B. Neammanee, K. Krajangpan, S. Sirisumrannukul, S. Chatrattana
This paper presents three alternative maxium peak power tracking-based control algorithms with stall regulation for optimal wind energy capture: torque reference-based MPPT algorithm, searching-based MPPT algorithm and fuzzy-based MPPT algorithm. The first algorithm uses a torque reference as a guideline for tracking. The second method searches an optimal operating point from the slope of the power-rotational speed curve. The last one achieves the control objective using a developed fuzzy logic rule base. These three algorithms were implemented on a low cost digital signal controller board and tested with a real-time wind turbine simulator. It is found from the experiment that the three algorithms can manage to obtain the maximum power for any input wind speeds but with different control performance in terms of power fluctuation, rotational speed fluctuation and tracking time.
{"title":"Maximum Peak Power Tracking-Based Control Algorithms with Stall Regulation for Optimal Wind Energy Capture","authors":"B. Neammanee, K. Krajangpan, S. Sirisumrannukul, S. Chatrattana","doi":"10.1541/IEEJIAS.128.411","DOIUrl":"https://doi.org/10.1541/IEEJIAS.128.411","url":null,"abstract":"This paper presents three alternative maxium peak power tracking-based control algorithms with stall regulation for optimal wind energy capture: torque reference-based MPPT algorithm, searching-based MPPT algorithm and fuzzy-based MPPT algorithm. The first algorithm uses a torque reference as a guideline for tracking. The second method searches an optimal operating point from the slope of the power-rotational speed curve. The last one achieves the control objective using a developed fuzzy logic rule base. These three algorithms were implemented on a low cost digital signal controller board and tested with a real-time wind turbine simulator. It is found from the experiment that the three algorithms can manage to obtain the maximum power for any input wind speeds but with different control performance in terms of power fluctuation, rotational speed fluctuation and tracking time.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126236192","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373001
C. Khun, V. Tarateeraseth, W. Khan-ngern, M. Kando
This paper presents improved and simplified methods to design passive EMI filter of the common-mode noise mitigation complied with CISPR 14 or EN 55014; conducted <700 W, Motors. The proposed design procedure of common-mode (CM) filter uses approximation function based on high-order Butterworth function to achieve not only the complied conducted noise but also the transfer function of the filter. This procedure is also based on the knowledge of the base-line of CM filter. The high frequency (HF) current probe is used to measure the conducted noises. Furthermore, this method makes possible a simplicity and fast design of the EMI filter with an arbitrary number of states. Design examples are given and the results are experimentally verified.
{"title":"Design Procedure of Common-mode Filter for Induction Motor Drive using Butterworth Function","authors":"C. Khun, V. Tarateeraseth, W. Khan-ngern, M. Kando","doi":"10.1109/PCCON.2007.373001","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373001","url":null,"abstract":"This paper presents improved and simplified methods to design passive EMI filter of the common-mode noise mitigation complied with CISPR 14 or EN 55014; conducted <700 W, Motors. The proposed design procedure of common-mode (CM) filter uses approximation function based on high-order Butterworth function to achieve not only the complied conducted noise but also the transfer function of the filter. This procedure is also based on the knowledge of the base-line of CM filter. The high frequency (HF) current probe is used to measure the conducted noises. Furthermore, this method makes possible a simplicity and fast design of the EMI filter with an arbitrary number of states. Design examples are given and the results are experimentally verified.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"C-32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126485438","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373152
A. G. Abo-Khalil, Dong-Choon Lee
This paper presents a new wind speed estimation method for a variable speed wind turbine system, where the theory of SVR (support vector regression) is applied. The turbine speed is controlled to capture the maximum power according to the optimal tip-speed ratio. The inputs of SVR estimator are the wind turbine power and the rotational speed. By off-line training, a specified function which relates the input with the output is obtained. Then, the wind speed is determined from this predicted off-line function and the instantaneous input. The simulation and experimental results have shown that the wind speed is estimated rapidly and accurately.
