Advances in Power Electronic最新文献_第9页

Heat Transfer of DE-Series MOSFETs de系列mosfet的传热

Advances in Power Electronic Pub Date : 2011-06-28 DOI: 10.1155/2011/164286

A. Swart

引用次数: 1

Review and Simulation of Fixed and Adaptive Hysteresis Current Control Considering Switching Losses and High-Frequency Harmonics 考虑开关损耗和高频谐波的固定和自适应迟滞电流控制综述与仿真

Advances in Power Electronic Pub Date : 2011-06-28 DOI: 10.1155/2011/397872

H. Vahedi, A. Sheikholeslami, M. Bina, M. Vahedi

{"title":"Review and Simulation of Fixed and Adaptive Hysteresis Current Control Considering Switching Losses and High-Frequency Harmonics","authors":"H. Vahedi, A. Sheikholeslami, M. Bina, M. Vahedi","doi":"10.1155/2011/397872","DOIUrl":"https://doi.org/10.1155/2011/397872","url":null,"abstract":"Hysteresis Current Control (HCC) is widely used due to its simplicity in implementation, fast and accurate response. However, the main issue is its variable switching frequency which leads to extraswitching losses and injecting high-frequency harmonics into the system current. To solve this problem, adaptive hysteresis current control (AHCC) has been introduced which produces hysteresis bandwidth which instantaneously results in smoother and constant switching frequency. In this paper the instantaneous power theory is used to extract the harmonic components of system current. Then fixed-band hysteresis current control is explained. Because of fixed-band variable frequency disadvantages, the adaptive hysteresis current control is explained that leads to fixing the switching frequency and reducing the high-frequency components in source current waveform. Due to these advantages of AHCC, the switching frequency and switching losses will be diminished appropriately. Some simulations are done in MATLAB/Simulink. The Fourier Transform and THD results of source and load currents and the instantaneous switching frequency diagram are discussed to prove the efficiency of this method. The Fourier Transform and THD results of source and load currents are discussed to prove the validity of this method.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127039134","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: 47

Design of Robust Current Controller for Two-Level 12-Pulse VSC-based STATCOM 基于两电平12脉冲vsc的STATCOM鲁棒电流控制器设计

Advances in Power Electronic Pub Date : 2011-06-16 DOI: 10.1155/2011/912749

M. Janaki, R. Thirumalaivasan, N. Prabhu

{"title":"Design of Robust Current Controller for Two-Level 12-Pulse VSC-based STATCOM","authors":"M. Janaki, R. Thirumalaivasan, N. Prabhu","doi":"10.1155/2011/912749","DOIUrl":"https://doi.org/10.1155/2011/912749","url":null,"abstract":"The static synchronous compensator (STATCOM) is a shunt connected voltage source converter (VSC) based FACTS controller using GTOs employed for reactive power control. A typical application of a STATCOM is for voltage regulation at the midpoint of a long transmission line for the enhancement of power transfer capability and/or reactive power control at the load centre. The PI controller-based reactive current controller can cause oscillatory instability in inductive mode of operation of STATCOM and can be overcome by the nonlinear feedback controller. The transient response of the STATCOM depends on the controller parameters selected. This paper presents a systematic method for controller parameter optimization based on genetic algorithm (GA). The performance of the designed controller is evaluated by transient simulation. It is observed that the STATCOM with optimized controller parameters shows excellent transient response for the step change in the reactive current reference. While the eigenvalue analysis and controller design are based on D-Q model, the transient simulation is based on both D-Q and 3-phase models of STATCOM (which considers switching action of VSC).","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130728865","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

The Influence of Controller Parameters on the Quality of the Train Converter Current 控制器参数对列车变流器电流质量的影响

Advances in Power Electronic Pub Date : 2011-06-09 DOI: 10.1155/2011/832737

M. Brenna, F. Foiadelli, D. Zaninelli

引用次数: 1

A New Sensorless MRAS Based on Active Power Calculations for Rotor Position Estimation of a DFIG 基于有功功率计算的新型无传感器MRAS用于DFIG转子位置估计

Advances in Power Electronic Pub Date : 2011-05-23 DOI: 10.1155/2011/970364

G. Marques, D. Sousa

引用次数: 19

Investigation of SSR Characteristics of Hybrid Series Compensated Power System with SSSC 带SSSC混合串联补偿电力系统的SSR特性研究

