power quality and grid code issues in wind energy conversion system

... to wind power system The suggested conversion system using MERS for wind power converison is shown in Fig l(b) The concept can be further explained by the use of phasor diagrams, as shown in ... IGBTs In summary, the results indicate significant potential in reducing the needed power electronics ratings and cost when using the MERS solution Conclusion An electrical conversion system ... turbine generator by magnetic energy recovery switch IPEC-Niigata 2005, 2005 [2] T Takaku, S Igarashi, J Wiik, M Molinas, T Undeland, Y Uchida, and R Shimada Improved wind power conversion system...

Ngày tải lên: 15/10/2013, 16:11

... Collaborating Compromising Avoiding Accommodating Avoiding Accommodating Avoiding Accommodating Information systems 10 Competing Collaborating Compromising Public services Competing Collaborating Compromising ... Collaborating Compromising (Continued ) Business values, management and conflict Private services 67 Competing Collaborating Compromising Avoiding Accommodating Production and engineering Competing ... management in Singapore Gender Figure indicates the dominant modes of handling conflict The two predominant modes of handling conflict for both men and women were compromising and avoiding, although...

Ngày tải lên: 13/12/2013, 20:15

... on recent advanced topics in the wind engineering: (1) Analyzing, identifying and reconstructing the random surface pressure fields around some typical rectangular cylinders, moreover, important ... coordinate coordinate -5 -6 10 -1 10 -1 10 10 10 -4 10 coordinate coordinate coordinate coordinate -5 -6 10 10 10 10 P SD PSD PSD 10 10 -1 10 Principal coordinates 10 coordinate coordinate coordinate ... Simulating time series of the random turbulent wind fields acting on discrete deck nodes are going to be used as input data to predict the random response of structure in the time domain in next...

Ngày tải lên: 13/02/2014, 03:20

... within the collective Masculinity/Fem ininity Medium Femininity – To deal with a difficult or controversial request, indirect forms of influence are preferred by Asian managers to avoid losing ... equality principle is reflected in the motivation system In American value systems, great emphasis is placed on individual achievement, and they are expected to achieve success only by their individual ... accepted business conduct You can see that in some areas we absolutely thousands of miles apart in many ways More than finding great new insights about cross-cultural issues, I find it more about...

Ngày tải lên: 29/03/2014, 23:20

... by these studies Administrative and management personnel are increasingly involved in interventions aimed at improving EmOC quality, such as clinical audits, but they are not systematically considered ... et de Sante Publique 2000, 48:517-539 Mainz J: Defining and classifying clinical indicators for quality improvement International Journal for Quality in Health Care 2003, 15:523-530 http://www.human-resources-health.com/content/7/1/7 ... performance in greater depth, and particularly their executive competence, which is scarcely documented in the selected studies Bearing in mind, on the one hand, ethical and logistical constraints, and...

Ngày tải lên: 18/06/2014, 17:20

... Bullying and Emotional Abuse in the Workplace: International Perspectives in Research and Practice London, Taylor and Francis; 2003 17 Einarsen S, Skogstad A: Prevalence and risk of bullying and ... commitment in this age range, resulting in rise of stressful conditions and working difficulties The bullying behavior against a woman begins, in most cases, when she has just returned from maternity and/ or ... Work-related stress and bullying: gender differences and forensic medicine issues in the diagnostic procedure Journal of Occupational Medicine and Toxicology 2011 6:29 Competing interests The authors...

Ngày tải lên: 20/06/2014, 00:20

... traits in an intercross between Iberian and Landrace breeds [15] and interacting genomic regions for carcass composition traits and intramuscular fat content in F2 crosses between Pietrain and three ... (Duroc) being homozygous, P(qq) the probability of the other grandparental line (Pietrain) being homozygous and P(Qq) the probability of being heterozygous These equations imply unlinked interacting ... al [9] have investigated non-insulindependent diabetes in two backcross populations of mice i.e B6 and CAST crosses They have detected five interacting QTL in the B6 cross but none in the CAST...

Ngày tải lên: 14/08/2014, 13:21

... in its fourth principle, it states that objectivity and independence should be maintained by the auditor and that independence should be exercised both in fact and in appearance while providing ... designing a code of ethics acting as a guideline for auditors to maintain their independence, objectivity and UN biasness during their conduct The study is first limited to measuring the audit quality ... increasing the information asymmetry between the management and the shareholders allowing non GAAP reporting practices such as the earnings management practices, and becoming less motivated in...

Ngày tải lên: 06/01/2015, 19:43

... to be examined In addition to security, trust and privacy issues also raise many concerns: How we secure our data and applications being processed and run in other computing systems (Grids)? How ... been solved yet 3.2 Data Warehousing and Data Mining: Security and Privacy Issues In this section we discuss security for data warehouses (DWs), and data mining (DM) applications for security ... intervention to carry out tasks such as searching for complex documents, scheduling appointments, integrating disparate DBs and information systems, etc The basic components of semantic Web include...

