Pub Date : 2016-09-06DOI: 10.1109/EPE.2016.7695361
E. Amankwah, A. Costabeber, A. Watson, D. Trainer, O. Jasim, J. Chivite-Zabalza, J. Clare
This paper presents a novel hybrid modular multilevel voltage source converter suitable for HVDC applications. It has the advantages of other modular multilevel topologies and can be made more compact making it attractive for offshore stations and city infeed applications. The Operating principle of the converter and internal energy management are discussed with simulation results from a scaled medium voltage demonstrator presented to validate the concepts.
{"title":"The Series Bridge Converter (SBC): A hybrid modular multilevel converter for HVDC applications","authors":"E. Amankwah, A. Costabeber, A. Watson, D. Trainer, O. Jasim, J. Chivite-Zabalza, J. Clare","doi":"10.1109/EPE.2016.7695361","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695361","url":null,"abstract":"This paper presents a novel hybrid modular multilevel voltage source converter suitable for HVDC applications. It has the advantages of other modular multilevel topologies and can be made more compact making it attractive for offshore stations and city infeed applications. The Operating principle of the converter and internal energy management are discussed with simulation results from a scaled medium voltage demonstrator presented to validate the concepts.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134128633","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 : 2016-09-06DOI: 10.1109/EPE.2016.7695504
S. O'Donnell, J. Debauche, P. Wheeler, A. Castellazzi
This paper describes the design, construction and performance of a 5 kVA aviation power module containing silicon carbide MOSFETs. The function and control of this module within a commercial aviation power electrical control unit (ECU) application is explained and the power dissipation benefits from the use of these MOSFETs instead of silicon IGBTs when driving an electrical motor controlling an aileron are presented. The paper shows the calculated reliability figures for the power module in this application and an application-specific reliability test to verify 150,000 flight hours of module operation is introduced. Performance test results from a prototype unit are also presented.
{"title":"Silicon carbide MOSFETs in more electric aircraft power converters: The performance and reliability benefits over silicon IGBTs for a specified flight mission profile","authors":"S. O'Donnell, J. Debauche, P. Wheeler, A. Castellazzi","doi":"10.1109/EPE.2016.7695504","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695504","url":null,"abstract":"This paper describes the design, construction and performance of a 5 kVA aviation power module containing silicon carbide MOSFETs. The function and control of this module within a commercial aviation power electrical control unit (ECU) application is explained and the power dissipation benefits from the use of these MOSFETs instead of silicon IGBTs when driving an electrical motor controlling an aileron are presented. The paper shows the calculated reliability figures for the power module in this application and an application-specific reliability test to verify 150,000 flight hours of module operation is introduced. Performance test results from a prototype unit are also presented.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"7 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132243219","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 : 2016-09-05DOI: 10.1109/EPE.2016.7695314
K. Shinoda, A. Benchaib, J. Dai, X. Guillaud
The complex topology of the Modular Multilevel Converter (MMC) requires some additional controllers to keep its functionalities. One of the important requirements on the MMC control is to balance the energy stored in the distributed capacitors in the arms on the three legs. However, due to the superimposed internal DC and AC power flows in the converter, the energy stored in the arms contains intrinsic oscillations. This paper provides a thorough analysis on those intrinsic oscillations on the internal energy of the MMC. Based on the analysis, a novel analytic filter is proposed, which enables to extract average value of the energy while keeping other internal dynamics stable. The proposed filter is implemented on an EMTP-RV platform. The simulation demonstrates its improved dynamic response and reduction of the internal losses compared to the existing solutions.
