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

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Double-input boost/Y-source DC-DC converter for renewable energy sources 用于可再生能源的双输入boost/ y源DC-DC变换器
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846020
Saman A. Gorji, M. Ektesabi, Jinchuan Zheng
{"title":"Double-input boost/Y-source DC-DC converter for renewable energy sources","authors":"Saman A. Gorji, M. Ektesabi, Jinchuan Zheng","doi":"10.1109/SPEC.2016.7846020","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846020","url":null,"abstract":"Applications of the multi-input converters are becoming popular due to their conformity to renewable energy systems. This paper proposes a new topology of double-input boost converters with continuous input current, which is intended to be used for renewable power sources. The topology is derived from two dc-dc converter configurations: boost dc-dc converter and Y-source dc-dc converter. In the proposed converter, the two inputs have the ability to supply the load simultaneously or individually. The operation states are inspected thoroughly and an appropriate switching scheme is proposed based on the features of each input source. Finally, Simulation results are presented to verify the performance of the proposed double-input converter.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"76 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":"127360805","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: 13
Experimental investigation of 6.78MHz metamaterials for efficiency enhancement of wireless power transfer system 6.78MHz超材料提高无线电力传输系统效率的实验研究
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846011
Yayun Dong, Wenwen Li, Weikun Cai, C. Yao, D. Ma, Houjun Tang
{"title":"Experimental investigation of 6.78MHz metamaterials for efficiency enhancement of wireless power transfer system","authors":"Yayun Dong, Wenwen Li, Weikun Cai, C. Yao, D. Ma, Houjun Tang","doi":"10.1109/SPEC.2016.7846011","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846011","url":null,"abstract":"In this paper, we propose a concise unit-cell design of magnetic metamaterial. The effective permeability of the unit cell is derived by S parameter method and can be flexibly adjusted to meet specific requirements. 6×6 planar metamaterial slabs are constructed by the proposed unit cells to verify their effects in a 6.78MHz wireless power transfer system. The effects of 1-slab and 2-slab metamaterials on efficiency enhancement are analyzed by both S parameter measurement and power experiment. The optimal position of the 1-slab metamaterial and the optimal gap between two slabs are acquired by analyzing the transmission and reflection coefficients of the system. Finally, we set up a medium-power wireless power transfer system to explicitly demonstrate the efficiency enhancement by lighting up a 15W light bulb.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"136 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":"133566009","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: 7
An optimal DC bus voltage control method to improve the junction temperature of IGBTs in low speed operations of traction applications 一种优化的直流母线电压控制方法，以改善牵引应用中低速运行的igbt结温
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846201
Xubin Wang, Xuemei Wang, Xun Yuan
{"title":"An optimal DC bus voltage control method to improve the junction temperature of IGBTs in low speed operations of traction applications","authors":"Xubin Wang, Xuemei Wang, Xun Yuan","doi":"10.1109/SPEC.2016.7846201","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846201","url":null,"abstract":"Traction drives frequently operate at large torque and low speed states, which results in large junction temperature fluctuations and high peak value of inverter power devices. Therefore, the reliability of IGBTs will decrease significantly without suitable thermal control. In order to reduce power losses and junction temperature in low speed operation, the main studies of this paper are as follows: Firstly, an electro-thermal-load model of the traction inverter is established to analyze the junction temperature in different load operating conditions. Then, a control method of minimizing the IGBT power losses by regulating DC bus voltage is proposed. The results show that power losses and junction temperature of IGBTs have been decreased effectively without degrading the system performance in low frequency operations. Simulink and IPOSIM simulations are also employed to verify the correctness of the proposed method.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"11 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":"130352346","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
Offset PWM in modular multilevel converters for stored arm energy reduction 模块化多电平变换器中的偏移PWM，用于降低存储臂能量
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846100
G. Konstantinou, H. Wickramasinghe, S. Ceballos, J. Pou
