This paper introduces the differential cryptanalysis of additive stream ciphers, and develops its theoretical basis. The relationships between differential and other types of stream cipher analysis are presented. The conservation laws of patterns and of mutual information are derived. The cryptographic significance of pattern distribution of keystream sequences is shown. The cryptographic trans...

The doubly fed induction generator (DFIG) is one of the most popular technologies used in wind power systems. With the growing use of DFIGs and increasing power system dependence on them in recent years, protecting of these generators against internal faults is more considered. Loss of excitation (LOE) event is among the most frequent failures in electric generators. However, LOE detection stud...

One of the main actions required to face and limit global warming is substitution conventional fossil-fueled electrical generators with renewable ones. Thus, it becomes fundamental create non-dispatchable able provide services for power system stabilization that nowadays are delivered by Particularly, usually connected through electronic converters lacking natural responses frequency variations...

INTRODUCTION THERE has been a trend in recent years toward larger capacity turbine generators. Larger output systems draw worldwide interest, and from the standpoint of efficient use of resources, expectations are particularly focused on large-capacity 2-pole generators for coalfired power plants. Hitachi has been in the forefront of efforts to develop better large-output 2-pole generators to m...

This paper describes the model-free control approaches for permanent magnet-assisted (PMa) synchronous reluctance motors (SynRMs) drive. The important improvement of proposed technique is ability to determine behavior state-variable system during both fixed-point and transient operations. mathematical models PMa-SynRM were firstly written in a straightforward linear model form show known unknow...