2012 IEEE Energy Conversion Congress and Exposition (ECCE)最新文献_第9页

Transient load sharing between inverters and synchronous generators in islanded microgrids 孤岛微电网逆变器与同步发电机的暂态负荷分担

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342533

A. Paquette, M. Reno, R. Harley, D. Divan

{"title":"Transient load sharing between inverters and synchronous generators in islanded microgrids","authors":"A. Paquette, M. Reno, R. Harley, D. Divan","doi":"10.1109/ECCE.2012.6342533","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342533","url":null,"abstract":"When inverters in voltage control mode are paired with synchronous generators they exhibit poor transient load sharing in islanded operation. The inverter initially picks up the majority of every load step, and the generator's output slowly increases until they reach their steady state load sharing given by droop settings. This excessive transient power output from the inverter constrains its rating compared to the largest anticipated load step, and could negatively impact battery life in battery energy storage inverters. This paper examines the transient load sharing characteristics between synchronous generators and inverters in voltage control, i.e. grid-supporting-grid-forming control, and investigates methods to improve it. An equivalent circuit is proposed to describe the initial power sharing ratio, and the effects of increased inverter droop slope and increased governor integral gain are investigated. An inverter control strategy of emulating a synchronous generator is shown to provide good transient load sharing. Validation is provided by simulation and experimental results for real and reactive loads.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82854256","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: 31

Thermal design considerations for 12kV SiC n-IGBT based 3L NPC converter 12kV SiC n-IGBT型3L NPC变换器的热设计考虑

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342445

G. Karimi-Moghaddam, R. Gould, S. Madhusoodhanan, K. Hatua, S. Bhattacharya, S. Leslie, S. Ryu, M. Das, A. Agarwal, D. Grider

引用次数: 12

28V bus solar array regulator based on converters with transformer and self-driven Synchronous Rectification 基于变压器变换器和自驱动同步整流的28V母线太阳能阵列稳压器

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342697

A. Fernández, H. Carbonnier, O. Mourra, F. Tonicello

引用次数: 1

Time optimal and loss minimizing deadbeat-direct torque and flux control for interior permanent magnet synchronous machines 时间优化和损耗最小化——内部永磁同步电机的直接转矩和磁通控制

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342396

Jae Suk Lee, Robert D. Lorenz, M. A. Valenzuela

{"title":"Time optimal and loss minimizing deadbeat-direct torque and flux control for interior permanent magnet synchronous machines","authors":"Jae Suk Lee, Robert D. Lorenz, M. A. Valenzuela","doi":"10.1109/ECCE.2012.6342396","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342396","url":null,"abstract":"This paper presents time optimal control of an interior permanent magnet synchronous machine (IPMSM) in voltage- and current- limited conditions using deadbeat-direct torque and flux control (DB-DTFC). A commanded air-gap torque and flux can be achieved by the end of each PWM period using DB-DTFC. However, it may take several PWM periods to achieve a desired torque that is physically infeasible in one step when operating near the voltage limit. The large torque command can be shaped as a feasible trajectory so that the deadbeat torque and flux is achieved for every sample time instant (switching period) along the trajectory. In this paper, the feasible trajectory is dynamically optimized to achieve a large torque command in the shortest time during voltage- and current-limited operation. Loss minimizing stator flux linkage is used during steady state operation to reduce computational complexity of the dynamic optimization and to operate the IPMSM at the loss minimizing condition. The voltage- and current-limited operation of IPMSM drives is evaluated in both simulation and experiment in this paper.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90996842","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

Impact of gate driver signal on static losses for a SiC switch built with Normally-Off JFETs and a Schottky diode 栅极驱动信号对正常关断jfet和肖特基二极管构成的SiC开关静态损耗的影响

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342636

X. Fonteneau, F. Morel, H. Morel, P. Lahaye, E. Rondon-Pinilla

引用次数: 4

Power management of photovoltaic and fuel cell hybrid system for a constant-power-demand DC supply bus using complementary energy dispatch 基于互补能量调度的恒功率-需求直流母线光伏与燃料电池混合系统的电源管理

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342213

G. Hsieh, Chengxin Su, Hung-I Hsieh

引用次数: 2

Matrix transformers for renewable energy integration 用于可再生能源集成的矩阵变压器

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342602

Jiyao Wang, Yehui Han

引用次数: 1

Fault diagnoses for the Dc filters of power electronic converters 电力电子变流器直流滤波器的故障诊断

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342451

T. Kamel, C. Diduch, Y. Bilestkiy, Liuchen Chang

引用次数: 6

Mitigation of harmonics of DFIGs in DC-microgrids 直流微电网DFIGs谐波的抑制

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342574

F. Wei, D. Vilathgamuwa, S. S. Choi

引用次数: 8

Dynamic modeling of double cage induction machines for diagnosis of rotor faults 双保持架感应电机转子故障诊断的动力学建模

2012 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2012-11-12 DOI: 10.1109/ECCE.2012.6342666

E. Lorenzani, A. Salati, C. Bianchini, F. Immovilli, A. Bellini, S. Lee, J. Yoo, C. Kwon

{"title":"Dynamic modeling of double cage induction machines for diagnosis of rotor faults","authors":"E. Lorenzani, A. Salati, C. Bianchini, F. Immovilli, A. Bellini, S. Lee, J. Yoo, C. Kwon","doi":"10.1109/ECCE.2012.6342666","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342666","url":null,"abstract":"Double cage induction motors are typically employed in applications that require high starting torque for frequent, loaded starts. This makes the starting (outer) cage susceptible to fatigue failure since it must withstand the large thermo-mechanical stress associated with the high starting current and long acceleration time. Conventional FFT-based spectrum analysis techniques are insensitive to outer cage faults due to the small outer cage current under steady state operation, and the fault indicators and thresholds applied to single cage rotors cannot be used. Therefore, there is a strong industrial need for research and development of analysis techniques and advanced fault detection algorithms for double cage machines. However, there are only a few publications that investigate double cage rotor faults. In this paper, a dynamic model for rotor cage faults in double cage motors, which is the first step towards double cage rotor fault research, is derived. A 7.5 Hp separate end ring fabricated copper double cage rotor is built for experimental verification of the proposed fault model (copper inner cage/brass outer cage). The tests performed under startup and steady state operation show that the proposed fault model can provide sufficient accuracy and can be used as the basis for interpretation of FFT results and development of advanced fault detection algorithms.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88004977","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