Pub Date : 2016-10-01DOI: 10.1109/IAS.2016.7731849
Longfei Wei, A. Sarwat, W. Saad
In this paper, the risk assessment of coordinated cyber-physical attacks against power grids is investigated using a novel game-theoretic framework. In particular, to address the dynamic nature of the power grid protection, a stochastic budget allocation game is proposed to analyze the strategic interactions between a malicious attacker and the grid defender while factoring in the attack and defense budget limitations. In this game, the attacker intends to maximize the physical impacts of coordinated attacks on the grid while the defender aims to minimize these impacts. An optimal load shedding problem is formulated to measure such physical impacts under successful attacks, and these impacts are then incorporated into a learning algorithm as inputs for finding the Nash equilibrium of the game. The two players' optimal strategies at Nash equilibrium, in terms of attacking/protecting the critical grid elements, can be used to assess the risk faced by the grid at various states. In addition, the optimal defense budget allocation strategy is expressed in terms of the corresponding risk. The proposed stochastic game framework is tested on the IEEE 9-bus system for illustrative purpose, and risk sensitivity to the attack/defense budget variation is analyzed.
{"title":"Risk assessment of coordinated cyber-physical attacks against power grids: A stochastic game approach","authors":"Longfei Wei, A. Sarwat, W. Saad","doi":"10.1109/IAS.2016.7731849","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731849","url":null,"abstract":"In this paper, the risk assessment of coordinated cyber-physical attacks against power grids is investigated using a novel game-theoretic framework. In particular, to address the dynamic nature of the power grid protection, a stochastic budget allocation game is proposed to analyze the strategic interactions between a malicious attacker and the grid defender while factoring in the attack and defense budget limitations. In this game, the attacker intends to maximize the physical impacts of coordinated attacks on the grid while the defender aims to minimize these impacts. An optimal load shedding problem is formulated to measure such physical impacts under successful attacks, and these impacts are then incorporated into a learning algorithm as inputs for finding the Nash equilibrium of the game. The two players' optimal strategies at Nash equilibrium, in terms of attacking/protecting the critical grid elements, can be used to assess the risk faced by the grid at various states. In addition, the optimal defense budget allocation strategy is expressed in terms of the corresponding risk. The proposed stochastic game framework is tested on the IEEE 9-bus system for illustrative purpose, and risk sensitivity to the attack/defense budget variation is analyzed.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124206701","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731861
M. Roetzer, U. Vollmer, R. Kennel
This paper describes a demodulation approach based on the least squares method for a saliency based position estimation in slowly sampled field-oriented control systems. The proposed approach focuses on the sensorless control of electrical drives in which the sample rate of the control task is chosen slower than both the maximum possible update rate of the phase voltages and the maximum possible sample rate of the phase current measurement by a multiple. Under those conditions it is possible to inject multiple-frequency carrier signals between two successive control sampling instances without affecting the control. Furthermore, a combined demodulation of these signals is enabled by exploiting the constant manipulated variables of the field-oriented control system during the injection sequence. With the proposed method the signal-to-noise-ratio (SNR) of the calculated rotor position as well as the acoustic noise produced by signal injections can be optimized. The approach is implemented in a field-oriented control for permanent magnet synchronous machines (PMSM) and is verified in experiments.
