{"title":"Design and analysis of a current-mode controlled battery/ultracapacitor hybrid","authors":"Shengyi Liu, R. Dougal","doi":"10.1109/IAS.2004.1348556","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348556","url":null,"abstract":"This paper presents the design and analysis of a current-mode controlled battery/ultracapacitor hybrid operated with a pulsed power load. The system Ragone-type plot is constructed based on the steady-state analysis for power and efficiency design and optimization. The closed-loop control system is derived from a small-signal analysis for a compensator design to improve the steady-state accuracy and transient characteristics. The designed system allows the battery to be operated at a low-level constant current for a better cycle life, while the ultracapacitor, paralleled with the load, \"free-wheels\" a large current to enhance the power. The compensator is a simple proportional controller that can eliminate potential instabilities resulted from the high resistance mode of the battery.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115811039","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}
S. Musumeci, R. Pagano, A. Raciti, F. Frisina, M. Melito, M. Saggio
{"title":"Modeling and characterization of a merged PiN-Schottky diode with doping compensation of the drift region","authors":"S. Musumeci, R. Pagano, A. Raciti, F. Frisina, M. Melito, M. Saggio","doi":"10.1109/IAS.2004.1348572","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348572","url":null,"abstract":"In this paper standard-cell Schottky rectifiers along with silicon-based merged PiN Schottky (MPS) and PiN diodes, which are realized using a super junction technology, have been analyzed by conducting extensive device and mixed-mode simulations through two-dimensional finite-element grid. The main issues of concern with these devices such as the forward voltage-drop, the leakage characteristic and the reverse recovery are dealt with, by highlighting the superior performances exhibited by the MPS rectifier in respect to the PiN diodes. Basics on the used technology are also reported, by focusing on the high voltage capability obtainable along with the low forward voltage-drop during the on-state conduction. The reverse recovery behavior pertaining to the MPS diode has been analyzed by resorting to several simulations of the internal plasma dynamics.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134120439","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}
{"title":"Design and optimization of high torque, low ripple switched reluctance motor with flux barrier for direct drive","authors":"J. Hur, G. Kang, J. Lee, J.P. Hong, B.K. Lee","doi":"10.1109/IAS.2004.1348439","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348439","url":null,"abstract":"While switched reluctance motors (SRM) have good performances, such as high torque, high speed, and high reliability, SRM has serious disadvantage of large torque ripple. In order to reduce the torque ripple and improve the average torque of the motor, this paper proposes a new type of SRM with inserted flux barriers into the rotor. The proposed type SRM is simulated for various configurations of the flux barriers and a shape optimization of the barrier has been carried out additionally. The performances of proposed type of SRM were confirmed by finite element analysis and experimentation and advantages and limitations of using flux barriers in SRM design for high torque are discussed. From the analysis results, it must be noted that the proposed type has great advantage over the conventional type toward trend of higher torque per a volume. Calculated and experimental results are presented, to validate the inserting the flux barriers and the resulting improvements.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132809319","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}
A. Caiafa, A. Snezhko, J. Hudgins, E. Santi, R. Prozorov, P. Palmer
{"title":"Physics-based modeling of NPT and PT IGBTs at deep cryogenic temperatures","authors":"A. Caiafa, A. Snezhko, J. Hudgins, E. Santi, R. Prozorov, P. Palmer","doi":"10.1109/IAS.2004.1348831","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348831","url":null,"abstract":"Detailed experimental data taken for punch-through (PT) and nonpunch-through (NPT) insulated gate bipolar transistors (IGBTs) are presented. The test program covered IGBT devices rated for 100-600 A and 600-1200 V from different manufacturers. The turn off behavior of the IGBTs is examined over a temperature range of 4.2 to 295 K. Physical behavior at low junction temperatures is analyzed. The IGBTs are consequently modeled using the Palmer-Leturcq model, a physics-based model based on the Fourier expansion of the ambipolar diffusion equation.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131022129","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}
{"title":"Model conducted EMI emission of switching modules for converter system EMI characterization and prediction","authors":"Q. Liu, F. Wang, D. Boroyevich","doi":"10.1109/IAS.2004.1348717","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348717","url":null,"abstract":"This paper proposes a new frequency-domain electromagnetic interference (EMI) noise prediction method for switching power converters with variable operating conditions such as DC-AC converters. This work presents a practical and efficient approach that is based on an EMI noise Thevenin equivalent frequency-domain source model (TEFSM) developed at one switching period. The prediction methods for both differential-mode (DM) and common-mode (CM) noise are studied. The methodology is verified by simulations and experiments using a half-bridge converter. This approach can be applied to converters with different switching control schemes. Also it can be applied to a variety of converters, such as DC-DC converters and three-phase pulse-width modulation (PWM) inverters.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131244113","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}
