losses efficiency and power factor

... 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 of the ... light load efficiency and light load power factor in the front stage PFC to aid the overall efficiency and power factor improvement for desktop computers power supplies In Fig 1.6 and Fig 1.7, the light ... efficiency curve and a flatter power factor curve above the 80 PLUS and ENERGY STAR requirements These make it easier for the power supply in meeting the increasing efficiency and power factor requirements...

Ngày tải lên: 09/09/2015, 17:53

... reactive leading and lagging power source However, au maease of readive power c a w muease of voltampere power ofthe adive filter [I] F.Blaabjer& JKPedersen 'An Integrated High Power Fador AC-DC-AC ... compasator for non adive power' , IEE F'roc-Hec Power Appl Vo1.141, No.4, July 1994 Pages 207-21 [4] W.Konara, '"pas& m Demand for Drive Powez' Prw 6th 'm coaference on Power Eledronics and Mdion Control, ... operates with unity power fador The case of unity power f fador operation can be provided with low volt-ampere power o the adive filter The control diagram of the Systan is proposed and tested ?his...

Ngày tải lên: 03/01/2014, 19:45

... 2007) Later on, such activity was also expanded in the UK and USA as well Nuclear Power – Control, Reliability and Human Factors as in Germany, China and other countries (Barberree, 2003; Hans ... economic growth and increasing population, energy demands must be satisfied in a sustainable manner assuring inherent safety, efficiency and minimized environmental impact Nuclear power has long ... instrumentation and control, operation reliability, system aging and human-machine interfaces.The book opens with the section on instrumentation and control aspects of nuclear power The following sections and...

Ngày tải lên: 19/06/2014, 11:20

... Self-Monitoring and Fault-Tolerance, Technisches Messen, Vol 74, No.4, pp 176-184 26 Nuclear Power – Control, Reliability and Human Factors Werthschützky, R & Werner, R (2009) Sensor Self-Monitoring and ... international and national standards and guides contain the requirements to use diversity in safety-critical systems, first of all, in nuclear power plant (NPP) instrumentation and control systems ... version redundancy type and development 28 Nuclear Power – Control, Reliability and Human Factors of channel versions are fulfilled without thorough analysis of their independence and assessment of...

Ngày tải lên: 19/06/2014, 11:20

... detectors for nuclear power plants (Hashemian, 2009a) Nuclear Power Plant Instrumentation and Control 51 The control and safety of nuclear power plants depend above all on temperature and pressure (including ... benefits to the safety and economy of nuclear power plants and has been approved by the NRC, OLM use in nuclear power plants is fragmented and sporadic (Hashemian, 2009b; Electric Power Research Institute ... practices from military and commercial standards are endorsed to address electromagnetic emissions, EMI/RFI susceptibility, and power surge withstand capability The MIL-STD-461E standard contains test...

Ngày tải lên: 19/06/2014, 11:20

... cannot be achieved The phases of power operation include power ascension, steady state power and load following, and power reduction Under normal conditions, power operation can be relatively ... Autonomous Control for Space Nuclear Power Systems 107 system-level information and commands, and spacecraft-level status and demands The effective integration of data and information at each level ... aspects: higher operation frequencies and lower output power, which translates in very high data rates and 82 Nuclear Power – Control, Reliability and Human Factors very low electromagnetic interference...

Ngày tải lên: 19/06/2014, 11:20

... Nuclear Power – Control, Reliability and Human Factors supervisory control modules at each level within the hierarchy respond to goals and directions set in modules above it and to data and information ... control system, and status and demands between the SNPS control system and spacecraft or ground control The fault management and configuration management functionalities are interrelated and depend ... system state and diagnostic/prognostic information that are subsequently refined into status and indicator information On the command side, the transition from the top is demands to commands to control...

