human performance engineering design and analysis tools

... vs x and y, (b) Stress vs x and z, (c) Stress vs x and t, (d) Stress vs x and w, (e) Stress vs y and z, (f) Stress vs y and t, (g) Stress vs y and w, (h) Stress vs z and t, (i) Stress vs z and ... simulation and predicted RE mode 85 Figure 4 19 Surface plot ((a) DI versus a and b, (b) DI versus a and c, (c) DI versus a and d, (d) DI versus a and e, (e) DI versus b and c, (f) DI versus b and ... DI versus b and e, (h) DI versus c and d, (i) DI versus c and e, (k) DI versus d and e) 88 Figure 4 20 Surface plot ((a) ST versus a and b, (b) ST versus a and c, (c) ST versus a and d, (d) ST

Ngày tải lên: 27/05/2021, 22:41

... Trang 2Statistical Design and Analysisof Experiments Trang 3Statistical Design and Analysisof Experiments With Applications to Engineering and Science Second Edition Robert L ... Factors Having Two and Three Levels, 290 8.6 Analysis of Screening Experiments, 293 Exercises, 299 PART III Design and Analysis with Random Effects 309 9 Experiments in Randomized Block Designs 311 ... assumptions typ-ically made with both regression and analysis-of-variance models Analysis-of-covariance procedures are introduced, and the design and analysis needed for use in fitting response surfaces

Ngày tải lên: 20/04/2023, 20:53

... (2.12) where and are hysteresis and eddy loss fractions of the total core lossrespectively The following values are usually taken for these two fractions, and for cold rolled steel and for hot ... currents and powers are balanced if mutual impedances Z ry , Z yb and Z br are equal.These impedances are function of number of turns and disposition of windings,winding connections within a phase and ... scribed and mechanically scribed Laminations withlower thickness are manufactured and used to take advantage of lower eddylosses Currently the lowest thickness available is 0.23 mm, and the popularthickness

Ngày tải lên: 07/08/2014, 21:21

... 82and the corresponding expression for the leakage reactance X is a two winding transformer shown in figure 3.2 The constants a and b have the values of 0 and 1 for LV, 1 and 1 for gap, and 1 and ... non-standard winding configurations and asymmetrical/non-uniform ampere-turn distributions, which cannot be easily and accuratelyhandled by the classical method given in Section 3.1 The FEM analysis ... and 1 for gap, and 1 and 0 for HV respectively If D1, D g and D2 are the mean diameters and T1, T g and T2 are the radial depths of LV, gapand HV respectively, using equation 3.12 we get (3.17)

Ngày tải lên: 07/08/2014, 21:21

... +∞ inthe x and y directions, and from 0 to ∞ in the z direction Similar to Section 4.1, we assume that E and H vectors have components in only the x and y directions respectively, and that they ... notchosen properly Today’s designer faces challenges like higher loss capitalization and optimumperformance requirements In addition, there could be constraints on dimensionsand weight of the transformer ... electric charges in the present analysis of eddy currents in aconductor we get (4.10) To get the solution, the first-order differential equations 4.1 and 4.8 involving both H and E are combined to give

Ngày tải lên: 07/08/2014, 21:21

... designers to simulate thecomplex electromagnetic structure of transformers for control of stray loss andelimination of hot spots However, FEM analysis may require considerableamount of time and ... mild steel and aluminum. The intersection point (B) of the curves for stainless steel and aluminum occurs atabout 5 mm and the intersection point (C) of the curves for stainless steel and mildsteel ... electromagnetic analysis Thecomputed temperatures have been found to be in good agreement with thatobtained by measurements Thus, the method of combined 3-D electromagneticFEM analysis and thermal FEM analysis