{"title":"Energy control of modular multilevel converter with a novel analytic filter","authors":"K. Shinoda, A. Benchaib, J. Dai, X. Guillaud","doi":"10.1109/EPE.2016.7695314","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695314","url":null,"abstract":"The complex topology of the Modular Multilevel Converter (MMC) requires some additional controllers to keep its functionalities. One of the important requirements on the MMC control is to balance the energy stored in the distributed capacitors in the arms on the three legs. However, due to the superimposed internal DC and AC power flows in the converter, the energy stored in the arms contains intrinsic oscillations. This paper provides a thorough analysis on those intrinsic oscillations on the internal energy of the MMC. Based on the analysis, a novel analytic filter is proposed, which enables to extract average value of the energy while keeping other internal dynamics stable. The proposed filter is implemented on an EMTP-RV platform. The simulation demonstrates its improved dynamic response and reduction of the internal losses compared to the existing solutions.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"67 2-3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131922567","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 : 2016-09-05DOI: 10.1109/EPE.2016.7695398
C. Ji, A. Watson, J. Clare, C. M. Johnson
This paper presents a novel resonant based, high power density power electronics converter solution for mid-feeder voltage regulation of a low voltage (LV) distribution network. Owing to the use of high switching frequency operation and a full soft-switching control strategy, the proposed converter is capable of superimposing LV compensation into the feeder voltage, to achieve a significant system effect with a compact system volume and correspondingly smaller absolute power loss.
{"title":"A novel full soft-switching resonant power converter for mid-feeder voltage regulation of low voltage distribution network","authors":"C. Ji, A. Watson, J. Clare, C. M. Johnson","doi":"10.1109/EPE.2016.7695398","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695398","url":null,"abstract":"This paper presents a novel resonant based, high power density power electronics converter solution for mid-feeder voltage regulation of a low voltage (LV) distribution network. Owing to the use of high switching frequency operation and a full soft-switching control strategy, the proposed converter is capable of superimposing LV compensation into the feeder voltage, to achieve a significant system effect with a compact system volume and correspondingly smaller absolute power loss.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121451703","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 : 2016-09-05DOI: 10.1109/EPE.2016.7695257
E. Amicarelli, Q. Tran, S. Bacha
The decentralization of control and management in electrical grid is an important evolution to integrate distributed generation into the power grids ensuring power reliability, quality and safety. Microgrids and Multi-Agent Systems are considered the key to apply this evolution. This paper presents a Multi-Agent System architecture (developed in JADE) for Microgrid operation. Furthermore, a rule-based algorithm for day-ahead energy management of Microgrid considering dynamic market prices is presented.
{"title":"Multi-agent system for day-ahead energy management of microgrid","authors":"E. Amicarelli, Q. Tran, S. Bacha","doi":"10.1109/EPE.2016.7695257","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695257","url":null,"abstract":"The decentralization of control and management in electrical grid is an important evolution to integrate distributed generation into the power grids ensuring power reliability, quality and safety. Microgrids and Multi-Agent Systems are considered the key to apply this evolution. This paper presents a Multi-Agent System architecture (developed in JADE) for Microgrid operation. Furthermore, a rule-based algorithm for day-ahead energy management of Microgrid considering dynamic market prices is presented.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115783239","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695507
Xiang Ren, Dawei Li, R. Qu, Jian Li
The several new winding configurations, such as fractional slot concentrated winding and concentrated winding with two slot pitches, have been attracted lots of attentions due to their inherent advantages such as short ending winding, easy manufacture and so on. However, these winding configurations are always suffer from much richer magneto motive force(MMF) harmonic contents and their MMF waveforms are far from sinusoidal waves compared to regular integer slot winding, and this leads to that the existing the MMF analysis equations built for regular integer and factional slot distribution windings do not work well for these novel winding configurations, especially for poly-phase windings, whose phase number is not three. This paper proposes general equations for predicting the harmonic order for any poly-phase windings. The phase belt, distribution and slot pitch factors for multiphase winding configuration with highest fundamental are derived. Based on the proposed equations, the key electromagnetic performances of multiphase winding including regular three phase winding, such as harmonic orders and contents, can be efficiently and effectively predicted and calculated. Finally, Several FEA models are built to verify these equations.
