power quality improvement using switch mode regulator

... Six Sigma deployment model - 77 The p values for finished goods after improvement - 83 The semi finished goods data after improvement - 84 The total goods after improvement - ... in the Kano quality model: An example of the stationery industry Total Quality Management & Business Excellence, 20(2), 153 - 170 Cheng, J L (2008) Implementing Six Sigma via TQM improvement: ... matter the plant size, quality management systems measure up Plant Engineering, 61, 25-26 Mast, J D (2003) Quality Improvement from the Viewpoint of Statistical Method Quality and Reliability

Ngày tải lên: 07/08/2017, 11:32

... ElectronicS Small Switch Mode Power Supplies Modification Secrets This small switch mode power supplies modification worked superb It eliminates your headache in solving many different types of power supplies ... time in troubleshooting the power supplies Problems like no power, low power, too high power, power shut down, intermittent power problem and etc can be solved by using the method that I’m going ... Small Switch Mode Power Supplies Modification Secrets Brought to you by Jestine Yong SmallSwitchModePowerSuppliesModificationSecrets ImagineX ElectronicS

Ngày tải lên: 17/12/2019, 11:16

... Administration1 Title: QUALITY IMPROVEMENT OF STYROFOAM SHELLS BY USING DMAIC PROCESS AT LONG HUEI VIETNAM2 Thesis assignment (requirements for content and data):- Identify the quality problems of ... batches; Using dehumidifiers However, after conducting an effort-and-effect analysis, the improvement using dehumidifiers was removed due to its low effect and high effort After a process improvement ... implementing improvement 6 69Table 4 10 Financial savings from the improvement project 71Table 4 11 Control plan 71Table 5 1 Effectiveness measure of the improvement project 75Trang 14QC Quality

Ngày tải lên: 12/04/2024, 10:02

... POWER QUALITY HARMONICS ANALYSIS AND REAL MEASUREMENTS DATA Edited by Gregorio Romero Rey and Luisa Martinez Muneta Power Quality Harmonics Analysis ... Terziyski Chapter 5 Thermal Analysis of Power Semiconductor Converters 131 Adrian Plesca Part 3 Harmonic Distortion 151 Chapter 6 Improve Power Quality with High Power UPQC 153 Qing Fu, Guilong ... Ensuring optimal power quality after a good design and devices means productivity, efficiency, competitiveness and profitability. Nevertheless, nobody can assure the optimal power quality when

Ngày tải lên: 19/06/2014, 08:20

... harmonic component using the 14-state model 1 Electric Power Systems Harmonics - Identification and Measurements 25 Fig 15 Kalman gain for x1 and x2 using the 14-state model 1 Fig 16 ... exactly the same as those shown in Figure 23 Fig 17 Kalman gain for x1 and x2 using the 14-state model 2 26 Power Quality Harmonics Analysis and Real Measurements Data Fig 18 The ... waveforms, respectively 24 Power Quality Harmonics Analysis and Real Measurements Data 4.1 Testing the kalman filter algorithm The two Kalman filter models described in the preceding

Ngày tải lên: 19/06/2014, 08:20

... next section, waveform harmonics will be modeled as a linear fuzzy model. 7.2 Modeling of harmonics as a fuzzy model A voltage or current waveform in a power system beside the fundamental one ... linear fuzzy model and harmonic waveform modeling is presented in the next section. 7.1 Fuzzy function and fuzzy linear modeling The fuzzy sets were first introduced by Zadeh [20]. Modeling fuzzy ... Group on Power System Harmonics, Power System Harmonics: An Overview,” IEEE Trans on Power Apparatus and Systems, Vol PAS-102, No 8, pp 245 5- 246 0, August 1983 Electric Power Systems

