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A Multiphase Structure Applied in VRs for Portable Applications 一种用于便携式vr的多相结构
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802841
J. Vilchis, C. Aguilar, J. Arau
{"title":"A Multiphase Structure Applied in VRs for Portable Applications","authors":"J. Vilchis, C. Aguilar, J. Arau","doi":"10.1109/APEC.2009.4802841","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802841","url":null,"abstract":"Nowadays, portable applications are very important in telecommunications, business and entertainment markets. Handheld devices like Ultra Mobile PCs, cell phones, PDAs and Mobile Internet Devices are battery-dependant. Synchronous buck converter (SBC) is extensively used as voltage regulator (VR) in mobile devices; however, at very light-load operation, the converter efficiency is severely reduced. That condition is normal in these converters, but in battery operated systems, it becomes critical. In this paper, a VR converter, which is based on a multiphase structure, is presented. Proposed converter has three load-dependant operation modes and MOSFET parameter optimization is used. A study about the influence of the discontinuity period in discontinuous conduction mode operation and some efficiency-based comparisons among operation modes are presented; besides, the basic concept as well as the analysis and simulation of the proposed VR are presented.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115555414","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}
引用次数: 2
A Novel Optimized Snubber with Time-Varying Capacitor for Synchronous Rectification, Analysis and Implementation 一种新型时变电容同步整流优化缓冲器、分析与实现
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802631
Wei Zhang, Wei Chen, W. Yao, Zheng-yu Lu
{"title":"A Novel Optimized Snubber with Time-Varying Capacitor for Synchronous Rectification, Analysis and Implementation","authors":"Wei Zhang, Wei Chen, W. Yao, Zheng-yu Lu","doi":"10.1109/APEC.2009.4802631","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802631","url":null,"abstract":"This paper begins by illustrating the issue of switch stresses on synchronous rectifiers (SRs) which happens during the hot plug-in and plug-out operation turn on and off moment of the synchronous rectification in isolated non-regulated Dc-Dc converters, such as the single stage unregulated bus converter. Next, full analysis of the working principle of this unfavorable phenomenon is presented theoretically and experimentally. For conquering this difficulty, a novel snubber with time varying capacitor is proposed and experimentally demonstrated with detailed designing considerations and experimental results. Besides, to dig deeply into the idea exhibited from this novel method, this paper also extends the application of the novel snubber and propose many other time-varying snubber cells based on the idea with even more flexible applications. Finally, experiment results are presented to verify this idea by the improvements shown on the prototype of a 1/4 brick bus converter, which generates 12V-300W output from 48V bus input voltage.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114275137","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}
引用次数: 6
3X DC-DC Multiplier/Divider for HEV Systems 用于混合动力系统的3X DC-DC倍增器/分压器
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802802
Wei Qian, F. Peng, M. Shen, L. Tolbert
{"title":"3X DC-DC Multiplier/Divider for HEV Systems","authors":"Wei Qian, F. Peng, M. Shen, L. Tolbert","doi":"10.1109/APEC.2009.4802802","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802802","url":null,"abstract":"This paper presents a bidirectional 3X dc-dc multiplier/divider that can interface the battery with the inverter dc bus for hybrid electric vehicle (HEV) traction drives. Compared with traditional multi-level dc-dc converter, this converter can have three output/input voltage ratios with smooth transition. The control method to limit the transient inrush current, as well as a novel regenerative clamping circuit for multi-level dc-dc converters is provided in this paper. By utilizing the parasitic inductance or the minimum inductance from an air core inductor, the size and weight of the converter can be significantly reduced. Its magnetic-less feature and high efficiency provide the potential of the high temperature operation with the future wide bandgap devices. Experimental results are given to verify the operating principle and the design concepts of this topology.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"304 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114655393","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}
引用次数: 28
Improved Energy Capture in Series String Photovoltaics via Smart Distributed Power Electronics 通过智能分布式电力电子技术改进串联光伏电池的能量捕获
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802770
L. Linares, R. Erickson, S. MacAlpine, M. Brandemuehl
