Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980548
J. Rąbkowski, S. Piasecki, M. Kazmierkowski
This paper describes a design procedure of a three-phase AC/DC converter with special focus on semiconductors: paralleled SiC MOSFETs and SiC Schottky diodes. The converter is aimed to operate as a 14kVA Support Converter (SC) for the 55kVA AC drive system. The SC acts as active parallel filter during normal operation of the drive and is also capable to return part of the regenerative breaking energy to the supply grid. Initial calculations of power losses conducted with Matlab are verified by simulations in SABER software. Laboratory model designed on the base of calculations and simulations was tested with special attention to power losses measurements. Total efficiency of the AC/DC converter (including LC filter and gate drivers) measured during inverter operation is on the level of 98.8% at switching frequency of 40kHz.
{"title":"Design of a three-phase AC/DC converter with paralleled SiC MOSFETs","authors":"J. Rąbkowski, S. Piasecki, M. Kazmierkowski","doi":"10.1109/EPEPEMC.2014.6980548","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980548","url":null,"abstract":"This paper describes a design procedure of a three-phase AC/DC converter with special focus on semiconductors: paralleled SiC MOSFETs and SiC Schottky diodes. The converter is aimed to operate as a 14kVA Support Converter (SC) for the 55kVA AC drive system. The SC acts as active parallel filter during normal operation of the drive and is also capable to return part of the regenerative breaking energy to the supply grid. Initial calculations of power losses conducted with Matlab are verified by simulations in SABER software. Laboratory model designed on the base of calculations and simulations was tested with special attention to power losses measurements. Total efficiency of the AC/DC converter (including LC filter and gate drivers) measured during inverter operation is on the level of 98.8% at switching frequency of 40kHz.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"23 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130900482","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980522
Mamadou Oury Fatoumata Diallo, S. Youssef, H. Gualous, M. Camara, B. Dakyo
This paper presents the control strategy of the permanent magnet synchronous generator (PMSG) destined to Raz Blanchard's tidal turbine application. Used PMSG presents a rated power of 2 MW connected to a tidal turbine with a radius of 10 m. The produced energy is injected in electrical grid with line to line RSM voltage of 20kV-50Hz. The used converter for energy management is based on back-to-back configuration. Proposed control strategies are implemented in Matlab/Simulink software for system simulations. The simulations are done using the tidal current magnitude obtained from hydrodynamic model, and obtained results are presented and analyzed.
{"title":"Permanent magnet synchronous generator for tidal turbine application in Raz Blanchard — Modeling and control strategy","authors":"Mamadou Oury Fatoumata Diallo, S. Youssef, H. Gualous, M. Camara, B. Dakyo","doi":"10.1109/EPEPEMC.2014.6980522","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980522","url":null,"abstract":"This paper presents the control strategy of the permanent magnet synchronous generator (PMSG) destined to Raz Blanchard's tidal turbine application. Used PMSG presents a rated power of 2 MW connected to a tidal turbine with a radius of 10 m. The produced energy is injected in electrical grid with line to line RSM voltage of 20kV-50Hz. The used converter for energy management is based on back-to-back configuration. Proposed control strategies are implemented in Matlab/Simulink software for system simulations. The simulations are done using the tidal current magnitude obtained from hydrodynamic model, and obtained results are presented and analyzed.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130934342","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980553
A. Gencer
Due to the rapid development of technology, the new applications are occurring into presence which request high efficient speed control and high efficient position control. So, travelling wave ultrasonic motors (TWUSM) have been drawn attention as important actuators for position control and speed control applications of late years. The relationship between rotor speed and different load behaviours of the TWUSM is not linear. In order to solve this nonlinearities and variation problems of TWUSM, proportional-integral (PI) controller, proportional integral-derivative (PID) controller, frequency controller and phase difference controller are proposed and implemented for position control and rotor speed control in this study. There are many speed control techniques such as frequency control, applied voltage phase difference control, applied voltage amplitude control. Besides these control techniques increase the efficiency of the system, we required to design control techniques which using TWUSM position control. For this we make use of the control system techniques such as controllers and compensation techniques. The proposed system evaluates the steady-state performance of TWUSM driver system by using PID controller, frequency controller, and phase difference controller. The obtained simulation results of the proposed technique are analyzed and presented with comparisons.