Advances in Power Electronic Pub Date : 2011-05-22 DOI: 10.1155/2011/621818

R. Thirumalaivasan, M. Janaki, N. Prabhu

{"title":"Investigation of SSR Characteristics of Hybrid Series Compensated Power System with SSSC","authors":"R. Thirumalaivasan, M. Janaki, N. Prabhu","doi":"10.1155/2011/621818","DOIUrl":"https://doi.org/10.1155/2011/621818","url":null,"abstract":"The advent of series FACTS controllers, thyristor controlled series capacitor (TCSC) and static synchronous Series Compensator (SSSC) has made it possible not only for the fast control of power flow in a transmission line, but also for the mitigation of subsynchronous resonance (SSR) in the presence of fixed series capacitors. SSSC is an emerging controller and this paper presents SSR characteristics of a series compensated system with SSSC. The study system is adapted from IEEE first benchmark model (FBM). The active series compensation is provided by a three-level twenty four-pulse SSSC. The modeling and control details of a three level voltage source converter-(VSC)-based SSSC are discussed. The SSR characteristics of the combined system with constant reactive voltage control mode in SSSC has been investigated. It is shown that the constant reactive voltage control of SSSC has the effect of reducing the electrical resonance frequency, which detunes the SSR. The analysis of SSR with SSSC is carried out based on frequency domain method, eigenvalue analysis and transient simulation. While the eigenvalue and damping torque analysis are based on linearizing the D-Q model of SSSC, the transient simulation considers both D-Q and detailed three phase nonlinear system model using switching functions.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132736803","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

Flash FPGA-Based Numerical Pulse-Width Modulator 基于Flash fpga的数字脉宽调制器

Advances in Power Electronic Pub Date : 2011-04-04 DOI: 10.1155/2011/215376

Ricardo Arias, Hernán Mediote, H. Tacca

引用次数: 1

A Substrate Current Less Control Method for CMOS Integration of Power Bridges 一种用于功率桥CMOS集成的衬底小电流控制方法

Advances in Power Electronic Pub Date : 2010-09-23 DOI: 10.1155/2010/909612

J. Krupar, Heiko Hauswald, Ronny Naumann

引用次数: 0

A Loosely Coupled Planar Wireless Power Transfer System Supporting Multiple Receivers 支持多接收机的松耦合平面无线电力传输系统

Advances in Power Electronic Pub Date : 2010-06-01 DOI: 10.1155/2010/546529

Z. Low, J. Casanova, Jenshan Lin

引用次数: 17

One Clock-Cycle Response 0.5 m CMOS Dual-Mode ΣΔ DC-DC Bypass Boost Converter Stable over Wide ESRLC Variations 单时钟周期响应0.5 m CMOS双模ΣΔ DC-DC旁路升压变换器在宽ESRLC变化下稳定

Advances in Power Electronic Pub Date : 2010-05-11 DOI: 10.1155/2010/253508

N. Keskar, G. Rincón-Mora

{"title":"One Clock-Cycle Response 0.5 m CMOS Dual-Mode ΣΔ DC-DC Bypass Boost Converter Stable over Wide ESRLC Variations","authors":"N. Keskar, G. Rincón-Mora","doi":"10.1155/2010/253508","DOIUrl":"https://doi.org/10.1155/2010/253508","url":null,"abstract":"Power supplies in portable applications must not only conform and adapt to their highly integrated on-chip and in-package environments but also, more intrinsically, respond quickly to fast load dumps to achieve and maintain high accuracy. The frequency-compensation network, however, limits speed and regulation performance because it must cater to all combinations of filter capacitor 𝐶 𝑂 , inductor L, and 𝐶 𝑂 's equivalent series resistance \u0000 𝑅 E S R resulting from tolerance and modal design targets. As such, it must compensate the worst-case condition and therefore restrain the performance of all other possible scenarios, even if the likelihood of occurrence of the latter is considerably high and the former substantially low. Sigma-delta ( Σ Δ ) control, which addresses this issue in buck converters by easing its compensation requirements and offering one-cycle transient response, has not been able to simultaneously achieve high bandwidth, high accuracy, and wide 𝑅 E S R L C compliance in boost converters. This paper presents a dual-mode Σ Δ boost bypass converter, which by using a high-bandwidth bypass path only during transient load-dump events was experimentally 1.41 to 6 times faster than the state of the art in current-mode Σ Δ boost supplies, and this without any compromise in 𝑅 E S R L C compliance range (0–50 m Ω , 1–30 𝜇 H, and 1–350 𝜇 F).","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132045948","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