{"title":"Improved Energy Capture in Series String Photovoltaics via Smart Distributed Power Electronics","authors":"L. Linares, R. Erickson, S. MacAlpine, M. Brandemuehl","doi":"10.1109/APEC.2009.4802770","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802770","url":null,"abstract":"This paper proposes an improved module integrated converter to increase energy capture in the photovoltaic (PV) series string. Prototypes for self-powered, high efficiency dc-dc converters that operate with autonomous control for tracking the maximum power of solar panels locally and on a fine scale are simulated, built and tested. The resulting module is a low-cost, reliable smart PV panel that operates independently of the geometry and complexity of the surrounding system. The controller maximizes energy capture by selection of one of three possible modes: buck, boost and pass-through. Autonomous controllers achieve noninteracting maximum power point tracking and a constant string voltage. The proposed module-integrated converters are verified in simulation. Experimental results show that the converter prototype achieves efficiencies of over 95% for most of its operating range. A 3-module PV series string was tested under mismatched solar irradiation conditions and increases of up to 38% power capture were measured.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114218393","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}
引用次数: 221
750 W High Efficiency and Soft-Switching Off-Line 12 V Converter 750w高效软开关12v离线转换器
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802864
B. Bucheru, I. Jitaru
{"title":"750 W High Efficiency and Soft-Switching Off-Line 12 V Converter","authors":"B. Bucheru, I. Jitaru","doi":"10.1109/APEC.2009.4802864","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802864","url":null,"abstract":"The paper presents an innovative off-line low profile converter design that delivers 750 W of power at 95%-96% efficiency for nominal input range, using variable frequency topology with high frequency zero voltage switching (ZVS) and zero current switching (ZCS) for primary switchers. Theoretical considerations and practical results are presented for high frequency and high voltage soft-switching. The goal of the design is to maintain a reasonable temperature rise of the multi-layer PCB board while delivering 750 W power in a reduced volume and low cost. The resulting product increases more than twice the power density compared to the standard two stages 400V to 12V power converters and outperforms other one stage solutions in a 125 × 70 mm2 footprint with only a 18 mm profile.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117092683","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}
引用次数: 0
TILAS: A Simple Analysis Tool for Estimating Power Losses in an IGBT-Diode Pair under Hysteresis Control in Three-Phase Inverters TILAS:一种估算三相逆变器中迟滞控制下igbt -二极管对功率损耗的简单分析工具
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802726
A. Bazzi, J. Kimball, K. Kepley, P. Krein
{"title":"TILAS: A Simple Analysis Tool for Estimating Power Losses in an IGBT-Diode Pair under Hysteresis Control in Three-Phase Inverters","authors":"A. Bazzi, J. Kimball, K. Kepley, P. Krein","doi":"10.1109/APEC.2009.4802726","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802726","url":null,"abstract":"Several techniques for analyzing and estimating power losses in insulated-gate bipolar transistors (IGBTs), diodes, MOSFETs, and other power electronics switching devices are known. Most of the approaches in the literature deal with periodic pulse width modulation (PWM) switching schemes. This paper presents a simple analysis tool to estimate these losses under aperiodic switching schemes, e.g. hysteresis. The tool aims to simplify such an analysis with two main measurements 4 the load current of a converter phase leg and the gate switching waveform of the upper IGBT of that phase. No model estimations, thermal analyses, or slow simulations are required. Consistency between results from the proposed tool and a commercially available tool designed by an IGBT manufacturer is shown. A periodic frequency is proposed to adapt available software used with periodic switching schemes to aperiodic switching schemes. Experimental tests from an inverter application are presented here.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116061644","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}
引用次数: 8
Transfer Time Suppressor with Series-Parallel Connection 串并联传输时间抑制器
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802884
M. Arias, M. Hernando, D. G. Lamar, M. Rodríguez, A. Fernández
