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In this article, the tuning of feedback gains of a variable structure load frequency controller by genetic algorithm optimization of selected performance indices is presented. The load frequency control of a single- and multi-area power system has been carried out. The effect of generator rate...
The authors are thankful to Tarkan Erdik and Zekai en for their keen interest in our article (M. Jaya Bharata Reddy and D. K. Mohanta, “A wavelet-neuro-fuzzy combined approach for digital relaying of transmission line faults,” Elect. Power Compon. Syst. , Vol. 35, No. 12, pp. 1385-1407, 2007)...
This article presents a direct torque control of doubly-fed induction generators with a space vector modulation scheme for wind energy conversion. The scheme is to independently control the torque and reactive power flow of the doubly-fed induction generator and directly compute the voltage...
The power loss in switching devices plays an important role in the design of static converters. The power dissipated during the on-state of semiconductor switches (conduction loss) is a substantial portion of the total switch losses, especially in low-frequency converters. Conduction loss may...
This article presents a new technique for on-line identification of an induction motor stator resistance parameter. The technique is designed as an upgrade of the natural field orientation system in a shaft-sensorless indirect field-oriented control induction motor drive. The proposed upgrade...
In many situations, a utility would like to know how much each component in the system contributes to the unreliability consequences associated with load point and system outages. This article proposes an unreliability tracing principle, model, and an approach to address this question. A...
Computers in the world operate continuously, which makes their efficiency a very critical issue. An attempt of improving that efficiency by utilizing power electronics circuits based on active power factor correctors have been simulated and tested. The effect of using the active power factor...
This article presents a novel speed controller based on multi-resolution decomposition analysis of the discrete wavelet transform for vector-controlled induction motor drives. The field-oriented control principle is used to decouple the flux and torque components of the induction motor dynamics....
In competitive electricity markets, the locational marginal price, or spot price, of power has become an important indicator of competitiveness and market efficiency. System operators throughout the world utilize the locational marginal price of active power for congestion management, auctioning...
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