UPEC 2007

گزیده ای از خلاصه ی مقالات محمد رضا عسکری عضو هیئت مدیره ی شرکت، که در چهل و دومین کنفرانس بین المللی UPEC در سال ۲۰۰۷ در شهر بریگتون ارائه گردیده است:


عنوان مقاله:

Fire Angle control of TCR and TSC for reactive power control in order to reduce harmonics using neural network


عنوان مقاله:

Induction motors control using zero-crossing times signal of stator currents

چکیده ی مقاله:

The purpose of this study is to illustrate a new method for sensorless vector control of induction motors. This approach uses Zero-Crossing Times (ZCT) signal of stator current to stimate rotor speed. ZCT signal contains useful information which can be used for stimation of rotor speed and resistance. We have used this information for online estimation of rotor speed. To avoid time consuming Fast Fourier Transformation (FFT) analysis of ZCT signal, we have used switchable high order Butterworth Filters in order to extract rotor frequency. Simulation result has expressed good performance of this simple and inexpensive sensorless vector control of induction motors.