Ngày tải lên: 19/06/2014, 11:20

... measurement of dose rates, and for collecting air samples with aerosol filters and charcoal cartridges, and possibly for soil and biological samples, and for their immediate counting and spectrometric ... Denmark Estonia Finland France Former Yugoslav Republic of Macedonia (FYROM) Germany Greece Hungary Iceland Ireland Italy Latvia Lithuania Luxembourg Malta Netherlands Norway Poland Portugal Serbia ... Euratom Treaty and in terms of Article 13 and 14 of the Basic Safety Standards (EC, 1996) Chapter III of the Euratom Treaty deals with Health and Safety aspects of the development and growth of...

Ngày tải lên: 19/06/2014, 11:20

... Nuclear Power – Control, Reliability and Human Factors Will-be-set-by-IN-TECH proceeding: Actinides AMS at CIRCE and 236 U and Pu measurements of structural and environmental samples from in and ... Korean standard nuclear power plant, shown in Fig 1, carbon steel with stainless steel cladding is used for the hot leg pipe and the 190 Nuclear Power – Control, Reliability and Human Factors ... electrostatic analyzer, and hence the Origin and Detection of Actinides: WhereDetection of Actinides: Where dothe Accelerator Mass Spectrometry Technique? Origin and Do We Stand with we Stand with the Accelerator...

Ngày tải lên: 19/06/2014, 11:20

... displacement data pair and its each fitting curve for short and long crack extension of cold leg piping material 12 202 Nuclear Power – Control, Reliability and Human Factors 3.3 Combined analysis ... Nuclear Power – Control, Reliability and Human Factors Landes, J.D., Zhou, Z., Lee, K & Herrera.,R (1991) Normalization Method for Developing JR Curve with the LMN Function Journal of Testing and ... the interface between the hot and cold fluids and are shown in Figure 212 Fig Stratified Temperature Profiles [3] Nuclear Power – Control, Reliability and Human Factors Feed Water Line Cracking...

Ngày tải lên: 19/06/2014, 11:20

... 230 Nuclear Power – Control, Reliability and Human Factors multiplying each adjusted ΔRTNDT by its corresponding fluence factor, summing the products, and dividing by the sum of ... 236 Nuclear Power – Control, Reliability and Human Factors Westergaard, H.M (1939) Bearing Pressures and Cracks Journal of Applied Mechanics, Vol 6, pp 49-53 ASTM E399 - 09e2 Standard Test Method ... demonstrated in Figure and are used to characterize this steel and as a benchmark for comparison with high-alloyed steel 242 Nuclear Power – Control, Reliability and Human Factors -2 10 -3 10 I,...

Ngày tải lên: 19/06/2014, 11:20

... steel at ambient and elevated temperatures 280 Nuclear Power – Control, Reliability and Human Factors Fig.4 and Fig.5 shows the temperature dependences of impact fracture energy and shear fracture ... , Me and q0 , M0 are the pressure and moment values that individually bring the tube at the onset of yielding and exhaust its load bearing capacity b = D/2 and a = b − t are the external and internal ... numerical results (dots) For materials with low values of κ (aluminum and 270 Nuclear Power – Control, Reliability and Human Factors Will-be-set-by-IN-TECH 14 (a) Stainless steel (κ = 1106) (b)...

Ngày tải lên: 19/06/2014, 11:20

... 290 Nuclear Power – Control, Reliability and Human Factors Considering this scenario, it is important to pursue knowledge and competence to assess the impact of aging and degradation mechanisms ... laid down in the technical specifications and operating procedures 292 Nuclear Power – Control, Reliability and Human Factors In the operation of a nuclear power plant, the effectiveness of maintenance ... knowledge of the aging and degradation processes and the development of methods and guidelines for its management is important to the reliable and safe operation of nuclear power plants The management...