{"title":"A new speed/position control technique for travelling wave ultrasonic motor under different load conditions","authors":"A. Gencer","doi":"10.1109/EPEPEMC.2014.6980553","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980553","url":null,"abstract":"Due to the rapid development of technology, the new applications are occurring into presence which request high efficient speed control and high efficient position control. So, travelling wave ultrasonic motors (TWUSM) have been drawn attention as important actuators for position control and speed control applications of late years. The relationship between rotor speed and different load behaviours of the TWUSM is not linear. In order to solve this nonlinearities and variation problems of TWUSM, proportional-integral (PI) controller, proportional integral-derivative (PID) controller, frequency controller and phase difference controller are proposed and implemented for position control and rotor speed control in this study. There are many speed control techniques such as frequency control, applied voltage phase difference control, applied voltage amplitude control. Besides these control techniques increase the efficiency of the system, we required to design control techniques which using TWUSM position control. For this we make use of the control system techniques such as controllers and compensation techniques. The proposed system evaluates the steady-state performance of TWUSM driver system by using PID controller, frequency controller, and phase difference controller. The obtained simulation results of the proposed technique are analyzed and presented with comparisons.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129675301","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980576
C. Pavlitov, T. Tashev, A. Dimitrov, Yassen Gorbounov, R. Rusinov
This paper deals with rotor position estimation of switched reluctance motors (SRM). The estimation method can be applied in SRM sensorless control of position speed and torque controllers. The implementation suggested is based on a real time adaptive filter. The measured variables are supply voltage and stator currents. These currents are used repeatedly for rotor position estimation by using linear adaptive filter which time constant is adjusted to the speed of the rotor. The result of this estimation is a rather precise and convenient rotor angle determining device for SRM sensorless control electrical drives.
{"title":"Rotor position estimation for a sensorless switched reluctance motor drive with the aid of real time adaptive filter","authors":"C. Pavlitov, T. Tashev, A. Dimitrov, Yassen Gorbounov, R. Rusinov","doi":"10.1109/EPEPEMC.2014.6980576","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980576","url":null,"abstract":"This paper deals with rotor position estimation of switched reluctance motors (SRM). The estimation method can be applied in SRM sensorless control of position speed and torque controllers. The implementation suggested is based on a real time adaptive filter. The measured variables are supply voltage and stator currents. These currents are used repeatedly for rotor position estimation by using linear adaptive filter which time constant is adjusted to the speed of the rotor. The result of this estimation is a rather precise and convenient rotor angle determining device for SRM sensorless control electrical drives.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127030124","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980528
M. Gulin, M. Vašak, T. Pavlovic
Residential microgrids are mainly based on renewable energy sources (i.e., mainly on photovoltaic panels), energy storage systems (that enable time-shift between production and consumption), and on power converters representing control points that by proper operation ensure overall system stability and quality of power supply. For optimal techno-economical microgrid operation, i.e. microgrid voltage level control and power flow management, the models of microgrid components involved must be known. In this paper we verify a single-diode five-parameters equivalent electrical model of a photovoltaic array by experiments, and based on the verified model propose a new power production model suitable for microgrid power flow optimization applications. Microgrid components are connected to a common power link via an appropriate power converter in order to ensure components' maximum efficiency and the overall system stability. Simulation of DC/DC power converters on a switching level requires significant computational efforts due to high switching frequencies (10-100 kHz). However, it is shown that dynamical behaviour of a DC/DC power converter in closed control loop can be replaced by a PT2 dynamic element with good approximation accuracy. All equivalent electrical models presented in this paper are implemented in the professional simulation platform for power electronic systems Plexim PLECS.
{"title":"Model identification of a photovoltaic system for a DC microgrid simulation","authors":"M. Gulin, M. Vašak, T. Pavlovic","doi":"10.1109/EPEPEMC.2014.6980528","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980528","url":null,"abstract":"Residential microgrids are mainly based on renewable energy sources (i.e., mainly on photovoltaic panels), energy storage systems (that enable time-shift between production and consumption), and on power converters representing control points that by proper operation ensure overall system stability and quality of power supply. For optimal techno-economical microgrid operation, i.e. microgrid voltage level control and power flow management, the models of microgrid components involved must be known. In this paper we verify a single-diode five-parameters equivalent electrical model of a photovoltaic array by experiments, and based on the verified model propose a new power production model suitable for microgrid power flow optimization applications. Microgrid components are connected to a common power link via an appropriate power converter in order to ensure components' maximum efficiency and the overall system stability. Simulation of DC/DC power converters on a switching level requires significant computational efforts due to high switching frequencies (10-100 kHz). However, it is shown that dynamical behaviour of a DC/DC power converter in closed control loop can be replaced by a PT2 dynamic element with good approximation accuracy. All equivalent electrical models presented in this paper are implemented in the professional simulation platform for power electronic systems Plexim PLECS.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126314042","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980608
Tin Bariša, Mihovil Bartulovic, Goran Zuzic, Š. Ileš, J. Matuško, F. Kolonic
In this paper nonlinear Model Predictive Control of a tower crane based on reference shaping is proposed. MPC controller is used to calculate optimal reference for the inner control loop of the tower crane. The main objectives that the MPC controller needs to fulfill are tracking the reference position, suppressing the payload oscillations while satisfying operational constraints of the crane. The inner loop consists of P position controller and PI velocity controller which is common in industrial applications and easily implementable in standard frequency converters used in the cranes. The proposed approach is verified through simulation and experimental test on laboratory model of a 3D tower crane.