{"title":"Demodulation approach for slowly sampled sensorless field-oriented control systems enabling multiple-frequency injections","authors":"M. Roetzer, U. Vollmer, R. Kennel","doi":"10.1109/IAS.2016.7731861","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731861","url":null,"abstract":"This paper describes a demodulation approach based on the least squares method for a saliency based position estimation in slowly sampled field-oriented control systems. The proposed approach focuses on the sensorless control of electrical drives in which the sample rate of the control task is chosen slower than both the maximum possible update rate of the phase voltages and the maximum possible sample rate of the phase current measurement by a multiple. Under those conditions it is possible to inject multiple-frequency carrier signals between two successive control sampling instances without affecting the control. Furthermore, a combined demodulation of these signals is enabled by exploiting the constant manipulated variables of the field-oriented control system during the injection sequence. With the proposed method the signal-to-noise-ratio (SNR) of the calculated rotor position as well as the acoustic noise produced by signal injections can be optimized. The approach is implemented in a field-oriented control for permanent magnet synchronous machines (PMSM) and is verified in experiments.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115570105","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731942
C. Bates, K. Malmedal, D. Cain
Previous papers have described a method to calculate and model the extent of drying that will occur in soil due to the heat produced by underground cables. Up until now, the techniques presented to include soil thermal instability in cable ampacity calculations have been limited to single isolated conductors with 100% load factors. This paper provides more generalized techniques that permit the inclusion of soil thermal instability in any calculation that can be performed using the Neher-McGrath method. Computer programs designed to perform Neher-McGrath calculations are often limited in their versatility and restrict the user in the type of inputs that may be entered. This paper includes suggestions that will permit the computer user to include soil thermal instability information in calculations done using commercially available computer programs.
{"title":"How to include soil thermal instability in underground cable ampacity calculations","authors":"C. Bates, K. Malmedal, D. Cain","doi":"10.1109/IAS.2016.7731942","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731942","url":null,"abstract":"Previous papers have described a method to calculate and model the extent of drying that will occur in soil due to the heat produced by underground cables. Up until now, the techniques presented to include soil thermal instability in cable ampacity calculations have been limited to single isolated conductors with 100% load factors. This paper provides more generalized techniques that permit the inclusion of soil thermal instability in any calculation that can be performed using the Neher-McGrath method. Computer programs designed to perform Neher-McGrath calculations are often limited in their versatility and restrict the user in the type of inputs that may be entered. This paper includes suggestions that will permit the computer user to include soil thermal instability information in calculations done using commercially available computer programs.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115896154","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731841
R. Niwas, Bhim Singh
This manuscript presents the unity power factor (UPF) operation and load leveling of diesel generator (DG) set. The proposed system comprises a wound field synchronous generator driven by diesel engine run at a constant speed. A pulse width modulated voltage source converter (PWM-VSC) is used to supply the reactive power demand of the load. DC link of VSC has a battery for achieving the load leveling. The system is designed in such a manner that battery supplies the real power to the load during over load periods and stores the energy during light loads so that current drawn from generator is always optimal from 80 % to 100% of its rated capacity of the generator. The load leveling assists in optimization of fuel efficiency of diesel engine. In addition the use of PWM-VSC helps in harmonics elimination and load balancing. A control algorithm based on composite state observer has been used in the proposed DG set system to generate the gating pulses of PWM-VSC.
{"title":"Unity power factor operation and load leveling of diesel generator set using battery energy storage system","authors":"R. Niwas, Bhim Singh","doi":"10.1109/IAS.2016.7731841","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731841","url":null,"abstract":"This manuscript presents the unity power factor (UPF) operation and load leveling of diesel generator (DG) set. The proposed system comprises a wound field synchronous generator driven by diesel engine run at a constant speed. A pulse width modulated voltage source converter (PWM-VSC) is used to supply the reactive power demand of the load. DC link of VSC has a battery for achieving the load leveling. The system is designed in such a manner that battery supplies the real power to the load during over load periods and stores the energy during light loads so that current drawn from generator is always optimal from 80 % to 100% of its rated capacity of the generator. The load leveling assists in optimization of fuel efficiency of diesel engine. In addition the use of PWM-VSC helps in harmonics elimination and load balancing. A control algorithm based on composite state observer has been used in the proposed DG set system to generate the gating pulses of PWM-VSC.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121125380","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731885
Abilash Thakallapelli, Sudipta Ghosh, S. Kamalasadan
In this paper a real-time reduced order model based adaptive pitch controller for grid connected wind turbines is proposed. First, a reduced grid model is generated online considering the power grid as an external area. This model is then used to derive the speed reference for the proposed pitch controller. Then an adaptive controller is designed that uses the difference of speed of the generator and the reference speed to limit the speed and aerodynamic power at the rated values of the wind turbine during high wind speed conditions. The advantage of the proposed reduced order model based pitch-control architecture is that the method minimizes the damage caused by mechanical fatigue of the wind turbine and at the same time ensures that the grid voltage and power is stable and balanced. The architecture is tested on a grid integrated wind turbine model. Then an experimental set up using real-time digital simulator (RTDS) is used to further evaluate the methodology.