Ngày tải lên: 19/06/2014, 11:20

... categories: 1) individuallevel factors (team member attributes, personality, knowledge and skills), 2) team-level factors (structure and size) and 3) environmental-level factors (task characteristics, ... the 3MA and EMAT sensors were arranged within the hot cell and the electronic equipment (3MA and EMAT device) was outside These Charpy samples (base material and weld material) of Russian and western ... Saarland University, Saarbrücken Part Plant Operation and Human Factors 18 Human Aspects of NPP Operator Teamwork Márta Juhász and Juliánna Katalin Soós Budapest University of Technology and Economics,...

Ngày tải lên: 19/06/2014, 11:20

... making, increased attention and concentration, work overload, time pressure, permanent learning, and exams 352 Nuclear Power – Control, Reliability and Human Factors Factor influencing well being ... Command Team Effectiveness: Model and Instrument for Assessment and Improvement, chapter 4: Review Of Team Effectiveness Models, NATO Research and Technology Organisation, The RTO Human Factors and ... utilize and develop their cognitive abilities Persons low in Openness to experience will easily bear a cognitive overload and avoid new and ambiguous situations that demand creativity and offer...

Ngày tải lên: 19/06/2014, 11:20

... (background factors, background and initiating factors, initiating factors, intermediate factors, immediate factors, near accident, and accident) and two management stages (measurable results and countermeasures) ... factors, immediate factors, accident and injury) for ensuring an easiness of analyses And finally, the IAD matrix consisted of the managerial and influencing factors, the fundamental causes and ... The Human Factors Approaches to Reduce Human Errors in Nuclear Power Plants Fig Hazard factors using the IAD diagram – case study 385 386 Nuclear Power – Control, Reliability and Human Factors...

Ngày tải lên: 19/06/2014, 11:20

... models and methods for assessing the risks, however, most of them use a special terminology and specify the same facts in a different way 414 Nuclear Power – Control, Reliability and Human Factors ... Positioning new barriers to fault and effect trees 415 416 Nuclear Power – Control, Reliability and Human Factors From the point of view of the inputs used and their character we distinguish: ... 418 Nuclear Power – Control, Reliability and Human Factors resources and type of the environment investigated as well as on the systematic approach used STATING THE GOAL, EXTENT AND OBJECT OF...

Ngày tải lên: 19/06/2014, 11:20

... 2007) Later on, such activity was also expanded in the UK and USA as well Nuclear Power – Control, Reliability and Human Factors as in Germany, China and other countries (Barberree, 2003; Hans ... economic growth and increasing population, energy demands must be satisfied in a sustainable manner assuring inherent safety, efficiency and minimized environmental impact Nuclear power has long ... instrumentation and control, operation reliability, system aging and human-machine interfaces.The book opens with the section on instrumentation and control aspects of nuclear power The following sections and...

Ngày tải lên: 26/06/2014, 23:20

... (kVA) P = Active power S = Apparent power Reactive energy and power factor 1.3 The power factor Definition of power factor The power factor of a load, which may be a single power- consuming item, ... switchgear and cables, etc as well as reducing power losses and voltage drop in an installation L L - Power factor correction and harmonic filtering Why to improve the power factor? Reduction of losses ... correction and harmonic filtering Reactive energy and power factor L - Power factor correction and harmonic filtering An example of power calculations (see Fig L4 ) Type of circuit Apparent power...

Ngày tải lên: 06/07/2014, 20:21

... (Kettinger and Lee, 1995); GFI = 0.740, TLI = 0.775, CFI = 0.796 (Segar and Grover, 1993; Chin and Todd, 1995) and RMESA = 0.085 (Taylor, Sharland, Cronin and Bullard, 1993; Tho and Trang, 2008) and ... explored factor include 08 components/factors including: (1) Economic efficiency of farmers, (2) The commitment and reliance, (3) The sharing of benefits and risks, (4) management skills and business ... investigating the factors that affect the efficency of the cooperation and the last part is the general information about the interviewees The Current Situation and the factors affecting the efficiency...

Ngày tải lên: 13/08/2015, 10:01