-based and spin-based resource sharing protocols for partitioned fixed-priority preemptive scheduling based real-time multiprocessor platforms. Recent work has been done in defining the protocol for FSLM and providing a schedulability analysis without accounting for the implementation overheads. In this paper, we extend the analysis for FSLM with implementation overheads. Utilizing an initial implementation of FSLM in the OSEK/VDX-compliant Erika Enterprise RTOS on an Altera Nios II platform using 4 soft-core processors, we present an improved implementation. Given the design of the implementation, the overheads are characterized and incorporated in specific terms of the existing analysis. The paper also supplements the analysis with measurement results, enabling an analytical comparison of FSLM with the natively provided multiprocessor stack resource policy (MSRP), which may serve as a guideline for the choice of FSLM or MSRP for a specific application.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"70 1","pages":"8411-8418"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76215698","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 : 2017-12-15DOI: 10.1109/IECON.2017.8216976
Koji Kobayashi, Hiromu Noritsuki, Y. Uchimura
This paper proposes a control method that compensates for a system with time delay by predicting the future states of the plant. The proposed method contains a state predictor that predicts the future values of a system. Furthermore, the proposed method also considers the uncertainty of the model in terms of the modeling error, which might cause the predicted value to degrade the performance of the system or even destabilize it in the worst case. The disturbance in the remote plant is explicitly considered and is compensated for by locating a feedback controller in the remote side. This paper described the proposed control method based on model-based predictive control that considers modeling error. The stability of the proposed system is analyzed, and performance of the method is evaluated in comparison with conventional methods using numerical simulation results.
{"title":"Model based predictive control for networked control system with time delay","authors":"Koji Kobayashi, Hiromu Noritsuki, Y. Uchimura","doi":"10.1109/IECON.2017.8216976","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216976","url":null,"abstract":"This paper proposes a control method that compensates for a system with time delay by predicting the future states of the plant. The proposed method contains a state predictor that predicts the future values of a system. Furthermore, the proposed method also considers the uncertainty of the model in terms of the modeling error, which might cause the predicted value to degrade the performance of the system or even destabilize it in the worst case. The disturbance in the remote plant is explicitly considered and is compensated for by locating a feedback controller in the remote side. This paper described the proposed control method based on model-based predictive control that considers modeling error. The stability of the proposed system is analyzed, and performance of the method is evaluated in comparison with conventional methods using numerical simulation results.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"59 1","pages":"5633-5638"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91187460","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 : 2017-12-15DOI: 10.1109/IECON.2017.8216779
Zhenbin Zhang, Mahmoud T. Larijani, W. Tian, Xiaonan Gao, José R. Rodríguez, R. Kennel
High voltage direct current (HVDC) transmission systems play an increasingly important role in offshore wind energy and long distance energy transmission systems. Modular multilevel converter (MMC) is an attractive topology for HVDC systems, due to its good modularity, scalability and inherent fault tolerant capabilities. For such topology, model predictive control (MPC) is a promising alternative. In particular, the long-horizon MPC provides better performances in terms of smaller THDs at very low switching frequency. However, its computational load is seen as a big challenge. In this paper we apply a long-horizon model predictive current control (MPCC) to a seven-level MMC-HVDC system. A switch and extrapolation and capacitor voltage sorting techniques are developed and combined to reduce the total computational burden. Performances of the proposed control strategy are evaluated with simulation results at a 65 MVA back-to-back 7L-MMC-HVDC configuration.
{"title":"Long-horizon predictive current control of modular-multilevel converter HVDC systems","authors":"Zhenbin Zhang, Mahmoud T. Larijani, W. Tian, Xiaonan Gao, José R. Rodríguez, R. Kennel","doi":"10.1109/IECON.2017.8216779","DOIUrl":"https://doi.org/10.1109/IECON.2017.8216779","url":null,"abstract":"High voltage direct current (HVDC) transmission systems play an increasingly important role in offshore wind energy and long distance energy transmission systems. Modular multilevel converter (MMC) is an attractive topology for HVDC systems, due to its good modularity, scalability and inherent fault tolerant capabilities. For such topology, model predictive control (MPC) is a promising alternative. In particular, the long-horizon MPC provides better performances in terms of smaller THDs at very low switching frequency. However, its computational load is seen as a big challenge. In this paper we apply a long-horizon model predictive current control (MPCC) to a seven-level MMC-HVDC system. A switch and extrapolation and capacitor voltage sorting techniques are developed and combined to reduce the total computational burden. Performances of the proposed control strategy are evaluated with simulation results at a 65 MVA back-to-back 7L-MMC-HVDC configuration.","PeriodicalId":13098,"journal":{"name":"IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society","volume":"11 1","pages":"4524-4530"},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91132817","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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