{"title":"Real-time reduced order model based adaptive pitch controller for grid connected wind turbines","authors":"Abilash Thakallapelli, Sudipta Ghosh, S. Kamalasadan","doi":"10.1109/IAS.2016.7731885","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731885","url":null,"abstract":"In this paper a real-time reduced order model based adaptive pitch controller for grid connected wind turbines is proposed. First, a reduced grid model is generated online considering the power grid as an external area. This model is then used to derive the speed reference for the proposed pitch controller. Then an adaptive controller is designed that uses the difference of speed of the generator and the reference speed to limit the speed and aerodynamic power at the rated values of the wind turbine during high wind speed conditions. The advantage of the proposed reduced order model based pitch-control architecture is that the method minimizes the damage caused by mechanical fatigue of the wind turbine and at the same time ensures that the grid voltage and power is stable and balanced. The architecture is tested on a grid integrated wind turbine model. Then an experimental set up using real-time digital simulator (RTDS) is used to further evaluate the methodology.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126508362","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731851
A. Elsayed, N. Elsayad, O. Mohammed
The weight of onboard equipment represents a major concern in transportation systems. In ship power systems, in addition to weigh concerns, some loads are frequently demanding high power for short time durations. Thus, adding energy storage is mandatory to smooth the effect of these loads. This paper introduces a methodology based on Pareto concept to optimally size and select the mix of different energy storage technologies. The problem is formulated as a multi-objective Optimization (MOO), where two objectives are considered. The first is to minimize the voltage fluctuations on the buses and the second is to minimize the total weight of the Energy Storage System (ESS). Three candidate energy storage technologies were considered; lead acid, lithium ion batteries and Super-capacitors. The Pareto Front (PF) was obtained using Non-dominated Sorting Genetic Algorithms II (NSGA-II). The results show the feasibility and computational efficiency of the proposed methodology.
机载设备的重量是运输系统的一个主要问题。在船舶动力系统中，除了重量问题外，一些负载经常需要短时间内的高功率。因此，增加能量存储是必须的，以平滑这些负载的影响。本文介绍了一种基于帕累托概念的方法来优化不同储能技术的规模和选择组合。该问题被表述为一个多目标优化(MOO)，其中考虑了两个目标。首先是尽量减少母线上的电压波动，其次是尽量减少储能系统的总重量。考虑了三种候选储能技术;铅酸、锂离子电池和超级电容器。采用非支配排序遗传算法II (NSGA-II)获得Pareto Front (PF)。结果表明了该方法的可行性和计算效率。
{"title":"Pareto based optimal sizing and energy storage mix in ship power systems","authors":"A. Elsayed, N. Elsayad, O. Mohammed","doi":"10.1109/IAS.2016.7731851","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731851","url":null,"abstract":"The weight of onboard equipment represents a major concern in transportation systems. In ship power systems, in addition to weigh concerns, some loads are frequently demanding high power for short time durations. Thus, adding energy storage is mandatory to smooth the effect of these loads. This paper introduces a methodology based on Pareto concept to optimally size and select the mix of different energy storage technologies. The problem is formulated as a multi-objective Optimization (MOO), where two objectives are considered. The first is to minimize the voltage fluctuations on the buses and the second is to minimize the total weight of the Energy Storage System (ESS). Three candidate energy storage technologies were considered; lead acid, lithium ion batteries and Super-capacitors. The Pareto Front (PF) was obtained using Non-dominated Sorting Genetic Algorithms II (NSGA-II). The results show the feasibility and computational efficiency of the proposed methodology.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121728466","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731818
C. Su, Chi-Hsiang Liao, Tso-Chu Chou, Min-Hung Chou, J. Guerrero
Pumps are extensively used in maritime industries as marine vessels utilize a wide range of pumps and pumping techniques to transfer and distribute all types of air and fluids. The electrical energy consumed by the various motors accounts for about 70% of a vessel's total power consumption, and this presents a problem in unique marine environments. Such situations are especially conducive to energy-saving strategies using variable frequency drives (VFDs) in centrifugal load service. This paper presents the design and results of applying variable frequency constant pressure technology in closed system pumps on marine vessels. The existing problem of traditional control methods for closed system pumps is analyzed and a mathematical model for variable flow controls with the appropriate control settings is derived. The performance of the proposed method is demonstrated and verified through experimental and field tests of a practical auxiliary boiler feed water management system on a commercial vessel. It is proved that the proposed method can maintain constant water pressure for closed system pumps and provide an efficient way to measure energy savings and maintenance benefits. The results serve to highlight the significant energy-saving opportunities for retrofitted and new VFD installations in marine power applications.