{"title":"Nonlinear predictive control of a tower crane using reference shaping approach","authors":"Tin Bariša, Mihovil Bartulovic, Goran Zuzic, Š. Ileš, J. Matuško, F. Kolonic","doi":"10.1109/EPEPEMC.2014.6980608","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980608","url":null,"abstract":"In this paper nonlinear Model Predictive Control of a tower crane based on reference shaping is proposed. MPC controller is used to calculate optimal reference for the inner control loop of the tower crane. The main objectives that the MPC controller needs to fulfill are tracking the reference position, suppressing the payload oscillations while satisfying operational constraints of the crane. The inner loop consists of P position controller and PI velocity controller which is common in industrial applications and easily implementable in standard frequency converters used in the cranes. The proposed approach is verified through simulation and experimental test on laboratory model of a 3D tower crane.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127219979","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 : 2014-12-11DOI: 10.6113/JPE.2015.15.2.319
Sang-Soo Hwang, Won-Sun Hwang, Byung-Jun Jang, Sang-Kyoo Han, Jeong-Il Kang
In this paper, we propose a cost-effective single switch multi-channel LED (light emitting diode) driver. While conventional LED drivers require as many non-isolated DC/DC converters as the number of LED channels, the proposed LED driver needs only one power switch and several balancing capacitors instead of expensive non-isolated DC/DC converters. Therefore, the proposed driver features a simpler structure, with lower cost, and higher efficiency. In particular, because its power switch can be turned off under the zero current switching condition, it has very desirable advantages such as improved electromagnetic interference characteristics and high efficiency. Moreover, it uses only a small number of DC blocking capacitors with no additional active devices for current balancing of multi-channel LEDs, so the proposed driver exhibits high reliability and is cost effective. To confirm the validity of the proposed driver, we perform a theoretical analysis, and present design considerations and experimental results obtained from a prototype that is applicable to a 46” LED-TV.
{"title":"Cost-effective single switch multi-channel LED driver","authors":"Sang-Soo Hwang, Won-Sun Hwang, Byung-Jun Jang, Sang-Kyoo Han, Jeong-Il Kang","doi":"10.6113/JPE.2015.15.2.319","DOIUrl":"https://doi.org/10.6113/JPE.2015.15.2.319","url":null,"abstract":"In this paper, we propose a cost-effective single switch multi-channel LED (light emitting diode) driver. While conventional LED drivers require as many non-isolated DC/DC converters as the number of LED channels, the proposed LED driver needs only one power switch and several balancing capacitors instead of expensive non-isolated DC/DC converters. Therefore, the proposed driver features a simpler structure, with lower cost, and higher efficiency. In particular, because its power switch can be turned off under the zero current switching condition, it has very desirable advantages such as improved electromagnetic interference characteristics and high efficiency. Moreover, it uses only a small number of DC blocking capacitors with no additional active devices for current balancing of multi-channel LEDs, so the proposed driver exhibits high reliability and is cost effective. To confirm the validity of the proposed driver, we perform a theoretical analysis, and present design considerations and experimental results obtained from a prototype that is applicable to a 46” LED-TV.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127433394","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980596
Y. Onal, O. Gerek, D. G. Ece
Hilbert Huang Transform, which was suggested by Huang and improved by Flandrin and his group, is a new signal processing method. The analysis of nonlinear and non stationary signals can use HHT. This paper deals with the use of a HHT to detect and analyze voltage harmonics and flickers. In this method, the recorded harmonic signal and flicker signal are decomposed into Intrinsic Mode Functions using the Emprical Mode Decomposition. The frequency and amplitude of voltage harmonics and voltage flickers are obtained of IMF components by using Hilbert Transform HT. The clear success of EMD in defining envelope variations of a sinusoidal waveform has been the main motivation for the adoption of HHT in harmonic and flicker analysis. Simulations are performed over waveforms including voltage harmonics and voltage flickers. The waveforms are selected as pure sinusoids. Simulation results show that the suggested methodology constitutes a credible way to analyze voltage harmonics and voltage flickers.