{"title":"SVR-based Wind Speed Estimation for Power Control of Wind Energy Generation System","authors":"A. G. Abo-Khalil, Dong-Choon Lee","doi":"10.1109/PCCON.2007.373152","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373152","url":null,"abstract":"This paper presents a new wind speed estimation method for a variable speed wind turbine system, where the theory of SVR (support vector regression) is applied. The turbine speed is controlled to capture the maximum power according to the optimal tip-speed ratio. The inputs of SVR estimator are the wind turbine power and the rotational speed. By off-line training, a specified function which relates the input with the output is obtained. Then, the wind speed is determined from this predicted off-line function and the instantaneous input. The simulation and experimental results have shown that the wind speed is estimated rapidly and accurately.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116145049","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373188
S. Kato, M. Cheng, H. Sumitani, R. Shimada
Flywheel energy storage systems are focused as uninterruptible power supplies (UPS) from the viewpoint of environmental friendliness and high durability performance. Using a low-speed, heavy, simple flywheel, and a low-cost squirrel-cage induction motor/generator, this paper proposes two applications as follows; 1) 11-kW voltage sag compensator using a capacitor self-excited induction generator without semiconductor converters; 2) UPS composed of the flywheel system and an engine generator. From some experimental results, an ideal voltage sag compensator and UPS are realized by the low-technology flywheel system.
{"title":"Semiconductor Power Converterless Voltage Sag Compensator and UPS Using a Flywheel Induction Motor and an Engine Generator","authors":"S. Kato, M. Cheng, H. Sumitani, R. Shimada","doi":"10.1109/PCCON.2007.373188","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373188","url":null,"abstract":"Flywheel energy storage systems are focused as uninterruptible power supplies (UPS) from the viewpoint of environmental friendliness and high durability performance. Using a low-speed, heavy, simple flywheel, and a low-cost squirrel-cage induction motor/generator, this paper proposes two applications as follows; 1) 11-kW voltage sag compensator using a capacitor self-excited induction generator without semiconductor converters; 2) UPS composed of the flywheel system and an engine generator. From some experimental results, an ideal voltage sag compensator and UPS are realized by the low-technology flywheel system.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120962063","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373119
Y. Hayashi, S. Kawasaki, T. Funabashi, Y. Okuno
A power and heat interchange system with fuel cells in collective housings is proposed. A solution method for determining optimal FC operation plan is proposed. From numerical simulations it is confirmed that fuel cells are effectively used by interchanging power and heat in a collective housing.
{"title":"Power and Heat Interchange System using Fuel Cells in Collective Housing","authors":"Y. Hayashi, S. Kawasaki, T. Funabashi, Y. Okuno","doi":"10.1109/PCCON.2007.373119","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373119","url":null,"abstract":"A power and heat interchange system with fuel cells in collective housings is proposed. A solution method for determining optimal FC operation plan is proposed. From numerical simulations it is confirmed that fuel cells are effectively used by interchanging power and heat in a collective housing.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124925520","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373092
T. Kojima, Y. Yamada, Y. Nishibe, K. Torii
This paper describes a novel RC compact thermal model which has the capability of representing thermal behavior of multi chip inverter module peculiar to HV. This RC compact thermal model can take into account lateral heat spreading within the modules and thermal interference among Si chips. The thermal model was validated in comparison of temperature transient responses among the results calculated using the proposed model and FEM. The electro-thermal coupling simulation using this RC compact thermal model offers reasonable accuracy for prediction of the Si chip temperature in HV inverter module.