Ngày tải lên: 07/08/2014, 21:21

... short circuit withstandcapability are enumerated Design parameters and manufacturing processes havepronounced effect on natural frequencies of a winding Design aspects of windingand clamping structures ... stresses anddisplacements produced by the short circuit forces The dynamic analysis,although quite complex, is certainly desirable which improves the understanding of the whole phenomenon and helps designers ... positive-sequence impedance is where Z 1HS and Z 1LS are positive-sequence system impedances, and Z 1H and Z 1L arepositive-sequence impedances of HV and LV windings respectively in the starequivalent

Ngày tải lên: 07/08/2014, 21:21

... calculation by FEM analysis Table 7.1 Capacitance calculation by analytical method and FEM analysis Trang 23The mutual inductance between two thin wire, coaxial coil loops (A and B)of radii R A and R B ... [15, 18,19] (7.56) where (7.57) and N A and N B are the turns in sections A and B respectively, whereas K(k) and E(k) are the complete elliptic integrals of the first and second kinds respectively ... terminalpotential and hence requires to be insulated from the winding and tank along itsheight As the voltage ratings and corresponding dielectric test levels increased,transformer designers found

Ngày tải lên: 07/08/2014, 21:21

... 1Insulation DesignInsulation design is one of the most important aspects of the transformer design It is the heart of transformer design, particularly in high voltage transformers Sounddesign practices, ... iscommonly used for the design of the insulation system of transformers Theapproach is used for both creepage withstand assessment and oil gap design.For estimating creepage withstand characteristics, ... categorized into major insulationand minor insulation The major insulation consists of insulation betweenwindings, between windings and limb/yoke, and between high voltage leads andground The minor insulation

Ngày tải lên: 07/08/2014, 21:21

... values of maximum oil and winding temperatures depend on the ambienttemperature, transformer design, loading conditions and cooling provided Thelimits for ambient temperature and the corresponding ... quitedifficult and hence designers mostly rely on empirical formulae 9.1.1 Conduction Almost all the types of transformers are either oil or gas filled, and heat flows fromthe core and windings ... as OFAF (Oil Forced and Air Forced) or FOA cooling There are basicallytwo types of pump designs: axial flow in-line type and radial flow type forcirculating oil against low and high frictional

Ngày tải lên: 07/08/2014, 21:21

... Different Types of Loads and Tests 10.2.1 Loads The transformer tank should be capable of withstanding the following loads: Lifting and jacking: The tank is designed to facilitate handling of the transformer. ... rails or pipes. Seismic and wind load: The transformer has to be designed for a specified seismic acceleration and wind load. Seismic and wind loads are very important design considerations for ... Design 393 Plain tank: The plain tank of rectangular shape is quite simple in construction. It is easy from design and manufacturing points of view since it facilitates standardization. The design

Ngày tải lên: 07/08/2014, 21:21

... conventional transformers The shape and placement of barriers and the width of the resulting oil ducts would have already beendecided by the requirements of AC design and the thermal considerations ... size and cost of the interphase transformer is reduced When the 12-pulse operation is obtainedthrough one primary winding (usually star connected) and two secondarywindings (one in star and other ... the windings may also have to be designed with a gap at the location facing the core gap Trang 7Because of possibilities of rectifier faults, special design and manufacturingprecautions are taken

Ngày tải lên: 07/08/2014, 21:21

... reduce The design of conductor paper insulation (conflict between dielectric design and thermal design), design of supporting structures (conflict between stray loss control and structural design), ... time, and hence the speed of design and manufacture of the transformers is the key issue Therefore, it should be ensured that the process of optimization does not lead to non-standard designs ... manufacturing instructions and drawings thereby reducing the engineering design time drastically The main benefit to a transformer designer, due to modern computers, is in the area of analysis The transformer

Ngày tải lên: 07/08/2014, 21:21

... Revised and Expanded, H.Lee Willis 24 Power System State Estimation: Theory and Implementation, Ali Abur and Antonio Gómez Expósito 25 Transformer Engineering: Design and Practice, S.V.Kulkarni and ... losses and related theory of eddy currents, short-circuit forces and withstand, part winding resonance phenomena, insulation design, and design aspects of transformers for rectifier, furnace and ... industry to analyze and minimize the stray losses in the windings and structural components The design and manufacturing practices and processes have significant impact on the performance parameters

