high power fiber lasers and amplifiers
genetic algorithm based optimal pwm in high power synchronous machines and regulation of observed modulation error
Ngày tải lên :
27/07/2014, 23:28
... nature, and it is classified as one type of random search techniques Various candidate solutions are tracked during the search procedure in the system, and the population evolves until a candidate ... Genetic Algorithm–Based Optimal PWM in High Power Synchronous Machines and Regulation of Observed Modulation Error algorithm and the identified parameters, di and qi 35 are shown in Figure ... Undeland TM, Robbins WP Power Electronics: Converters, Applications, and Design, 3rd edn Wiley: New York, 2003 Murphy JMD, Turnbull FG Power Electronic Control of AC Motors Pergamon Press: England,...
- 30
- 232
- 0
HIGH-POWER CONVERTERS AND AC DRIVES ppt
Ngày tải lên :
16/03/2014, 05:20
... application of the high- power converters in industry drives the semiconductor technology toward higher power ratings with improved reliability and reduced cost There are two major types of high- power switching ... (Eupec) 0 Figure 2.1-1 2.2 2.2.1 I (kA) Voltage and current ratings of high- power semiconductor devices HIGH- POWER SWITCHING DEVICES Diodes High- power diodes can be generally classified into two ... devices is compared High- Power Converters and ac Drives By Bin Wu © 2006 The Institute of Electrical and Electronics Engineers, Inc 17 c02.qxd 1/8/2006 18 7:12 AM Chapter Page 18 High- Power Semiconductor...
- 333
- 511
- 0
Báo cáo " Research, design and fabrication of a high-power combiner using Wilkinson bridge of L-band " pptx
Ngày tải lên :
22/03/2014, 11:20
... diagram of aWilkinson power divider [1] This is a such network that the lossless and resistive T-junction power dividers have no isolation between the outputs of port and port 3, and the lossless ... at all ports, and the resistive power divider is lossy The Wilkinson power divider has all ports matched and has isolation between output ports, but is lossy [1] The Wilkinson power divider is ... methods from the medium power modul and the small power modul (Figure 3) 0o 0o 200W 200W Fig The power combining use Wilkinson brigde Experiments result We have designed and fabricated the 200W...
- 5
- 374
- 0
Báo cáo hóa học: " Narrow ridge waveguide high power single mode 1.3-lm InAs/InGaAs ten-layer quantum dot lasers" pptx
Ngày tải lên :
22/06/2014, 18:20
... this QD laser structure Though both GS and first excited state (ES) transitions were observed, GS emissions remained dominant even at high excitation power and high temperature This indicates that ... QD lasers Compared with CW operation, power saturation and kinks in the output power characteristics are greatly reduced in pulsed mode, which is attributed to reduction in device heating High ... InAs QD lasers fabricated using PAO were able to deliver comparable, and in some cases better performance with near ideal external differential efficiency of 96% and extremely high output power...
- 5
- 131
- 0
High efficiency and digitally controlled AC DC converter with power factor correction and fast output voltage regulation
Ngày tải lên :
09/09/2015, 17:53
... good candidate of focus The power supplies of the other top energy consuming applications such as televisions and lighting that are of lower power ratings and the power supplies of higher power ... important to have high efficiency and power factor at light load in PFC for energy saving If the light load efficiency and light load power factor of PFC are improved, the overall efficiency and power factor ... load is improved and pushed above the light load power factor requirements of the energy saving programs The higher efficiency and power factor at light load in PFC provide a higher margin for...
- 240
- 599
- 0
Towards high energy and high power density lithium rich cathode materials for future lithium ion batteries exploring and understanding mechanisms and role of transformation
Ngày tải lên :
10/09/2015, 09:28
... SUMMARY Developing high- energy and high- power density cathode materials for next-generation lithium ion batteries (LIB) is important and urgent because of high demand of long lasting power sources, ... TOWARDS HIGH- ENERGY AND HIGH- POWER DENSITY LITHIUM-RICH CATHODE MATERIALS FOR FUTURE LITHIUM-ION BATTERIES: EXPLORING AND UNDERSTANDING MECHANISMS AND ROLE OF TRANSFORMATION ... is only 140 mAh·-1 which limits its application in high- energy, high- power demands g In addition, LiCoO2 also suffers from toxicity, high cost and safety issue Therefore, alternative layered structural...
- 223
- 457
- 0
Management of fiber physical effects in high speed optical communication and sensor systems
Ngày tải lên :
11/09/2015, 10:01
... 1.2 High- Speed Optical Transmission Systems Optical power (dBm) 20 Reflected power Output power -20 -40 -60 -20 -10 10 Input power (dBm) 20 Figure 1.2: Output signal power and reflected SBS power ... 1559.35 nm and 1559 nm respectively Pump power is 27-dBm and signal power coupled into the HNLF is -25-dBm 27 2.2 Experimental Results 35 pump power 25 dBm pump power 26 dBm pump power 27 dBm ... for 1-st and 3-rd order Gaussian pulses [1] 1.2 Output signal power and reflected SBS power as a function of input power 11 1.3 Optical spectra of pump and signals...
- 168
- 363
- 0
Optimal cost and allocation for UPFC using HRGAPSO to improve power system security and loadability
Ngày tải lên :
05/09/2013, 15:28
... where PGi and QGi : generator real and reactive power at i-th bus, respectively; PDi and QDi : load real and reactive power at i-th bus, respectively; Gij and Bij : transfer conductance and susceptance ... xi (τ )) + c * rand * ( p g (τ ) − xi (τ )) (30) where c1 and c are acceleration constants and rand and rand are uniformly distributed random r numbers in [0, 1] The term vi is limited to its bounds ... Ängquist, M Ghandhari and G Andersson, “Use of UPFC for optimal power flow control”, IEEE Transactions on Power Delivery, Vol 12, No 4, pp 1629-1634, October 1997 [8] K S Verma and H O Gupta,...