{"title":"Novel RC Compact Thermal Model of HV Inverter Module for Electro-Thermal Coupling Simulation","authors":"T. Kojima, Y. Yamada, Y. Nishibe, K. Torii","doi":"10.1109/PCCON.2007.373092","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373092","url":null,"abstract":"This paper describes a novel RC compact thermal model which has the capability of representing thermal behavior of multi chip inverter module peculiar to HV. This RC compact thermal model can take into account lateral heat spreading within the modules and thermal interference among Si chips. The thermal model was validated in comparison of temperature transient responses among the results calculated using the proposed model and FEM. The electro-thermal coupling simulation using this RC compact thermal model offers reasonable accuracy for prediction of the Si chip temperature in HV inverter module.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114251679","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373176
K. Torii, T. Kojima, S. Sasaki, K. Hamada
This article describes an electro-thermal-mechanical coupled simulation newly developed for HV inverters, a modeling technique for fast and accurate calculation, simulation results, several applications and their verifications. The model is based on an electric circuit simulation technique and is obtained by modeling a motor, motor controller, power semiconductor devices and their driver circuits, interconnection, smoothing capacitors, and thermal circuits of power semiconductors including package structure. The current, voltage, and carrier frequency data computed from the control system model containing many dynamic characteristics of motor and vehicle specifications as driving conditions were inputted into the inverter circuit. Using this modeling technique, a five-second full-throttle simulation was completed in sixteen hours of computation time because of the model parameter determined by the effect of acceleration performance. This inverter system model enables simulations with various characteristics from all inverter components, such as the controller, the silicon chip, device packages, cooling structure and driver circuits. The error in the simulation is below five percent. This technique enables not only simulation of single components but also of the mutual impact among several components in an inverter system. As a result, the inverter design could be optimized, thus contributing to significant improvements in the high acceleration performance of HVs.
{"title":"Development of Inverter Simulation System and its Applications for Hybrid Vehicles","authors":"K. Torii, T. Kojima, S. Sasaki, K. Hamada","doi":"10.1109/PCCON.2007.373176","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373176","url":null,"abstract":"This article describes an electro-thermal-mechanical coupled simulation newly developed for HV inverters, a modeling technique for fast and accurate calculation, simulation results, several applications and their verifications. The model is based on an electric circuit simulation technique and is obtained by modeling a motor, motor controller, power semiconductor devices and their driver circuits, interconnection, smoothing capacitors, and thermal circuits of power semiconductors including package structure. The current, voltage, and carrier frequency data computed from the control system model containing many dynamic characteristics of motor and vehicle specifications as driving conditions were inputted into the inverter circuit. Using this modeling technique, a five-second full-throttle simulation was completed in sixteen hours of computation time because of the model parameter determined by the effect of acceleration performance. This inverter system model enables simulations with various characteristics from all inverter components, such as the controller, the silicon chip, device packages, cooling structure and driver circuits. The error in the simulation is below five percent. This technique enables not only simulation of single components but also of the mutual impact among several components in an inverter system. As a result, the inverter design could be optimized, thus contributing to significant improvements in the high acceleration performance of HVs.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127555600","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 : 2007-04-02DOI: 10.1109/PCCON.2007.372970
K. Ng, C. Moo, Y. Lin, Y. Hsieh, Y. Tsai
Experiments are carried out to demonstrate that the stored energy in lead-acid batteries can be efficiently exploited if the discharge periods are interleaved with the rest periods. The experimental results reveal that an intermittent discharging current with a longer rest time at a higher frequency can release more charge to the load. It is interesting to find a significant increase in releasable capacity by executing an intermittent discharging current at the deeper discharge state but a negative effect at the earlier stage of a discharging cycle. An efficient discharging profile with intermittent current is figured out based on the investigation results.