{"title":"Modeling the electrical behavior of fluorescent lamps on the basis of a self-consistent collisional-radiative model","authors":"K. Loo, D. Stone, R. C. Tozer","doi":"10.1109/IAS.2004.1348691","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348691","url":null,"abstract":"Due to the highly complex nature of fluorescent lamp discharge, its electrical behavior and interaction with ballast can only be fully investigated and understood in the framework of a self-consistent model. Collisional-radiative modeling provides the capability to describe in details the microscopic reactions in the discharge on the basis of three groups of continuity equations: particle balance, electron energy and gas temperature. This paper discusses the formulation of these equations and later applies them to modeling the lamp's electrical behavior in a ballast environment. Prototypes of the conventional magnetic ballast and half-bridge LCC inverter ballast were constructed to verify the model accuracy. The self-consistency of the model has enabled the computer design of lamp ballast for any given lamp parameters, that is: lamp radius, wall temperature, buffer gas pressure, power supply voltage or current, frequency and power.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"244 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133587906","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}
A. Lebedev, E. Lomonova, Peter G. van, Leuven, Joris Steinberg, D. Laro
{"title":"Analysis and initial synthesis of a novel linear actuator with active magnetic suspension","authors":"A. Lebedev, E. Lomonova, Peter G. van, Leuven, Joris Steinberg, D. Laro","doi":"10.1109/IAS.2004.1348758","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348758","url":null,"abstract":"In this paper attention is given to the initial design and experimental verification of the novel IU-shaped electromechanical actuator as a part of six degrees of freedom (6-DoF) contactless sliding system. Such a synergetic system is reached by integration of electromagnetic and mechanical structures of magnetic bearing and linear electromechanical actuator. Initially the performance of the electromagnetic module is examined. An analytical investigation of decoupled forces, originated from permanent magnets and suspension coils as functions of rotor position and current values in the control coils, is performed. Numerical results (the FEM models-Maxwell 3D Ansoft Co.) are validated by static measurements. Initial geometry is modified to demonstrate the improvement of the actuator performance.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132180104","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}
{"title":"Conducted EMI characteristic and its implications to filter design in 3-phase diode front-end converters","authors":"W. Shen, F. Wang, D. Boroyevich","doi":"10.1109/IAS.2004.1348720","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348720","url":null,"abstract":"EMI filter is becoming an essential part for modern power converter products, contributing to significant cost and sizes. Effective EMI filter design involves the identification and separation of common-mode (CM) and differential-mode (DM) conducted noises of the converter. In this paper, the impact by the diode conduction patterns on the EMI characteristics of a three-phase diode front-end converter is analyzed. There are classical two-line CM and DM noises similar to single phase cases corresponding to the two diode conducting case, the \"mixed-mode\" CM noise corresponding to no diodes conducting cases, and the three-line CM and DM noise corresponding to commutation cases. Though the present filter design based on single-phase approach seems to be adequate as a worst-case design, a more generic approach considering all three conditions together may provide opportunities for filter design optimization.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132451423","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}
{"title":"A controlling method for charging photovoltaic generation power obtained by a MPPT control method to series connected ultraelectric double layer capacitors","authors":"N. Mutoh, Takayoshi Inoue","doi":"10.1109/IAS.2004.1348791","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348791","url":null,"abstract":"A photovoltaic (PV) generation system which can efficiently acquire the electric energy irrespective of the weather is described. The PV generation system is characterized by two controllers, namely, a maximum power point tracking (MPPT) controller which makes it possible to take the maximum power which solar arrays can generate at any time irrespective of the weather, and a controller which quickly charges the maximum power obtained by the MPPT control to series connected ultraelectric double layer capacitors (ultraEDLCs) while maintaining the electric capacity which solar arrays can generate at that time. The MPPT controller controls the output current of the solar arrays so that the output power converges on the maximum power in the prediction line previously determined based on the linearity between the maximum output power and the optimal current. The MPPT controller is characterized by having the ability to enlarge the controllable range of the output power to lower solar radiation in comparison with the conventional hill-climbing method. The charging controller controls the current and voltage so as to be charged at around the power generated at that time while supervising the maximum voltage and allowable temperature of each series connected EDLC, The combined control method makes it possible to charge with the maximum power generation from solar arrays into ultraEDLCs. Effectiveness of the methods is verified by simulations and experiments.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127865099","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}
{"title":"Current distribution in paralleled thyristors - a comparative analysis of 5 real cases in high current transformer - rectifiers","authors":"R. Fuentes","doi":"10.1109/IAS.2004.1348448","DOIUrl":"https://doi.org/10.1109/IAS.2004.1348448","url":null,"abstract":"It is very well known that in high current transformer-rectifiers it is necessary to connect several thyristors in parallel for each secondary phase. Current distribution between thyristors in parallel strongly depends on the symmetry of the mechanical structure of rectifier. The current in one thyristor not always is given by total current of secondary phase divided by the number of thyristors in parallel, as it is in ideal cases. In this paper a comparative analysis of 5 different real cases of current distribution is presented. This real cases correspond to 6 pulses controlled rectifiers measured indifferent copper plants. Finally conclusions and design recommendations are given.","PeriodicalId":131410,"journal":{"name":"Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115505410","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}