- 16
- 547
- 0
Fiber Connectivity and Cable Management
Ngày tải lên :
18/10/2013, 19:15
... patch cords, multifiber cable assemblies, and intrafacility fiber cable (IFC) to and from fiber splice enclosures, fiber distribution frames, and fiber optic terminal devices The FiberGuide system ... economical and flexible FL2000 series of fiber optic products is ideal for small fiber counts and can be used in moderate fiber count applications as well by combining various panels This leading fiber ... H R K Y Adapters only fiber softwall bundle fiber Maxi-Strip 12 fiber ribbon 12 fiber softwall bundle2 12 fiber Maxi-Strip Mounting Style3 A B C D E F 19" (48.26 cm) standard (19.6" [49.78 cm]...
- 34
- 329
- 0
Next Generation Frame High Density Fiber Solutions
Ngày tải lên :
27/10/2013, 00:15
... † WB 72 -fiber stranded WC 96 -fiber stranded VZ 144 -fiber stranded IFC Type Multimode (50/125 laser optimized to 300m riser) † WF 72 -fiber stranded WE 96 -fiber stranded WG 144 -fiber stranded Indoor/Outdoor ... Gigabit applications VT VW EN FL FM 72 -fiber stranded dielectric 96 -fiber ribbon dielectric 96 -fiber stranded dielectric 144 -fiber stranded dielectric 144 -fiber ribbon dielectric † Other cable ... Right K F J No pigtails 12 -fiber pigtail 12 -fiber stranded maxi-strip 12 -fiber ribbon 12 -fiber pigtail (50/125) 12 -fiber pigtail (50/125 laser optimized to 300m) 12 -fiber pigtail (50/125 laser...
- 12
- 308
- 0
Power transformers principles and application
Ngày tải lên :
31/12/2013, 22:33
... the currents Therefore, the real power, reactive power, and apparent power of the primary circuit are all equal to the real power, reactive power, and apparent power of the secondary circuit 1.13 ... generator and the distribution primary circuits.* This definition of power transformer in the IEEE standard appears under the * IEEE Std C57.12.80-1978 IEEE Standard Terminology for Power and Distribution ... audio, radio, instrument, and power This book deals exclusively with power transformer applications involving the transmission and distribution of electrical power Power transformers are used...
- 286
- 413
- 7
Tài liệu TrueNet® Fiber Plug-and-Play Solutions for Data Center Applications Engineered for Uptime™ doc
Ngày tải lên :
17/01/2014, 12:20
... reliability and demand design flexibility to easily accommodate frequent adds and changes to equipment Managing the thousands of cables that typically comprise a data center should always be a high ... includes plug -and- play MPO solutions for TrueNet Fiber products for placement in the main distribution area (MDA), backbone, and horizontal and equipment distribution areas (HDA and EDA) These ... maximizing system performance and uptime ADC’s TrueNet® Fiber plug -and- play solutions for data center applications are designed to address the reliability, scalability, and thermal needs of today’s...
- 8
- 436
- 1
Tài liệu Power System Modelling and Scripting doc
Ngày tải lên :
18/02/2014, 22:20
... 4.4 10.5 power power power power flow flow flow flow results: results: results: results: power supplies generator reactive powers bus voltages bus power injections ... loads, synchronous and induction machines, primary frequency and voltage regulators and power system stabilizers, dc devices, ac-dc devices, FACTS devices, and wind turbines and other distributed ... device index i in all variables and parameters Thus, vh and θh indicate the bus voltage magnitude and phase angle, respectively, while ph and qh indicate the active and power injections, respectively...
- 602
- 1.2K
- 3
Tài liệu Báo cáo khoa học: "A HARDWARE ALGORITHM FOR HIGH SPEED MORPHEME EXTRACTION AND ITS IMPLEMENTATION" pptx
Ngày tải lên :
21/02/2014, 20:20
... of various candidates For example, " ~ ~", one of the extracted morphemes, is composed of the 2nd candidate at the 1st position, the 1st candidate at the 2nd position and the 3rd candidate at ... corresponds to the candidate level Candidates on the same level form one stream For example, in Fig 6(a), the character at the 3rd position has three candidates: the 1st candidate is ' ~ ' , ... (a)-*(b), (b) *(c), (c) -*(d), (d) *(e), and so on S t e p and Step for P r o c e d u r e are implemented in each state for (a), (b), (c), (d), (e), and so on In state (a) for Fig 4, the index...
- 8
- 504
- 0
New Media Power: The Internet and Global Activism doc
Ngày tải lên :
06/03/2014, 21:20
... space, costs, and the very roles of information producers and consumers also enables the rapid adaptation and transformation of political organizations, and the creation of new sorts of power relationships ... vast and complex problems have escaped the regulatory grasp of governments and nations, and that these problems require scaling protest activities across great reaches of time and space; and c) ... national, and ideological) forms of social conflict and exclusion The important (and not to be underestimated) exceptions, of course, are threatened traditional and conservative groups (Christian and...
- 40
- 585
- 0
Biotechnology and Empire: The Global Power of Seeds and Science
Ngày tải lên :
13/03/2014, 21:59
... steps that clarified and firmed territorial boundaries, imposed common linguistic and educational standards, and produced shared categories to reason and rule with.6 On the other hand were strategies ... saw as standing in the way of reason, order, and progress In spite of these midcentury turmoils and disruptions, the alliance between biology and power has only grown more intimate and pervasive ... demarcations between the governors and the governed For both Anderson and Stoler, making empires is an active, creative, and dynamic process of ordering, centering on producing and, especially for Stoler,...
- 20
- 440
- 0