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2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)最新文献

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A vary mode control-based high-efficiency full-bridge LLC resonant converter operating in super wide input voltage range 一种在超宽输入电压范围下工作的基于变模控制的高效全桥LLC谐振变换器
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846047
Huipin Lin, Xiao-guang Jin, W. Yao, Zhengyu Lyu, Yan Deng, Xinnian Sun
{"title":"A vary mode control-based high-efficiency full-bridge LLC resonant converter operating in super wide input voltage range","authors":"Huipin Lin, Xiao-guang Jin, W. Yao, Zhengyu Lyu, Yan Deng, Xinnian Sun","doi":"10.1109/SPEC.2016.7846047","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846047","url":null,"abstract":"A new vary mode control strategy for LLC resonant converter is proposed, via which the converter circuit works in three different modes selected based on different input voltages, so that under different working conditions, circuit works in a mode that suit the specific condition best, which is conducive to operations in wider input voltage range and to improve operation efficiency amongst the full input voltage range. An experimental prototype is set, by which the effectiveness of the proposed mode control strategy is proved.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123068778","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
Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving LED驱动的基本电路理论考虑:电压源与电流源驱动
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846015
Zheng Dong, C. Tse, S. Hui
{"title":"Basic circuit theoretic considerations of LED driving: Voltage-source versus current-source driving","authors":"Zheng Dong, C. Tse, S. Hui","doi":"10.1109/SPEC.2016.7846015","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846015","url":null,"abstract":"Light-emitting-diodes (LEDs) are solid-state devices with specific v-i characteristics. In this paper we study the basic requirement of the driving circuits and discuss the proper approach to driving LEDs from the circuit theoretic viewpoint. We compare voltage source driving and current source driving, and discuss their relative advantages and constraints. We specifically introduce the use of duality principle in developing new current-source drivers which are mostly unknown but are theoretically more versatile compared to their conventional voltage-source counterparts. Although the study exploits very basic circuit theory, it is not always borne in mind or known by practitioners the impact of the choice of circuit topologies on the current and voltage ripples, range of duty cycle variation, sensitivity, and efficiency of LED drivers. This paper presents a systematic and comparative exposition of the circuit theory of driving LEDs, with experimental evidences supporting the major conclusions. Finally, we illustrate how these results can readily lead to an effective LED driver design.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121338055","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
Single-phase transformer based Z-source AC-AC converters 基于单相变压器的z源AC-AC变换器
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846040
Zeeshan Aleem, M. Hanif
{"title":"Single-phase transformer based Z-source AC-AC converters","authors":"Zeeshan Aleem, M. Hanif","doi":"10.1109/SPEC.2016.7846040","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846040","url":null,"abstract":"A family of single-phase transformer based Z-source ac-ac converters is proposed in this paper. The proposed converters has the main features which are buck-boost, maintaining, or reversing the phase angle, improved input profiles, continuous input current, shared ground between the input and output, and improved reliability. Moreover, it employs transformers in the impedance network, hence the required voltage gain can be achieved by adjusting the turns ratio. The gain can be tuned by either increasing or decreasing the turns ratio of the transformer depending on the configuration of the Z-source structure. The operation of each converter is presented in detail and simulations are performed to verify the working principles and their benefits.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128808443","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
Research on hybrid energy storage by super capacitor-battery and control strategy for intelligence micro-grid system 智能微电网超级电容-电池混合储能及控制策略研究
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846116
Wenzhou Liu, Xun Liu, Bo Du, Zhihon Jiang, H. Cui, Qiaoyun Gao, Yancheng Wei, Ning Li, D. Xi, Chang Liu
{"title":"Research on hybrid energy storage by super capacitor-battery and control strategy for intelligence micro-grid system","authors":"Wenzhou Liu, Xun Liu, Bo Du, Zhihon Jiang, H. Cui, Qiaoyun Gao, Yancheng Wei, Ning Li, D. Xi, Chang Liu","doi":"10.1109/SPEC.2016.7846116","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846116","url":null,"abstract":"Confronted with severe environment issues, large scale utilization and development of wind energy and solar energy that are regenerative, non-pollution, green and clean, the best way for power generation and grid synchronization of distributed energy is to develop intelligence micro-grid. Amongst micro-grid, batteries will be connected with super capacitors to form hybrid energy storage system. Batteries will stabilize the voltage of DC busbar to as to retain balance between demand and supply over busbar. Super capacitors will quickly provide high frequency power component needed for load variation so as to restrict the impact of abrupt load variation on DC busbar. Parameters should be designed based on DC system at substation. Simulation software will be used to simulate emergency load and abrupt load reduction under different capacitance levels so as to demonstrate The feasibility of Hybrid Energy Storage Systems.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114235484","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: 3
A low assembly cost coaxial magnetic gearbox 一种低装配成本的同轴磁齿轮箱
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846207
K. Uppalapati, J. Kadel, J. Wright, K. Li, W. Williams, J. Bird
{"title":"A low assembly cost coaxial magnetic gearbox","authors":"K. Uppalapati, J. Kadel, J. Wright, K. Li, W. Williams, J. Bird","doi":"10.1109/SPEC.2016.7846207","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846207","url":null,"abstract":"This paper presents the design investigation and experimental testing of a flux-focusing magnetic gearbox with a three piece laminated rotor structure. Each rotor is made of a single lamination stack held together via thin lamination bridges. It is calculated that mechanical bridges reduces the torque density from 156Nm/L to 139Nm/L (a reduction of 11%). The experimentally measured torque density is shown to be only 95Nm/L because the magnets were demagnetized during testing.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114615144","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: 9