{"title":"Offset PWM in modular multilevel converters for stored arm energy reduction","authors":"G. Konstantinou, H. Wickramasinghe, S. Ceballos, J. Pou","doi":"10.1109/SPEC.2016.7846100","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846100","url":null,"abstract":"Modulation techniques for the modular multilevel converter consider that the total number of sub-modules in the phase-leg is, either instantaneously or on average, equal to N balancing the capacitor voltages to a constant reference. This paper proposes an offset PWM technique that utilises the total number of the SMs in the arms of the MMC, particularly under low modulation indices. The result is a reduction in the average voltage of the capacitor and consequently, the total energy stored in the converter. The proposed technique is investigated under open and closed-loop circulating current control and simulation and experimental results are provided to illustrate the operation of the converter.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"1 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":"130789914","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
Preliminary investigation of electromagnetic and thermal performance of closed stator switched reluctance machines 闭合定子开关磁阻电机的电磁和热性能初步研究
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846088
W. Shuai, Su Rong, T. K. Jet, V. Viswanathan, A. Gupta
{"title":"Preliminary investigation of electromagnetic and thermal performance of closed stator switched reluctance machines","authors":"W. Shuai, Su Rong, T. K. Jet, V. Viswanathan, A. Gupta","doi":"10.1109/SPEC.2016.7846088","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846088","url":null,"abstract":"This paper presents the preliminary investigation results of a novel closed stator slot structure in Switched Reluctance Machines (SRM) to form direct cooling channels inside the stator slots in electromagnetic and thermal aspects. The investigation starts by identifying the current challenges faced by various cooling arrangements for electric machines. Two sets of baseline SRMs, with and without the closed slot structure, are then obtained via the combined optimization process based on FEA and Genetic Algorithm (GA). Coupled simulation between Matlab/Simulink and FEA is conducted to obtain the transient electromagnetic characteristics of the target SRM under Average Torque Control (ATC) scheme. The incurred iron and copper loss are then fed to Lumped Parameter Circuit (LPC) for thermal investigations. The results show that in spite of the increased leakage flux due to the added flux bridges, the proposed closed stator slot structure can improve the thermal performance of SRM and allow for higher stator current densities without exceeding the winding insulation limits. As a result, the power level and power density of the studied SRM is still increased.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"48 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":"128142248","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
Loss distribution analysis of three-level active neutral-point-clamped (3L-ANPC) converter with different PWM strategies 采用不同PWM策略的三电平有源中性点箝位(3L-ANPC)变换器损耗分布分析
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846157
Gang Zhang, Yongheng Yang, F. Iannuzzo, Kai Li, F. Blaabjerg, Hongbing Xu
{"title":"Loss distribution analysis of three-level active neutral-point-clamped (3L-ANPC) converter with different PWM strategies","authors":"Gang Zhang, Yongheng Yang, F. Iannuzzo, Kai Li, F. Blaabjerg, Hongbing Xu","doi":"10.1109/SPEC.2016.7846157","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846157","url":null,"abstract":"The three-level (3L) Active Neutral-Point-Clamped (ANPC) topology has been introduced to resolve the uneven loss distribution issue in the classical 3L Neutral-Point-Clamped (NPC) topology. The Pulse-Width-Modulation (PWM) strategy is then an important means to fully explore the potential benefits of the 3L-ANPC topology. This paper presents a novel loss balancing modulation strategy — Splitting Switching Loss Distribution PWM (SSLD-PWM) strategy to achieve more even loss distribution in the 3L-ANPC converter. Basically, in the proposed PWM strategy, the switching-on losses and switching-off losses are separated in order to improve the loss distribution among the power devices. A comparison between the proposed strategy and other major PWM strategies for the loss distribution is also carried out in this paper. Benchmarking results show that the proposed strategy has effective and superior performance in contrast to the prior-art PWM strategies in terms of even power loss distribution.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"17 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":"134148382","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: 19
A comparative study on efficiency and leakage magnetic field of transfer coils with different structures in a magnetic resonant WPT system 磁谐振WPT系统中不同结构传递线圈的效率和漏磁场的比较研究
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846068
Jin Jia, H. Omori, Masahiro Tsuno, T. Morizane, N. Kimura, M. Nakaoka
{"title":"A comparative study on efficiency and leakage magnetic field of transfer coils with different structures in a magnetic resonant WPT system","authors":"Jin Jia, H. Omori, Masahiro Tsuno, T. Morizane, N. Kimura, M. Nakaoka","doi":"10.1109/SPEC.2016.7846068","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846068","url":null,"abstract":"This paper is mainly about the efficiency and leakage magnetic field of five types of power transfer coils with different structures in a magnetic resonant WPT system with a single-ended inverter. Five pairs of square coils have been formed, so as to compare the efficiency and magnetic field reducing effects by simulation.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"14 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":"134641665","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: 4