Ngày tải lên: 07/08/2014, 21:21

... x) messages and 2r(s) + dT (s, x) ideal time units Prove both correctness and complexity Exercise 2.9.51 Show why choosing uniformly at random a site and then choosing uniformly at random an element ... G, and let e = (x, y) ∈ E be the link where no message is transmitted by A Now construct a new graph G from G by removing the edge e and adding a new node z and two new edges e1 = (x, z) and ... broadcast, wake-up, and traversal on the tree Broadcast will cost exactly n − messages, and the cost of wake-up and traversal will be twice that amount These costs are independent of m and thus not

Ngày tải lên: 12/08/2014, 16:21

... enters stage i + 1 (and thus both y and z are de-feated); it will prepare an election message for the candidates in both directions, say u and v, and will send it directly to y and to z As before, ... neighbor becomes captured, and the candidate enters the next stage and Trang 8ELECTION IN COMPLETE NETWORKS 175continues; otherwise, the candidate becomes passive The candidate that is successful ... have just designed is shown in Figures 3.43, 3.44, and 3.45 Let us analyze the cost of the protocol How many candidates there can be in stage i? As each of them has a territory of sizei and these

Ngày tải lên: 12/08/2014, 16:21

... Collaborative Engineering Design and Analysis • Computer Aided Engineering Design and Analysis Computer Aided Design (CAD), emerged in the early 1960s, relates to the use of computers to assist the design ... Commercial Tools for Collaborative Engineering Design 17 2.2.1 Tools Assisting Collaborative Design 17 2.2.2 Tools Supporting Real-time Collaborative Design 19 Research and ... collaborative design process By standardizing the various design activities, the authors integrated concurrent design and axiomatic design concepts in a unified and structure-oriented automatic design...

Ngày tải lên: 03/10/2015, 20:58

... resources and renewable energy resources Handle stochastic demand and respond to smart appliances Provide self-correction, reconfiguration, and restoration Handle randomness of loads and market ... demand for increased quality and reliable supply Managing and resolving unpredictable events and uncertainties in operations and planning more aggressively Smart Grid: Fundamentals of Design and ... vulnerability, and so on, caused by various contingencies However, the smart grid first depends upon identifying and researching key performance measures, designing and testing appropriate tools, and developing...

Ngày tải lên: 23/03/2014, 08:21

... Oils and Residua, Second Edition, Revised and Expanded, James G Speight 79 Reaction Kinetics and Reactor Design: Second Edition, Revised and Expanded, John B Butt 80 Regulatory Chemicals Handbook, ... Third Edition, Revised and Expanded, James G Speight 77 Synthetic Lubricants and High -Performance Functional Fluids, Second Edition: Revised and Expanded, Leslie R Rudnick and Ronald L Shubkin ... Engineering: Design and Economics, Harry Silla 97 Process Engineering Economics, James R Couper 98 Re -Engineering the Chemical Processing Plant: Process Intensification, Andrzej Stankiewicz and...

Ngày tải lên: 01/04/2014, 11:33

... M Pigott and Barbee W Tucker 40 Handbook of Vitamins: Second Edition, Revised and Expanded, edited by Lawrence J Machlin 41 Handbook of Cereal Science and Technology, Klaus J Lorenz and Karel ... Revised and Expanded, edited by Seppo Salminen and Atte von Wright 86 Handbook of Vegetable Science and Technology: Production, Composition, Storage, and Processing, edited by D K Salunkhe and S ... by Jeffrey M Farber and Ewen C D Todd 99 Handbook of Cereal Science and Technology: Second Edition, Revised and Expanded, edited by Karel Kulp and Joseph G Ponte, Jr 100 Food Analysis by HPLC:...

Ngày tải lên: 02/04/2014, 15:02