Pub Date : 2016-10-01DOI: 10.1109/IAS.2016.7731869
F. El-Sousy, K. Abuhasel
This paper proposes an adaptive nonlinear disturbance observer (ANDO) for identification and control of a two-axis motion control system driven by two permanent-magnet linear synchronous motors (PMLSMs) servo drives. The proposed control scheme incorporates a feedback linearization controller (FLC), a new double loop self-organizing recurrent wavelet neural network (DLSORWNN) controller, a robust controller and an ℋ∞ controller. First, a FLC is designed to stabilize the X-Y table system. Then, a NDO is designed to estimate the nonlinear lumped parameters uncertainties that include the external disturbances, cross-coupled interference and frictional force. However, the X-Y table performance is degraded by the NDO error due to parameter uncertainties. To improve the robustness, the ANDO is designed to attain this purpose. In addition, the robust controller is designed to recover the approximation error of the DLSORWNN while the ℋ∞ controller is specified such that the quadratic cost function is minimized and the worst case effect of NDO error must be attenuated below a desired attenuation level. The online adaptive control laws are derived using the Lyapunov stability analysis and ℋ∞ control theory, so that the stability of the ANDO can be guaranteed. The experimental results show the improvements in disturbance suppression and parameter uncertainties, which illustrate the superiority of the ANDO control scheme.
{"title":"Adaptive nonlinear disturbance observer using double loop self-organizing recurrent wavelet-neural-network for two-axis motion control system","authors":"F. El-Sousy, K. Abuhasel","doi":"10.1109/IAS.2016.7731869","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731869","url":null,"abstract":"This paper proposes an adaptive nonlinear disturbance observer (ANDO) for identification and control of a two-axis motion control system driven by two permanent-magnet linear synchronous motors (PMLSMs) servo drives. The proposed control scheme incorporates a feedback linearization controller (FLC), a new double loop self-organizing recurrent wavelet neural network (DLSORWNN) controller, a robust controller and an ℋ∞ controller. First, a FLC is designed to stabilize the X-Y table system. Then, a NDO is designed to estimate the nonlinear lumped parameters uncertainties that include the external disturbances, cross-coupled interference and frictional force. However, the X-Y table performance is degraded by the NDO error due to parameter uncertainties. To improve the robustness, the ANDO is designed to attain this purpose. In addition, the robust controller is designed to recover the approximation error of the DLSORWNN while the ℋ∞ controller is specified such that the quadratic cost function is minimized and the worst case effect of NDO error must be attenuated below a desired attenuation level. The online adaptive control laws are derived using the Lyapunov stability analysis and ℋ∞ control theory, so that the stability of the ANDO can be guaranteed. The experimental results show the improvements in disturbance suppression and parameter uncertainties, which illustrate the superiority of the ANDO control scheme.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"159 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":"124450133","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.2016.7731921
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.2016.7731851
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.2016.7731840
S. Rabbi, M. Little, M. Rahman
A line-start interior permanent magnet (LSIPM) motor is an induction-start synchronous motor. LSIPM motors are subjected to inherent hunting phenomena. Applications such as reciprocating pumps and compressors create periodic load torque variations; inducing hunting in the system. Hunting introduces torsional vibration in the motor drive system. This paper presents a novel technique using the stator current signature to detect hunting for LSIPM motors. Wavelet packet decomposition is applied to analyze the stator current signals for identifying the electrical signatures of hunting. Experimental investigations have been carried out for a 3-phase 4-pole 208V, 1HP LSIPM motor in order to validate the performance of the proposed method under various operating conditions. A 3-phase full bridge IGBT inverter drive is used to operate the motor at variable command frequencies. Based on experimental results, the proposed technique can successfully identify the hunting phenomenon without a vibration/position sensor. It can be applied for LSIPM motors operated by either fixed frequency direct supply or power electronics based variable speed drives.
{"title":"A novel technique for detection and analysis of hunting in line-start IPM motors using stator current signature","authors":"S. Rabbi, M. Little, M. Rahman","doi":"10.1109/IAS.2016.7731840","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731840","url":null,"abstract":"A line-start interior permanent magnet (LSIPM) motor is an induction-start synchronous motor. LSIPM motors are subjected to inherent hunting phenomena. Applications such as reciprocating pumps and compressors create periodic load torque variations; inducing hunting in the system. Hunting introduces torsional vibration in the motor drive system. This paper presents a novel technique using the stator current signature to detect hunting for LSIPM motors. Wavelet packet decomposition is applied to analyze the stator current signals for identifying the electrical signatures of hunting. Experimental investigations have been carried out for a 3-phase 4-pole 208V, 1HP LSIPM motor in order to validate the performance of the proposed method under various operating conditions. A 3-phase full bridge IGBT inverter drive is used to operate the motor at variable command frequencies. Based on experimental results, the proposed technique can successfully identify the hunting phenomenon without a vibration/position sensor. It can be applied for LSIPM motors operated by either fixed frequency direct supply or power electronics based variable speed drives.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"78 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":"124462226","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.2016.7731856
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.2016.7731818
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.2016.7731895
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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