{"title":"MMF harmonic analysis of polyphase windings based on the closed-form analytical equation","authors":"Xiang Ren, Dawei Li, R. Qu, Jian Li","doi":"10.1109/EPE.2016.7695507","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695507","url":null,"abstract":"The several new winding configurations, such as fractional slot concentrated winding and concentrated winding with two slot pitches, have been attracted lots of attentions due to their inherent advantages such as short ending winding, easy manufacture and so on. However, these winding configurations are always suffer from much richer magneto motive force(MMF) harmonic contents and their MMF waveforms are far from sinusoidal waves compared to regular integer slot winding, and this leads to that the existing the MMF analysis equations built for regular integer and factional slot distribution windings do not work well for these novel winding configurations, especially for poly-phase windings, whose phase number is not three. This paper proposes general equations for predicting the harmonic order for any poly-phase windings. The phase belt, distribution and slot pitch factors for multiphase winding configuration with highest fundamental are derived. Based on the proposed equations, the key electromagnetic performances of multiphase winding including regular three phase winding, such as harmonic orders and contents, can be efficiently and effectively predicted and calculated. Finally, Several FEA models are built to verify these equations.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115290541","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695592
U. Shipurkar, H. Polinder, J. Ferreira
Although the reliability of wind turbines have improved over time, there is still considerable interest in improving their availability. As the generator system has a sizeable contribution to the overall failure rates of turbines, it is important to consider methods of reducing the effects of these failures on the availability of turbines. This paper examines modular concepts for wind turbine generator systems from the point of view of increasing the availability of wind turbines. It explores the modularities possible in wind turbine generator systems at different layers, i.e. the functional and the physical layer. The paper also attempts to highlight some opportunities and challenges in including modularity in these layers.
{"title":"Modularity in wind türbine generator systems — Opportunities and challenges","authors":"U. Shipurkar, H. Polinder, J. Ferreira","doi":"10.1109/EPE.2016.7695592","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695592","url":null,"abstract":"Although the reliability of wind turbines have improved over time, there is still considerable interest in improving their availability. As the generator system has a sizeable contribution to the overall failure rates of turbines, it is important to consider methods of reducing the effects of these failures on the availability of turbines. This paper examines modular concepts for wind turbine generator systems from the point of view of increasing the availability of wind turbines. It explores the modularities possible in wind turbine generator systems at different layers, i.e. the functional and the physical layer. The paper also attempts to highlight some opportunities and challenges in including modularity in these layers.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115500366","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695547
H. Krupp, A. Mertens
In modern drive systems, electrically excited machines (ESM) have become an interesting alternative to those excited by permanent magnets. The excitation winding is normally supplied by a slip ring system that (in automotive applications) has to be protected against environmental influences like wetness, oil and dust. To increase the power density of ESM, brushless excitation systems based on rotationally symmetric transformers (fig. 1 b) begin to replace slip rings. Their insusceptibility to environmental influences is their major advantage compared to slip rings. To allow the movement of the secondary against the primary side, air gaps are needed. With the focus on vehicle drive applications, they must be designed with (air) gap widths between 0.5 mm and 1.0 mm, or accommodation of tolerances.
