Download Analysis, modeling and control of doubly-fed induction by Petersson Andreas PDF

By Petersson Andreas

ISBN-10: 9172916001

ISBN-13: 9789172916005

Show description

Read Online or Download Analysis, modeling and control of doubly-fed induction generators for wind turbines PDF

Best analysis books

Complex Functions Examples c-7 - Applications of the Calculus of Residues

This can be the 7th textbook you could obtain at no cost containing examples from the speculation of advanced features. during this quantity we will observe the calculations or residues in computing exact different types of trigonometric integrals, a few varieties of incorrect integrals, together with the computation of Cauchy's valuable price of an essential, and the sum of a few forms of sequence.

Analysing Practical and Professional Texts: A Naturalistic Approach

Analysing functional Texts makes a speciality of texts as components of human utilization, displaying how written files and different 'texts' are fundamental to social association. It unearths social association itself to be not just textually-mediated in nature, but additionally textually-constituted, displaying how texts - specialist, technical or differently - in addition to a number of social-scientific methodologies hire the assets of standard language.

Data analysis for hyphenated techniques

According to a concrete set of operating MATLAB courses, the publication starts off with a quick application of snippets describing simple rules and proceeds to a whole software software filling a vital analytical want: acquiring natural spectra from the saw overlapping spectra, with common deviations for the options got.

Economic Analysis of Institutions and Systems

Within the past due Eighties, the sector of comparative economics and NATO confronted an analogous challenge: the specter of obsolescence. A predictable response of these who had made significant investments in either comparative economics and NATO used to be to appear for a brand new activity. It was once time to assert: comparative monetary platforms are useless, lengthy reside comparative fiscal structures.

Additional info for Analysis, modeling and control of doubly-fed induction generators for wind turbines

Sample text

This means that the increased aerodynamic capture that can be achieved by a larger converter has, thus, a greater impact than the increased converter losses. Worth stressing is that the main reason for using a variable-speed turbine instead of a fixed-speed turbine is not the energy efficiency, instead it is the possibility of lowering the mechanical stresses [53] and also improving the power quality [58]. 1 Introduction In this section, different aspects of designing and implementing control systems for doublyfed induction generators (DFIGs) are treated.

However, it is also possible to align the synchronous coordinate system with, for example, the grid voltage. Space vectors in synchronous coordinates will be dc quantities in the steady state. 2 Power and Reactive Power in Terms of Space Vectors The instantaneous power, P , in a three-phase system is given by 3 3 P = v a ia + v b ib + v c ic = Re [vs (is )∗ ] = Re [vi∗ ] . e. K = 1/ 2, yields P = 3Re [vi∗ ] . , the same as active power in terms of phasors. It is also possible to define a quantity the instantaneous reactive power, Q, as the corresponding imaginary part of the above equation [5]: Q = 3Im [vi∗ ] .

In [35], a lower fixed-speed IG WT efficiency was reported than in this study. The reason for this is that the IG in this study has two generators and lower iron losses. 4 Discussion In Fig. 12 it can be seen that the two-generator system (FSIG 2), the DFIG system, and the PMSG system have almost the same efficiency. In [16] it was found that the DFIG system produced 60% more energy compared to a fixed-speed system. However, in this study the produced energy of the systems was found to be similar.

Download PDF sample

Rated 4.99 of 5 – based on 36 votes