{"title":"Detection of voltage flicker and voltage harmonic using Hilbert Huang Transform","authors":"Y. Onal, O. Gerek, D. G. Ece","doi":"10.1109/EPEPEMC.2014.6980596","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980596","url":null,"abstract":"Hilbert Huang Transform, which was suggested by Huang and improved by Flandrin and his group, is a new signal processing method. The analysis of nonlinear and non stationary signals can use HHT. This paper deals with the use of a HHT to detect and analyze voltage harmonics and flickers. In this method, the recorded harmonic signal and flicker signal are decomposed into Intrinsic Mode Functions using the Emprical Mode Decomposition. The frequency and amplitude of voltage harmonics and voltage flickers are obtained of IMF components by using Hilbert Transform HT. The clear success of EMD in defining envelope variations of a sinusoidal waveform has been the main motivation for the adoption of HHT in harmonic and flicker analysis. Simulations are performed over waveforms including voltage harmonics and voltage flickers. The waveforms are selected as pure sinusoids. Simulation results show that the suggested methodology constitutes a credible way to analyze voltage harmonics and voltage flickers.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127304079","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980598
C. Engelhard, A. Lohner, Magnus Boh
This paper presents the development of a multifunctional DC-DC converter which combines the function of two, normally separate converters, for use in Plug-in electrical-or hybrid electrical vehicles. A bidirectional high power DC-DC converter connects the traction battery and the DC-Link. The same hardware is able to load the traction battery from a single phase power grid, with a Power Factor Correction (PFC) to ensure the compliance of standards. In case of reduced hardware components cost and construction volume can be decreased.
{"title":"Development of a multifunctional multiphase DC/DC-converter for traction battery coupling with integrated charging function","authors":"C. Engelhard, A. Lohner, Magnus Boh","doi":"10.1109/EPEPEMC.2014.6980598","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980598","url":null,"abstract":"This paper presents the development of a multifunctional DC-DC converter which combines the function of two, normally separate converters, for use in Plug-in electrical-or hybrid electrical vehicles. A bidirectional high power DC-DC converter connects the traction battery and the DC-Link. The same hardware is able to load the traction battery from a single phase power grid, with a Power Factor Correction (PFC) to ensure the compliance of standards. In case of reduced hardware components cost and construction volume can be decreased.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124053237","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980678
E. Kontos, R. T. Pinto, P. Bauer, E. Wiggelinkhuizen
The increasing global energy needs have led to the realization of interconnectors to strengthen regional electricity systems. As interconnectors are often placed offshore, combining those with wind farm grids can increase profitability compared to separate infrastructure and improve the grid integration, offering higher security of supply and controllability. However, a systematic approach for selecting the best transmission options for offshore multi-terminal networks is still missing in literature. This paper investigates options for interconnecting two offshore wind farms (OWFs) to two onshore asynchronous grids in a multi-terminal network. The options are presented for a case study comprising the Dutch and the British grid along with two OWFs in the coastal zone of each country. A review of the available technologies regarding high-voltage ac (HVac) and high-voltage dc (HVdc) transmission systems is given and, on this basis, six technical scenarios are identified and evaluated. For each scenario, the technical specifications are elaborated and a rough cost calculation is made. Based on the design possibilities for a four-terminal network, the technical bottlenecks and the most important research challenges for its realization are presented.
{"title":"Multi-terminal network options for the interconnection of offshore wind farms: A case study between Britain and The Netherlands","authors":"E. Kontos, R. T. Pinto, P. Bauer, E. Wiggelinkhuizen","doi":"10.1109/EPEPEMC.2014.6980678","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980678","url":null,"abstract":"The increasing global energy needs have led to the realization of interconnectors to strengthen regional electricity systems. As interconnectors are often placed offshore, combining those with wind farm grids can increase profitability compared to separate infrastructure and improve the grid integration, offering higher security of supply and controllability. However, a systematic approach for selecting the best transmission options for offshore multi-terminal networks is still missing in literature. This paper investigates options for interconnecting two offshore wind farms (OWFs) to two onshore asynchronous grids in a multi-terminal network. The options are presented for a case study comprising the Dutch and the British grid along with two OWFs in the coastal zone of each country. A review of the available technologies regarding high-voltage ac (HVac) and high-voltage dc (HVdc) transmission systems is given and, on this basis, six technical scenarios are identified and evaluated. For each scenario, the technical specifications are elaborated and a rough cost calculation is made. Based on the design possibilities for a four-terminal network, the technical bottlenecks and the most important research challenges for its realization are presented.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129362102","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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