2010 IEEE Energy Conversion Congress and Exposition最新文献_第8页

A front-end converter with high reliability and high efficiency 一种高可靠性、高效率的前端变换器

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5618160

K. Mino, H. Matsumoto, Y. Nemoto, S. Fujita, D. Kawasaki, R. Yamada, N. Tawada

引用次数: 12

A non-intrusive winding heating method for induction motor using soft-starter for preventing moisture condensation 一种用于使用软启动器防止水汽凝结的感应电动机的非侵入式绕组加热方法

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5617811

Pinjia Zhang, Yi Du, T. Habetler, B. Lu

{"title":"A non-intrusive winding heating method for induction motor using soft-starter for preventing moisture condensation","authors":"Pinjia Zhang, Yi Du, T. Habetler, B. Lu","doi":"10.1109/ECCE.2010.5617811","DOIUrl":"https://doi.org/10.1109/ECCE.2010.5617811","url":null,"abstract":"Moisture condensation may cause degradation of key motor components when a motor is de-energized. To prevent moisture condensation, a motor's temperature must be maintained higher than the ambient temperature when de-energized. This paper proposes a non-intrusive motor heating technique using soft-starters. By controlling the operation of the solid-state switches in soft-starters, adjustable ac current can be injected into the three phases of the stator windings without inducing any output torque. The motor temperature can therefore be maintained at a desired temperature due to the heat dissipation during current injection. In addition, two motor temperature control approaches are proposed in this paper to minimize the required energy consumption for preventing moisture condensation. The proposed technique is experimentally validated on a 7.5-hp ODP (open drip proof) induction motor. The experimental results show that the average stator winding temperature can reaches 9° above the ambient temperature with acceptable current magnitudes. In addition, it is shown that the motor temperature rise can be controlled by adjusting the operation of the solid-state switches in soft-starters. The importance of the proposed technique lies in its non-invasive nature: the technique only uses the existing hardware of soft-starters; the motor's condition is not interrupted since no output torque is induced during the current injection. The proposed winding heating technique can be easily extended to other types of ac machines or inverter-fed applications.","PeriodicalId":161915,"journal":{"name":"2010 IEEE Energy Conversion Congress and Exposition","volume":"605 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115106963","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

Performance evaluation of a new hybrid-modulation scheme for high-frequency-ac-link inverter: Applications for PV, wind, fuel-cell, and DER/storage applications 一种新的高频交流逆变器混合调制方案的性能评估:在光伏、风能、燃料电池和DER/存储应用中的应用

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5617965

S. Mazumder, A. Rathore

{"title":"Performance evaluation of a new hybrid-modulation scheme for high-frequency-ac-link inverter: Applications for PV, wind, fuel-cell, and DER/storage applications","authors":"S. Mazumder, A. Rathore","doi":"10.1109/ECCE.2010.5617965","DOIUrl":"https://doi.org/10.1109/ECCE.2010.5617965","url":null,"abstract":"Advances in SiC (and upcoming GaN) based power semiconductor devices, high-permeability nanocrystalline high-frequency (HF) transformers, and advanced processing and sensing capabilities have paved the way for HF-ac-link (HFACL) based isolated inverter systems that have wide applications encompassing high-power (HP) renewable- and alternative-energy systems (e.g. photovoltaic, wind, fuel-cell energy systems), DG/DER applications, active filters, energy storage, and compact defense power-conversion modules. Unlike conventional Si-based low-frequency HP systems, the switches in these applications need to operate at frequencies 20–50 kHz instead of being limited by conventional HP devices (e.g. Si-based IGCTs, GTOs). Additionally, HFACL systems eliminate the intermediate dc-link filters, which are needed in fixed-dc-link (FDCL) approaches. However, one of the challenges of such HP and HF approaches is switching loss. In that regard, this paper demonstrates, under scaled-power condition, the efficacy of a recently-outlined and patented hybrid-modulation (HM) scheme, which can reduce the switching losses of the ac/ac converter of a HFACL inverter by up to 66%. This also leads to improved voltage utilization as compared to state-of-the-art space-vector-modulation (SVM) schemes and reduction in device current stress. We also demonstrate that, even though the HM based HFACL approach works without a dc-link capacitor, the output THD of the inverter is not worse than the SVM based FDCL inverter. The HM scheme is unlike all reported discontinuous-modulation (DM) schemes where the input to the final stage of the inverter is a dc and not a pulsating-dc; further, in the HM scheme, switches in 2 legs of the ac/ac converter do not change state in a 60° cycle and switches in any one leg do not change state for an overall 240°. In contrast, for a conventional DM scheme, at most switches of 1 leg of the ac/ac converter do not change stage in a 60° or 120° cycle.","PeriodicalId":161915,"journal":{"name":"2010 IEEE Energy Conversion Congress and Exposition","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116188291","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: 17