An analytical solution of switching angles for Selective Harmonic Elimination (SHE) in a cascaded seven level inverter 级联七电平逆变器选择性谐波消除开关角的解析解
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846158
S. Bhadra, D. Gregory, H. Patangia
{"title":"An analytical solution of switching angles for Selective Harmonic Elimination (SHE) in a cascaded seven level inverter","authors":"S. Bhadra, D. Gregory, H. Patangia","doi":"10.1109/SPEC.2016.7846158","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846158","url":null,"abstract":"Selective Harmonic Elimination (SHE) is an established technique to eliminate unwanted harmonics that causes aliasing effect in communication systems and affects power quality in electrical systems. In this paper, an analytical approach for SHE is proposed for harmonic elimination in a multilevel inverter. Traditionally, numerical methods like Newton Raphson Algorithm are opted to solve the transcendental SHE equations. The disadvantage in iterative computation is overhead in computational effort and the solution time can be problematic in real-time operation. Additionally, the numerical methods are sensitive to initial values and produce just one solution depending on the initial values. It doesn't provide insight into the possible solution sets. The closed-form equations generate the appropriate transition angles, single or multiples and the modulation ratio can be programmed into a microcontroller to vary the fundamental while eliminating the targeted harmonics. The approach has been illustrated to eliminate up to 7th harmonic in a seven level single phase inverter and up to 11th in a three phase system (no triplen harmonic elimination). Simulation results are included to verify theoretical formulation. A low voltage seven level inverter was built with a H-bridge and the experimental results verify the theoretical findings. Results include both single phase and triplen systems.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"1 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":"134393790","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
Modeling and advanced control of wireless power transfer system with Z-source inverter z源逆变器无线电力传输系统的建模与先进控制
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7845998
Wan Tianfeng, Liu Xin, T. Hou-jun, Dong Yayun, Yang Xi-jun
{"title":"Modeling and advanced control of wireless power transfer system with Z-source inverter","authors":"Wan Tianfeng, Liu Xin, T. Hou-jun, Dong Yayun, Yang Xi-jun","doi":"10.1109/SPEC.2016.7845998","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7845998","url":null,"abstract":"In many practical applications of wireless power transfer (WPT) system, high power transmission efficiency is required and has been widely studied as an important issue. This paper presents and analyzes a Series-Parallel compensated WPT system with a Z-source inverter network inserted. To obtain higher efficiency, asymmetrical voltage-cancellation (AVC) control is applied and the ZVS operation is achieved. The AVC control algorithm should also be modified to help Z-source inverter to realize voltage boosted and fully utilize the null state existed in the AVC control. On account of the ZVS operation, the power factor of the system decreases inevitably, but it decreases less in Series-Parallel compensated topology than in Series-Series compensated topology. To verify the feasibility of the proposed method, a small-signal model is fully analyzed, and a controller is designed to help to realize AVC control. Finally, a simulation model is established and the result agrees with the analysis.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"61 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":"134554076","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
A novel operating scheme of five-level hybrid inverters for medium voltage applications 一种适用于中压应用的五电平混合逆变器的新工作方案
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) Pub Date : 2016-12-01 DOI: 10.1109/SPEC.2016.7846200
Ngoc Dat Dao, Dong-Choon Lee
{"title":"A novel operating scheme of five-level hybrid inverters for medium voltage applications","authors":"Ngoc Dat Dao, Dong-Choon Lee","doi":"10.1109/SPEC.2016.7846200","DOIUrl":"https://doi.org/10.1109/SPEC.2016.7846200","url":null,"abstract":"In this paper, a new operating scheme for five-level hybrid flying-capacitor (5L-HFC) inverters is proposed, of which structure is derived from the conventional five-level active neutral-point-clamped (5L-ANPC) topology by splitting the DC-link into three capacitors in series. In this inverter, the lower number of switching devices is required, thus its cost is reduced considerably compared with the existing five-level inverter topologies. In addition, a balancing scheme of the DC-link and flying capacitor voltages is developed. Simulation and experiment results have verified the validity of the proposed topology.","PeriodicalId":403316,"journal":{"name":"2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)","volume":"49 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":"133907716","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
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