{"title":"Variable flow controls of closed system pumps for energy savings in maritime power systems","authors":"C. Su, Chi-Hsiang Liao, Tso-Chu Chou, Min-Hung Chou, J. Guerrero","doi":"10.1109/IAS.2016.7731818","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731818","url":null,"abstract":"Pumps are extensively used in maritime industries as marine vessels utilize a wide range of pumps and pumping techniques to transfer and distribute all types of air and fluids. The electrical energy consumed by the various motors accounts for about 70% of a vessel's total power consumption, and this presents a problem in unique marine environments. Such situations are especially conducive to energy-saving strategies using variable frequency drives (VFDs) in centrifugal load service. This paper presents the design and results of applying variable frequency constant pressure technology in closed system pumps on marine vessels. The existing problem of traditional control methods for closed system pumps is analyzed and a mathematical model for variable flow controls with the appropriate control settings is derived. The performance of the proposed method is demonstrated and verified through experimental and field tests of a practical auxiliary boiler feed water management system on a commercial vessel. It is proved that the proposed method can maintain constant water pressure for closed system pumps and provide an efficient way to measure energy savings and maintenance benefits. The results serve to highlight the significant energy-saving opportunities for retrofitted and new VFD installations in marine power applications.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133907682","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731921
M. G. Jahromi, G. Mirzaeva, S. Mitchell
This paper proposes a new design procedure for a bidirectional LCL converter which has a potential to be applied in mobile mine equipment. This type of a converter employs two DC/AC insulated-gate bipolar transistor-based (IGBT) converters and a passive LCL filter instead of a traditional high frequency transformer. LCL filter design is based on both zero reactive power circulation and minimization of voltage across the capacitor. Switching losses are minimized by using soft switching operation. Lower capacitor voltage and related lower stepping ratio can be mitigated by choosing an appropriate switching frequency. The designed converter has attractive performance characteristics under DC faults. The design process and converter performance evaluation are carried out using EMTP-RV digital simulation for a 20-MW 24kV/1.2kV converter. The proposed converter design is experimentally validated by developing a 200-W 100V/20V prototype converter.
