This study analyzes the material deformation of electrical steel with aging and its effects on electromagnetic thermal characteristics a Brushless Wound-Field Synchronous Generator (BL-WFSG). First, in order to confirm applied BL-WFSG, magnetic property tests are performed core sheets old new generators. Those two generators made same material, so there was no difference except for their usage ...

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...

performing fast and accurate methods for modeling the electrical machines has been the subject of several studies and many authors proposed different procedures to attain this aim. beside the accuracy, the speed of the method is of great concern. on the other hand, the capability of the method to be changed according to the need is another important issue. finite element method provides relativ...

This paper presents an excitation controller design process for multimachine power systems with synchronous generators using adaptive backstepping approach to ensure robust performance against parametric uncertainties as well improve the transient stability during large disturbances. In this work, electrical dynamics of are described two-axis models while excitations represented IEEE Type II ex...

The growing importance of Microgrid in future power systems highlights critical challenges like microgrid control and stability. An islanded including distributed generations (DG), energy storage (ESS), different types loads (static or dynamic) is prone to instability. whole system must be analyzed designed operate within stable regions. This study models an inverter-interfaced which supplies s...

Results of an investigation on the application of STATCOM for damping subsynchronous resonance (SSR) in a multi-machine system is presented in this paper. For a multi-machine system which has a set of identical parallel turbine-generators or non-identical turbine-generators having torsional modes of the same frequency, generators may suffer from the same mode of torsional interaction correspond...

A hydrogenerator’s cost price is considerably influenced by the used and computed design values. The most important parameters in the design of micro hydro power plants synchronous generators are the power blanket, the current density in the statoric winding and the air gap size. In this work we analyze the impact of these parameters on the cost price for a family of hydro power plant synchrono...

Introduction: Modern medicine employs a wide variety of instruments with different physiological effects and measurements. Periodic verifications are routinely used in legal metrology for industrial measuring instruments. The correct operation of electrosurgical generators is essential to ensure patient’s safety and management of the risks associated with the use of high and low frequency ele...