{"title":"Transfer Time Suppressor with Series-Parallel Connection","authors":"M. Arias, M. Hernando, D. G. Lamar, M. Rodríguez, A. Fernández","doi":"10.1109/APEC.2009.4802884","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802884","url":null,"abstract":"A line-interactive UPS has a higher efficiency than double conversion topology. It also has lower cost and size. Nevertheless, the transfer time between modes is an important drawback which makes impossible for line-interactive UPS to be implemented in certain applications. During this transfer time, which the UPS needs to detect the grid disturbance and to establish the stored-energy mode of operation, the load is still connected to the grid and, hence, under the influence of the mentioned disturbance. As a consequence, eliminating this transfer time without incrementing the cost or size of the UPS would represent an important advantage and would widen the fields of application in which this topology could be used. This paper proposes a system which can eliminate the voltage transient which affects the load during the transfer time. It is based on the typical topology of Dynamic Voltage Restorers (DVRs), but it has been deeply modified in order to be suitable for this application. The amount of energy to be delivered by the system and the duration of the disturbance in a UPS output are conditions completely different from those a DVR has. A prototype has been built and experimental results have been obtained in order to validate the proposed system.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114995550","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}
引用次数: 0
A Novel 40KW ZVS-SVM Controlled Three-Phase Boost PFC Converter 一种新型40KW ZVS-SVM控制三相升压PFC变换器
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802685
Rui Li, Ke Ma, Dehong Xu
{"title":"A Novel 40KW ZVS-SVM Controlled Three-Phase Boost PFC Converter","authors":"Rui Li, Ke Ma, Dehong Xu","doi":"10.1109/APEC.2009.4802685","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802685","url":null,"abstract":"The ZVS-SVM controlled three-phase boost rectifier can realize ZVS operation for all switching devices. In this paper, the operation principal and design guideline are described in detail. The soft switching restriction is analyzed in particular. The experimental results of a 40kW hardware prototype are presented to show the superiority of the topology and the reduction on loss.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124682448","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}
引用次数: 2
A Comparative Study of the Control Type ZVT PWM Dual Switch Forward Converters: Analysis, Summary and Topology Extensions 控制型ZVT PWM双开关正激变换器的比较研究:分析、总结和拓扑扩展
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802849
Wei Chen, Zheng-yu Lu, Shaoshi Ye
{"title":"A Comparative Study of the Control Type ZVT PWM Dual Switch Forward Converters: Analysis, Summary and Topology Extensions","authors":"Wei Chen, Zheng-yu Lu, Shaoshi Ye","doi":"10.1109/APEC.2009.4802849","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802849","url":null,"abstract":"In this paper, the general operation principles for the existing control type ZVT PWM dual switch forward converters which possess the same conversion ration are reviewed and their advantages and drawbacks are discussed in detail. Then the control type ZVS techniques of active-clamp and resonant reset are extended to the other dual switch forward converters by whether employing the input for resetting the transformer or not and a family of control type ZVT dual switch forward converters is derived and summarized detailedly. In the same way, the new families of control type ZVT PWM flyback and forward-flyback converters are brought forward. A new and improved control type ZVT PWM dual switch forward converter is proposed and its experimental results confirm the superior performance over the others in the same family.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121069505","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}
引用次数: 5
Analysis and Design of the Dual Edge Controller for the Fast Transient Voltage Regulator 快速暂态稳压器双边控制器的分析与设计
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI: 10.1109/APEC.2009.4802813
Kisun Lee, Paul Harriman, Hang Zou
{"title":"Analysis and Design of the Dual Edge Controller for the Fast Transient Voltage Regulator","authors":"Kisun Lee, Paul Harriman, Hang Zou","doi":"10.1109/APEC.2009.4802813","DOIUrl":"https://doi.org/10.1109/APEC.2009.4802813","url":null,"abstract":"Achieving faster dynamic response is one of the big challenges for the future microprocessor voltage regulators (VR). It is well known that the system bandwidth needs to be higher to get a faster dynamic response but the system bandwidth is usually limited by the phase shift near the switching frequency. In this paper, the existing theories for this phase shift and efforts to achieve a faster transient response are summarized. A higher bandwidth design using a dual edge controller is analyzed. The bandwidth is designed to be larger than one half of the switching frequency. The design is then verified with the hardware.","PeriodicalId":200366,"journal":{"name":"2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129324905","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}
引用次数: 11
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