Active source current filtering to minimize the DC-link capacitor in switched reluctance drives 有源电流滤波，以尽量减少直流电容在开关磁阻驱动器
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846034
A. Klein-Hessling, B. Burkhart, R. D. De Doncker
{"title":"Active source current filtering to minimize the DC-link capacitor in switched reluctance drives","authors":"A. Klein-Hessling, B. Burkhart, R. D. De Doncker","doi":"10.1109/SPEC.2016.7846034","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846034","url":null,"abstract":"Switched reluctance machines receive increased attention by the automotive industry because of their cost efficiency. However, the comparatively larger inverter is a disadvantage of this machine type. This paper evaluates the effects of the usage of a dc-dc converter to reduce the size of the dc-link capacitor by active filtering of the source current. The active filter is compared to a passive filter. Besides, the influence of a variable dc-link voltage level on the machine efficiency is investigated.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126052854","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: 14
Electrical design considerations for a 4 kW buck converter with normally-off GaN devices at a Dc-link voltage of 400 V 在直流链路电压为400 V时，采用常关GaN器件的4kw降压变换器的电气设计考虑
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846124
Philipp Schülting, Dominik Kubon, R. D. De Doncker
{"title":"Electrical design considerations for a 4 kW buck converter with normally-off GaN devices at a Dc-link voltage of 400 V","authors":"Philipp Schülting, Dominik Kubon, R. D. De Doncker","doi":"10.1109/SPEC.2016.7846124","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846124","url":null,"abstract":"GaN power semiconductor devices show promising properties to achieve high power densities in power converters for voltages in the range of 400 V. The utilization of high switching frequencies and high switching speeds are particularly challenging for filter design and the circuit layout. Within this paper, a comprehensive analysis of design considerations for a GaN based synchronous buck converter is presented to achieve a transferred power of 4 kW at a dc-link voltage of 400 V and a switching frequency of 400 kHz. This analysis comprises the evaluation of the high-frequency performance of dc-link capacitors and impacts of parasitics in the commutation cell.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"128 21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128028597","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
Coil optimization against misalignment for wireless power transfer 针对无线电力传输失调的线圈优化
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846159
J. Sampath, A. Alphones, D. M. Vilathgamuwa
{"title":"Coil optimization against misalignment for wireless power transfer","authors":"J. Sampath, A. Alphones, D. M. Vilathgamuwa","doi":"10.1109/SPEC.2016.7846159","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846159","url":null,"abstract":"The improvement of misalignment tolerance is a key challenge for the optimization of wireless power transfer (WPT) systems. WPT coil design plays an imperative role in improving the misalignment tolerance. However, misalignment tolerance needs to be considered along with the dynamics of the receiving coil. This paper presents a coil optimization method to improve misalignment tolerance according to the receiver positioning behavior. A novel figure-of-merit (FOM) is introduced by incorporating maximum efficiency and the probability of alignment (PA). A case study for parameter optimization of circular spiral coils is presented with the use of the proposed FOM.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126559646","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
Hybrid impedance network-based converter with high voltage gain and no commutation problem 基于混合阻抗网络的高电压增益变换器，无换流问题
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846055
A. Mostaan, Mohsen N. Soltani, Saman A. Gorji
{"title":"Hybrid impedance network-based converter with high voltage gain and no commutation problem","authors":"A. Mostaan, Mohsen N. Soltani, Saman A. Gorji","doi":"10.1109/SPEC.2016.7846055","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846055","url":null,"abstract":"In this paper, a new hybrid converter based of Z-source DC/DC converter with common ground is introduced. The proposed converter can supply ac and dc loads simultaneously or individually (stand-alone ac or dc loads). Also, the commutation problem of its counterpart has been solved in this topology. The proposed hybrid converter is analyzed mathematically and then validated by simulation in three different possible modes: only dc load in service, only ac load in service and both ac and dc loads in service.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122452018","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: 1
Comparative study of current control methods for a 5kW wireless EV charging system 5kW电动汽车无线充电系统电流控制方法比较研究
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846043
Fang Liu, Zhengming Zhao, Kainan Chen, Jintong Nie, Yiming Zhang, Liqiang Yuan
{"title":"Comparative study of current control methods for a 5kW wireless EV charging system","authors":"Fang Liu, Zhengming Zhao, Kainan Chen, Jintong Nie, Yiming Zhang, Liqiang Yuan","doi":"10.1109/SPEC.2016.7846043","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846043","url":null,"abstract":"In this paper, a 5kW wireless electric vehicles (EV) charger is introduced and modeled in time-frequency domain. Base on the function of the charging current, two current control methods are discussed. It is found that the DC-link voltage control can make the voltage source inverter (VSI) work under soft switching mode but the adjustable range of the charging current is limited. The phase shift control method has a wider adjustable range while it may lead to switching loss and EMI when the phase shift angle is less than 180°. A combined current control strategy is proposed to deal with the problem. Simulation and experiments verify the validity of the proposed strategy.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125219758","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: 3
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