Ngày tải lên: 19/06/2014, 08:20

... Measurement Data for Assessing Power Quality Disturbances Alexandre Brandao Nassif Hydro One Inc.,Toronto, ON, Canada 1. Introduction Power quality assessment is a power engineering field that ... data, the quality of such has become a very sensitive issue in power quality. An imperative action is to always employ high-resolution recording equipment in any instance of power quality analysis. ... the power density spectrum. Power Quality Harmonics Analysis and Real Measurements Data 72 This relationship can be understood as a transfer function. The concept of transfer function using

Ngày tải lên: 19/06/2014, 08:20

... is one of the significant parameters of power quality in power system Numerous problems related to voltage and current harmonic effects for contemporary power systems are commonly observed nowadays ... low rated power, intended to supply only measuring inputs 90 Power Quality Harmonics Analysis and Real Measurements Data of metering apparatus or protection relays extensively used in power system ... account in order to achieve desired final relatively high accuracy required for power quality monitoring systems Circuit modelling of voltage transformers Classical voltage transformer (VT) is a two

Ngày tải lên: 19/06/2014, 08:20

... depicting point at the main mode of the converter operation. Fig. 4. Waveforms of the voltages and currents at the main operation mode of the converter Power Quality Harmonics Analysis ... natural switching on of the controllable switches at zero voltage (ZVS) is fulfilled if the equivalent snubber capacitor С S always manages to recharge from +U d to –U d or backwards. At modes, ... transistors in the inverter. This mode is the main operation mode of the converter. It is observed at comparatively small values of the load resistor R 0 . At the second mode the commutation in the

Ngày tải lên: 19/06/2014, 08:20

... develop a 3D model of a power thyristor as main component part from power semiconductor converters The starting point is the power balance equation... Thermal Analysis of Power Semiconductor ... applications, the power semiconductor device is a part of a power converter (rectifier or inverter). Hence, the thermal stresses for the power semiconductor device depend on the structure of the power ... conditions of some typical power rectifiers are presented in section 3. In the next section, the 3D thermal modelling and simulations of power device as main component of power converters are described.

Ngày tải lên: 19/06/2014, 08:20

... electronic loads. Switch mode devices have a capacitive power factor between 55 and 93 percent (Allexperts), which can cause the increase of reactive power and power loss. The power loss in an ... simulating the power system behaviour. Conclusion and discussion are presented in section 6. 2. Modelling of switch mode devices This section studies the general specifications of switch mode devices. ... present a novel stochastic modelling approach for analysing the behaviour of the power system in the presence of switch mode devices. We also study the major KPI of the power system and study

Ngày tải lên: 19/06/2014, 08:20

... supply voltages causing power quality problems for other consumers connected at a point of common coupling [22]. Additionally, and somewhat ironically, the switched mode power supply itself ... extinguished at current zero, the power factor plays an important role on arc re-ignition. The figure 1. shows how arc voltage, power factor, input power; arc power and reactive power vary with arc current ... computer power quality monitoring has also moved towards investigating the effects that large concentrations of PCs can have on other utility customers. Personal computing impacts on power quality

Ngày tải lên: 19/06/2014, 08:20

... “Electrical Power Systems Quality? ??, New York: McGraw-Hill, 1996. [6] Task force on Harmonics Modeling and Simulation, "The modeling and simulation of propagation of harmonics in electric power ... to identify the sources of power quality deterioration. The most important parameters which affect power quality are harmonics, voltage instability and reactive power burden (Arrillaga et al., ... Line) of the furnace transformer, using the CA8334 three-phase power quality analyzer. CA8334 gave an instantaneous image of the main characteristics of power quality for the analyzed induction

Ngày tải lên: 19/06/2014, 08:20

... Preface IX Part 1 Power Quality Monitoring, Classification, Measurements, and Analysis 1 Chapter 1 Power Quality Monitoring 3 Kazem Mazlumi Chapter 2 Wavelet and PCA to Power Quality Disturbance ... to measure power and power quality indexes based on the instant power theory under non sinusoidal conditions is presented. X Preface Chapter 4 deals with the application of power quality monitoring ... arranged in two sections. Section one covers power quality monitoring, classification, and analysis aspects. Power quality enhancement, reactive power compensation and voltage sag mitigation