Ngày tải lên: 13/08/2015, 10:01

... (constrained) efficient In turn, the systemic risk arising from herding is also (constrained) efficient in our model This is an interesting result since it is in contrast to the inefficiency that arises in ... Scharfstein and Stein (1990) and Rajan (1994), in some detail in Section Scharfstein and Stein’s sequential model of herding is quiet about the variation in herding behavior over the business cycle ... industries in which banks can invest, denoted as and Bank A (B) can lend to firms A1 and A2 (B1 and B2 ) in industries and 2, respectively If in Nash equilibrium banks choose to lend to firms in...

Ngày tải lên: 15/03/2014, 09:20

... value of information (VOI) have been confined in the single agent decision systems Information value involving multiple agents has been discussed in games They use mathematical inductions and theorems ... Chapter introduces related work involving graphical models and evaluation methods both in single agent decision system and multi-agent decision system Most of current work on VOI computation in single ... decision analyst and automated decision systems in gathering Chapter 1: Introduction information by weighing the importance and information relevance of each node The methods described in this work...

Ngày tải lên: 07/10/2015, 10:10

... resources indicates the human effort involved in designing and maintaining the automated machines The ranking assigned for human resources may be higher during manufacturing, installation and maintenance ... to increase once a market and demand are established 4.3 Sustainability of fuel handling processes Solid fuels arriving at the system require temporary storage, drying, crushing/milling and internal ... performance of drying and storage aspects of fuel handling since one affects the other These two processes affect the crushing and grinding operations which in turn affect the in- system material...

Ngày tải lên: 05/09/2013, 14:58

... declare that the thesis is my original work and it has been written by me in its entirety I have duly acknowledged all the sources of information which have been used in the thesis This thesis has ... information which have been used in the thesis This thesis has also not been submitted for any degree in any university previously _ Karthik Somasundaram 17 October 2012 à ...

Ngày tải lên: 09/09/2015, 17:54

... Quality and Power in the Supply Chain: What Industry Does for the Sake of Quality This Page Intentionally Left Blank Quality and Power in the Supply Chain: What Industry Does for ... of quality in an age of corporate takeovers and downsizing; the relativity of quality across cultures; the business of quality; the quality profession and its role in promoting various fads including ... Role of Power in Dictating Demands Beginning in the 1950s and continuing to this day, political scientists and economists such as Gunnar Myrdal, Albert Hirschman, John Freidmann, Samir Amin, Gunder...

Ngày tải lên: 17/03/2014, 20:21

... DFIG for Integration into Micro-grids 417 5.2 Transition from grid- connected mode to islanding operating mode and transition from islanding operating mode to grid- connected mode The initial steady ... Masada, E (2008).Design Methods and Integrated Control for Microgrid, Proceedings of Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century 2008 ... active and reactive power in the system and returns to its nominal value after some oscillations within less than 0.5 sec In Fig.19, the measured voltage at the point of common coupling (PCC) in...

Ngày tải lên: 19/06/2014, 21:20

... Civil and Environmental Engineering University of Windsor Part Aerodynamics and Environmental Loading of Wind Turbines Aerodynamics of Wind Turbines Emrah Kulunk New Mexico Institute of Mining and ... considerable challenge facing a growing industry Wind power is now advancing against a backdrop of energy grid evolution not seen since grids were instituted a century ago Wind will be integrated with ... Technology USA Introduction A wind turbine is a device that extracts kinetic energy from the wind and converts it into mechanical energy Therefore wind turbine power production depends on the interaction...

Ngày tải lên: 19/06/2014, 21:20

... must be a wind speed change from the upstream to the downstream in order to extract energy from the wind; in fact by braking it using a wind turbine If no change in the wind speed occurs, energy ... Fundamental and Advanced Topics in Wind Power Walker, J F., Jenkins, N., Wind Energy Technology,” John Wiley and Sons, 1997 Schmidt, J., Palz, W., “European Wind Energy Technology, State of the Art Wind ... curve) and the line defined by a constant TSR is the lowest This difference represents the power in the wind that is not captured by the wind turbine Frictional losses, finite wing size, and turbine...

Ngày tải lên: 19/06/2014, 21:20

... have the code for design wind speed and wind zoning systems As on today, Kuwait does not have a code for design wind speed Wind speed and its directions have been measured in many places in Kuwait ... devises for controlling the sand movements in desert areas, ship anchoring systems in ports and harbors, wind power plants on land and sea, chimneys etc Also normal and extreme wind data is required ... friends and colleagues that have helped me and the wind turbine industry to gain a higher level of engineering expertise within lightning protection of wind turbines References Madsen, S.F (2006) Interaction...

Ngày tải lên: 19/06/2014, 21:20

... Efficient Modelling ofFoundations Efficient Modelling of Wind Turbine Wind Turbine Foundations 2.2.2 Governing equations for wave propagation in a soil layer In the time domain, and in terms of Cartesian ... offshore wind turbines The ULS is typically design giving for the foundations of smaller, land-based wind turbines In the SLS and FLS the turbine may be regarded as fully fixed at the base, leading ... 5th Edition, Geneva, Switzerland Part Structural and Electromechanical Elements of Wind Power Conversion Efficient Modelling of Wind Turbine Foundations Lars Andersen and Johan Clausen Aalborg University,...

Ngày tải lên: 19/06/2014, 21:20