توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Evaluation of the Effects of the Regular Voltage Fluctuations on Induction Motors Behavior
نویسنده(ها): ، ،
اطلاعات انتشار: بیست و چهارمین کنفرانس بین المللی برق، سال
تعداد صفحات: ۸
Flicker is an important power quality index and is currently receiving increasing concern from power system engineers. The voltage fluctuations of the electrical power supply can generate many undesirable effects on both industrial and domestic apparatus. This paper presents the methodology and results of investigations undertaken to examine the response of an induction motor to small perturbations in the supply voltage. The aim of this paper is to evaluate the effects of the low–frequency voltage amplitude modulation on induction motors behavior. The work is based on small–signal model of induction motor to describe induction machine behavior. Furthermore the induction motor response to frequency of voltage fluctuations is examined. It will be shown that different induction motors have various behaviors with respect to regular voltage fluctuations.<\div>

۲A NewMethod toMitigate Voltage Fluctuation of a Fixed SpeedWind Farm Using DFIG Wind Turbine
نویسنده(ها): ، ،
اطلاعات انتشار: چهارمین کنفرانس نیروگاههای برق، سال
تعداد صفحات: ۷
One of the important power quality aspects is flicker. Wind turbines are a source of power fluctuations which may cause flicker disturbances. There are numerous of factors that affect flicker emission of grid–connected wind turbines during continuous operation, such as wind characteristics (e.g. mean wind speed, turbulence intensity) and grid conditions (e.g. short circuit capacity, grid impedance angle, load type). The type of wind turbine also has influence on flicker emission. In this paper, the flicker emission of wind turbines equipped with squirrel–cage induction generators is investigated. Also show that in a wind farm by the replacement of some fixed speed wind turbines with DFIG wind turbines can reduce the flicker emission. This wind farm model has been implemented and simulated by using MATLAB\ Simulink. Simulation results show that the combination of fixed speed and variable speed wind turbines in output voltage of fixed speed wind farms is an effective means for flicker mitigation during continuous operation.<\div>
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