{"title":"Design of a high power low losses DC-DC converter for mining applications","authors":"M. G. Jahromi, G. Mirzaeva, S. Mitchell","doi":"10.1109/IAS.2016.7731921","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731921","url":null,"abstract":"This paper proposes a new design procedure for a bidirectional LCL converter which has a potential to be applied in mobile mine equipment. This type of a converter employs two DC/AC insulated-gate bipolar transistor-based (IGBT) converters and a passive LCL filter instead of a traditional high frequency transformer. LCL filter design is based on both zero reactive power circulation and minimization of voltage across the capacitor. Switching losses are minimized by using soft switching operation. Lower capacitor voltage and related lower stepping ratio can be mitigated by choosing an appropriate switching frequency. The designed converter has attractive performance characteristics under DC faults. The design process and converter performance evaluation are carried out using EMTP-RV digital simulation for a 20-MW 24kV/1.2kV converter. The proposed converter design is experimentally validated by developing a 200-W 100V/20V prototype converter.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128462049","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731856
Wenchao Xue, R. Madonski, Zhiqiang Gao, Yi Huang, Krzysztof Lakomy
Active Disturbance Rejection Control (ADRC) as a standalone motion solution has been adopted by companies such as Texas Instruments and Danfoss and made available on various proprietary industrial platforms. The idea of ADRC, however, can be integrated with the existing control technologies seamlessly, as shown in this paper. It is shown a modularized ADRC design for set-point tracking of motion control such that better uncertainty rejection can be implemented without any change in the existing proportional-derivative (PD) control with linear observer. We prove that certain integration of the observer's error can serve as an estimation for the “total disturbance” in low frequency range. This enables the estimation and cancellation of the “total disturbance” to be incorporated into the existing control loop. Also, a comparison between the methods with and without such “module” is discussed. The proposed ADRC is implemented and validated with experimental results for a 1-degree of freedom robotic manipulator, where desired set-point tracking performance in position control is achieved under unknown mass variations and sudden external disturbances.
{"title":"Add-on module of Active Disturbance Rejection for set-point tracking of motion control systems","authors":"Wenchao Xue, R. Madonski, Zhiqiang Gao, Yi Huang, Krzysztof Lakomy","doi":"10.1109/IAS.2016.7731856","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731856","url":null,"abstract":"Active Disturbance Rejection Control (ADRC) as a standalone motion solution has been adopted by companies such as Texas Instruments and Danfoss and made available on various proprietary industrial platforms. The idea of ADRC, however, can be integrated with the existing control technologies seamlessly, as shown in this paper. It is shown a modularized ADRC design for set-point tracking of motion control such that better uncertainty rejection can be implemented without any change in the existing proportional-derivative (PD) control with linear observer. We prove that certain integration of the observer's error can serve as an estimation for the “total disturbance” in low frequency range. This enables the estimation and cancellation of the “total disturbance” to be incorporated into the existing control loop. Also, a comparison between the methods with and without such “module” is discussed. The proposed ADRC is implemented and validated with experimental results for a 1-degree of freedom robotic manipulator, where desired set-point tracking performance in position control is achieved under unknown mass variations and sudden external disturbances.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"03 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130244498","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731895
José Marcos Alonso Alvarez, M. Perdigão, G. Z. Abdelmessih, M. Costa, Yijie Wang
This paper presents a design, simulation and evaluation procedure of a variable inductor (VI) for a recently proposed DC-grid LED driver. The design procedure is based on the use of SPICE behavioral modelling to implement the different elements of the equivalent reluctance model of the VI. Thus, the model merges both electrical and magnetic behavior of the VI, including magnetic and geometric features. The basic components of the model are presented in detail, making it possible their use in future designs of VI and other complex magnetic devices. Experimental results from both VI and LED driver prototypes are provided to compare with the simulation results. Obtained outcomes prove that the proposed design and modelling technique is an excellent way to verify theoretical designs and attain further insight about the operation of these complex magnetic devices.
{"title":"SPICE-aided design of a variable inductor in LED driver applications","authors":"José Marcos Alonso Alvarez, M. Perdigão, G. Z. Abdelmessih, M. Costa, Yijie Wang","doi":"10.1109/IAS.2016.7731895","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731895","url":null,"abstract":"This paper presents a design, simulation and evaluation procedure of a variable inductor (VI) for a recently proposed DC-grid LED driver. The design procedure is based on the use of SPICE behavioral modelling to implement the different elements of the equivalent reluctance model of the VI. Thus, the model merges both electrical and magnetic behavior of the VI, including magnetic and geometric features. The basic components of the model are presented in detail, making it possible their use in future designs of VI and other complex magnetic devices. Experimental results from both VI and LED driver prototypes are provided to compare with the simulation results. Obtained outcomes prove that the proposed design and modelling technique is an excellent way to verify theoretical designs and attain further insight about the operation of these complex magnetic devices.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130940137","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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