{"title":"Semi-analytical loss model for rotary transformers","authors":"H. Krupp, A. Mertens","doi":"10.1109/EPE.2016.7695547","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695547","url":null,"abstract":"In modern drive systems, electrically excited machines (ESM) have become an interesting alternative to those excited by permanent magnets. The excitation winding is normally supplied by a slip ring system that (in automotive applications) has to be protected against environmental influences like wetness, oil and dust. To increase the power density of ESM, brushless excitation systems based on rotationally symmetric transformers (fig. 1 b) begin to replace slip rings. Their insusceptibility to environmental influences is their major advantage compared to slip rings. To allow the movement of the secondary against the primary side, air gaps are needed. With the focus on vehicle drive applications, they must be designed with (air) gap widths between 0.5 mm and 1.0 mm, or accommodation of tolerances.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115696660","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695488
Yukai Wang, R. Lorenz
This paper introduces usage of Volt-sec. sensing in back-EMF-based self-sensing (sensorless) induction machine drives. In practice, both inverter nonlinearity and dc bus voltage affect back-EMF estimation accuracy, and therefore self-sensing performance. A real-time Volt-sec. sensing scheme to measure the terminal Volt-sec. vector for each switching period is introduced in the paper. The measured Volt-sec. information can be used in the back-EMF state filter such that the effects from inverter nonlinearity and dc bus voltage measurement errors are mitigated. The resulting extended low speed range and enhanced disturbance rejection capability are quantified via experimental evaluation.
{"title":"Using Volt-sec. sensing to extend the low speed range and the disturbance rejection capability of back-EMF-based self-sensing","authors":"Yukai Wang, R. Lorenz","doi":"10.1109/EPE.2016.7695488","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695488","url":null,"abstract":"This paper introduces usage of Volt-sec. sensing in back-EMF-based self-sensing (sensorless) induction machine drives. In practice, both inverter nonlinearity and dc bus voltage affect back-EMF estimation accuracy, and therefore self-sensing performance. A real-time Volt-sec. sensing scheme to measure the terminal Volt-sec. vector for each switching period is introduced in the paper. The measured Volt-sec. information can be used in the back-EMF state filter such that the effects from inverter nonlinearity and dc bus voltage measurement errors are mitigated. The resulting extended low speed range and enhanced disturbance rejection capability are quantified via experimental evaluation.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117066125","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695379
Masafumi Otsuka, K. W. L. David, O. Trescases
This work targets a novel self-powered Smart Circuit Breaker (SCB) for monitoring and controlling power in emerging small-scale AC nano-grids. The SCB concept is intended as a direct replacement of standard(120 Vac, 15 Arms) household circuit breakers, which imposes several challenging constraints. The SCB must therefore generate its own internal supply from the small AC voltage drop across the main switch when the breaker is closed. The SCB is composed of the following key blocks: 1) back-to-back 900 V Silicon Carbide (SiC) MOSFETs as the main power switches, 2) a low-voltage energy harvesting circuit, 3) a high-voltage step-down converter, and 4) low-power digital controller and wireless communication circuits. In order to stabilize the internal supply voltage under a wide range of AC load currents, a novel approach of dynamic on-resistance control is implemented, through adaptive gate-drive and MOSFET segmentation. The fabricated SCB prototype dissipates only 7.4 W for a 13 Arms AC load, corresponding to an efficiency of 99.5%.
{"title":"Power management for self-powered SiC based AC smart-breaker for nano-grid applications","authors":"Masafumi Otsuka, K. W. L. David, O. Trescases","doi":"10.1109/EPE.2016.7695379","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695379","url":null,"abstract":"This work targets a novel self-powered Smart Circuit Breaker (SCB) for monitoring and controlling power in emerging small-scale AC nano-grids. The SCB concept is intended as a direct replacement of standard(120 Vac, 15 Arms) household circuit breakers, which imposes several challenging constraints. The SCB must therefore generate its own internal supply from the small AC voltage drop across the main switch when the breaker is closed. The SCB is composed of the following key blocks: 1) back-to-back 900 V Silicon Carbide (SiC) MOSFETs as the main power switches, 2) a low-voltage energy harvesting circuit, 3) a high-voltage step-down converter, and 4) low-power digital controller and wireless communication circuits. In order to stabilize the internal supply voltage under a wide range of AC load currents, a novel approach of dynamic on-resistance control is implemented, through adaptive gate-drive and MOSFET segmentation. The fabricated SCB prototype dissipates only 7.4 W for a 13 Arms AC load, corresponding to an efficiency of 99.5%.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127306457","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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