Control of an unbalanced stand-alone DFIG-based wind system using predictive current control method 基于预测电流控制方法的不平衡单机dfig风系统控制

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5617962

V. Phan, Hong‐Hee Lee

引用次数: 8

Novel high-speed, Lorentz-type, slotless self-bearing motor 新颖的高速，洛伦兹型，无槽自轴承电机

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5617798

T. Baumgartner, A. Looser, C. Zwyssig, J. Kolar

引用次数: 20

Rotor design of a high-speed Permanent Magnet Synchronous Machine rating 100,000 rpm at 10kW 高速永磁同步电机的转子设计，额定转速为100,000 rpm，功率为10kW

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5617800

B. Riemer, M. Lessmann, K. Hameyer

{"title":"Rotor design of a high-speed Permanent Magnet Synchronous Machine rating 100,000 rpm at 10kW","authors":"B. Riemer, M. Lessmann, K. Hameyer","doi":"10.1109/ECCE.2010.5617800","DOIUrl":"https://doi.org/10.1109/ECCE.2010.5617800","url":null,"abstract":"Rotors of electrical high speed machines are subject to high stress, limiting the rated power of the machines. This paper describes the design process of a high-speed rotor of a Permanent Magnet Synchronous Machine (PMSM) for a rated power of 10kW at 100,000 rpm. Therefore, at the initial design the impact of the rotor radius to critical parameters is analyzed analytically. In particular, critical parameters are mechanical stress due to high centrifugal forces and natural bending frequencies. Furthermore, air friction losses, heating the rotor and the stator additionally, are no longer negligible compared to conventional machines and must be considered in the design process. These mechanical attributes are controversial to the electromagnetic design, increasing the effective magnetic air gap, for example. Thus, investigations are performed to achieve sufficient mechanical strength without a significant reduction of air gap flux density or causing thermal problems. After initial design by means of analytical estimations, an optimization of rotor geometry and materials is performed by means of the finite element method (FEM).","PeriodicalId":161915,"journal":{"name":"2010 IEEE Energy Conversion Congress and Exposition","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116453568","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: 32

Seamless transfer strategy with outer current loop for three phase inverter in distributed generation 分布式发电中带外电流环的三相逆变器无缝传输策略

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5617704

Zeng Liu, Jinjun Liu

引用次数: 7

Estimation of internal junction temperature & thermal resistance of light-emitting diodes using external luminous flux measurements 利用外部光通量测量估算发光二极管的内部结温和热阻

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5618051

X. Tao, S.N. Li, S. Hui

引用次数: 8

On interaction between internal converter dynamics and current control of high-performance high-power AC motor drives with modular multilevel converters 基于模块化多电平变换器的高性能大功率交流电机驱动内部变换器动力学与电流控制的相互作用

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5618474

A. Antonopoulos, K. Ilves, Lenart Angquist, H. Nee

引用次数: 89

An AC/DC power conversion based on Series-connected Universal Link converter 基于串联通用链路转换器的交流/直流电源转换

2010 IEEE Energy Conversion Congress and Exposition Pub Date : 2010-11-01 DOI: 10.1109/ECCE.2010.5618208

Anno Yoo, Myoungho Kim, S. Sul

引用次数: 6