{"title":"Intermittent Discharging for Lead-Acid Batteries","authors":"K. Ng, C. Moo, Y. Lin, Y. Hsieh, Y. Tsai","doi":"10.1109/PCCON.2007.372970","DOIUrl":"https://doi.org/10.1109/PCCON.2007.372970","url":null,"abstract":"Experiments are carried out to demonstrate that the stored energy in lead-acid batteries can be efficiently exploited if the discharge periods are interleaved with the rest periods. The experimental results reveal that an intermittent discharging current with a longer rest time at a higher frequency can release more charge to the load. It is interesting to find a significant increase in releasable capacity by executing an intermittent discharging current at the deeper discharge state but a negative effect at the earlier stage of a discharging cycle. An efficient discharging profile with intermittent current is figured out based on the investigation results.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128030466","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373045
J.H. Park, I. Lee, B. Cho, Ju Kwang Lee, K. Whang
Recently, a mercury-free flat fluorescent lamp has been developed, which shows a high brightness (>5000 cd/m2) and high luminous efficacy (601 m/W). Additionally, it has a wide operating margin and stable driving condition with the aid of an auxiliary electrode. For driving the lamp, a narrow pulse power to maintain the glow discharge state is required. Since the conventional circuits are hard to obtain the lamp driving, new short-pulse high-voltage lamp ballast is developed. The proposed ballast uses coupled-inductor in order to enhance short pulse up to the lamp ignition level and obtain energy-recovery action, as well. The operation principle and experimental results are included. The ballast is adequate for driving the flat lamp with high system efficiency and low cost.
{"title":"High Efficiency Inverter Systems for Driving Mercury-free Flat Fluorescent Lamps","authors":"J.H. Park, I. Lee, B. Cho, Ju Kwang Lee, K. Whang","doi":"10.1109/PCCON.2007.373045","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373045","url":null,"abstract":"Recently, a mercury-free flat fluorescent lamp has been developed, which shows a high brightness (>5000 cd/m2) and high luminous efficacy (601 m/W). Additionally, it has a wide operating margin and stable driving condition with the aid of an auxiliary electrode. For driving the lamp, a narrow pulse power to maintain the glow discharge state is required. Since the conventional circuits are hard to obtain the lamp driving, new short-pulse high-voltage lamp ballast is developed. The proposed ballast uses coupled-inductor in order to enhance short pulse up to the lamp ignition level and obtain energy-recovery action, as well. The operation principle and experimental results are included. The ballast is adequate for driving the flat lamp with high system efficiency and low cost.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122891311","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 : 2007-04-02DOI: 10.1109/PCCON.2007.373095
M. Ishiko, T. Kondo, M. Usui, H. Tadano
Power modules including IGBT (insulated gate bipolar transistor) are widely used in the applications of motor drivers. The design optimization of the modules associated with the device characteristics, the module structures and the cooling conditions has become a major issue with the increase of the current density and the demand of downsizing the modules. In this paper, we propose a compact calculation method of dynamic electrothermal behavior of IGBT PWM (pulse width modulation) inverter modules. The dynamic electro-thermal calculations are performed using familiar spreadsheet software. In this approach, the mathematical models of the temperature dependencies of the device losses and quasi one-dimensional difference equations of thermal conduction were used for the estimation of the temperature of the module. To narrow down a lot of device and module parameters, the proposed approach will be an effective tool in the initial stage of thermal design of the inverter modules.
{"title":"A Compact Calculation Method for Dynamic Electro-thermal Behavior of IGBTs in PWM Inverters","authors":"M. Ishiko, T. Kondo, M. Usui, H. Tadano","doi":"10.1109/PCCON.2007.373095","DOIUrl":"https://doi.org/10.1109/PCCON.2007.373095","url":null,"abstract":"Power modules including IGBT (insulated gate bipolar transistor) are widely used in the applications of motor drivers. The design optimization of the modules associated with the device characteristics, the module structures and the cooling conditions has become a major issue with the increase of the current density and the demand of downsizing the modules. In this paper, we propose a compact calculation method of dynamic electrothermal behavior of IGBT PWM (pulse width modulation) inverter modules. The dynamic electro-thermal calculations are performed using familiar spreadsheet software. In this approach, the mathematical models of the temperature dependencies of the device losses and quasi one-dimensional difference equations of thermal conduction were used for the estimation of the temperature of the module. To narrow down a lot of device and module parameters, the proposed approach will be an effective tool in the initial stage of thermal design of the inverter modules.","PeriodicalId":325362,"journal":{"name":"2007 Power Conversion Conference - Nagoya","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132374513","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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