The doubly-fed generators (DFIG) have clear superiority for the applications of large capacity and limited-range speed control case due to the partially rated inverter, lower cost and high reliability. These characteristics enable the doubly-fed wound rotor induction machine to have vast applications in wind-driven generation.In this paper Combined Vector and direct power control (CVDPC) strate...

We present two efficient and simple fault attacks on the shrinking generator. In a first case if the attacker can stop control generator for some small number of steps and observe the output, then with high probability he can deduce the full control sequence, and so the other input bitstream. The second method assumes that the attacker can disturb the control sequence (in an unpredictable and r...

one of the main requirements for providing software security is the enforcement of access control policies, which is sometimes referred to as the heart of security. the main purpose of access control policies is to protect resources of the system against unauthorized accesses. any error in the implementation of access control policies may lead to undesirable outcomes. hence, we should ensure th...

This paper presents an efficient hybrid neurofuzzy control scheme for synchronous generator. The scheme proves to be beneficial as the control scheme targets for the better control of Synchronous generator when used along with other sub systems. The system is stabilize after t=0.13. The control parameter the performances indices of IAE are 4.755 for fuzzy and 7.242 for hybrid neuro fuzzy and fo...

Abstract: In this paper, we propose a switching state feedback control algorithm for a class of non-holonomic symmetric affine systems with multi-generators. The controllability Lie algebra of a multi-generator system is structurally different from that of single-generator systems, such as conventional chained form systems. A multi-generator dynamics is partially considered a single-generator s...

This paper presents the explicit electromagnetic transient model of a Doubly Fed Induction Generator (DFIG), that includes its coupling with the back-to-back converter, when the generator/converter set is connected to the wind farm’s Thevenin equivalent, as seen from DFIG’s terminals. Besides that, DFIG’s grid side converter control system is defined in detail, so that expressions for the direc...

Brushless doubly fed reluctance generator (BDFRG) has been recently suggested as a wind generator. Different control methods are presented in literature for the BDFRG, but there is a gap on control under unbalanced grid voltage condition (UGVC). This paper presents a predictive direct power control (PDPC) method for the BDFRG under UGVC. The proposed PDPC method is based on power compensation s...

This thesis deals with the modeling, analysis and control of a novel brushless generator for wind power application. The generator is named as rotating power electronic brushless doubly-fed induction machine/generator (RPEBDFIM/G). A great advantage of the RPE-BDFIG is that the slip power recovery is realized in a brushless manner. This is achieved by introducing an additional machine termed as...

Neutral landscape models have many applications in ecology, such as supporting spatially explicit simulations, developing and evaluating indices. However, current approaches provide few options to produce large landscapes with controlled composition fragmentation We introduce flsgen (Fragmented Landscape Generator), a new neutral generator that addresses this limitation by providing high level ...