Ngày tải lên: 19/06/2014, 11:20

... detection method for power quality applications,” IEEE Transactions on Power Delivery, vol 17, no 1, pp 161– 172, 2002 [6] D G Ece and O N Gerek, Power quality event detection using joint 2-D-wavelet ... Transactions on Power Delivery, vol 19, no 3, pp 1419–1425, 2004 [8] T K Abdel-Galil, E F El-Saadany, and M M A Salama, Power quality event detection using Adaline,” Electric Power Systems Research, ... on Power Delivery, vol 19, no 2, pp 497–504, 2004 [4] M Karimi, H Mokhtari, and M R Iravani, “Wavelet based on-line disturbance detection for power quality applications,” IEEE Transactions on Power...

Ngày tải lên: 22/06/2014, 20:20

... captured by the power quality monitors The oscillation frequency is indeed the new natural power system resonant frequency formed by the equivalent inductance and the capacitance of the switched capacitor ... for effectively determining the exact switching instant [14] For example, there exists a commercial power quality monitoring system equipped with singularity (switching) detection based on the wavelet ... in modern PQ monitoring systems since the conventional capacitor switching transient data is all it needs and the method is not computationally intensive METHOD VALIDATION USING IEEE TEST MODEL...

Ngày tải lên: 22/06/2014, 19:20

... the switch at its transition period, thereby reducing the switching losses In a power MOSFET, zero voltage switching is preferred as compared to zero current switching Therefore, the operating switching ... advanced power topologies, which reduce switching losses at higher frequencies CR VIN IMPROVEMENT TECHNIQUES To develop SMPS with high efficiency and high switching frequencies, and to achieve high power ... MOSFET can be reduced by using a good MOSFET, and switching losses can be reduced by using either a ZVS (zero voltage switching during turn ON transition), a ZCS (zero current switching during turn...

Ngày tải lên: 17/05/2015, 15:33

... = T SW EQUATION 31: T SW P Q1, switching, turnon = V DC I O, av, nom T At turn-off the switching loss can be calculated using Equation 32 EQUATION 32: P Q1, switching, turn – off = 1 = ∫ ... Continuous and Discontinuous modes The difference between the two modes is in the inductor current In Continuous mode it never goes to zero, whereas in Discontinuous mode, the falling inductor ... the dissipated power EQUATION 25: I Q, av = I O, av, nom D EQUATION 28: P Q1, static, T MOSFET Power Losses Computation Static Dissipation Figure 10 illustrates what occurs during switching There...

Ngày tải lên: 17/05/2015, 15:33

... The seafood supply chain quality improvement 117 6.1 Introduction 117 6.2 The intra-SFC’s quality improvement measures and feedback 118 6.2.1 The intra-SFC’s quality improvement implementation ... 6.2.2 Feedback about the SFC quality improvement implementation Process 125 6.3 Seafood chain quality improvement measures 127 6.3.1 Feedback about chain quality improvement of the SFC meeting ... that SFC is an element of the chain, so quality improvement measures focus on SFC (intra-SFC quality improvement measures) and its chain (chain quality improvement measures) The next chapter will...

Ngày tải lên: 23/04/2013, 09:34

... Health Care Delivery Models 23 i Annual Progress Report to Congress National Strategy for Quality Improvement in Health Care Executive Summary The National Strategy for Quality Improvement in Health ... and making quality care more affordable Annual Progress Report to Congress National Strategy for Quality Improvement in Health Care Introduction The National Strategy for Quality Improvement ... reducing quality- reporting burden on providers led http://www.cms.gov/Medicare /Quality- Initiatives-Patient-AssessmentInstruments/QualityMeasures/QualityMeasurementImpactReports.html http://www.qualityforum.org/WorkArea/linkit.aspx?LinkIdentifier=id&ItemID=69495...

Ngày tải lên: 18/02/2014, 15:20