تکنیک های کنترل بردار برای درایو کشش با ماشین های القایی - مقایسه

Nowadays trends in railway transportation are improvement of passengers comfort, safety, speed and reliability of transportation. This paper deals with improvement of aforementioned performances from the traction drive view. The most often exploited drives system is the induction motor supplied from inverter therefore strategy of its control has direct influence on reliability. Control techniques exploited in traction drives are ‘field oriented control’ (FOC) and ‘direct torque control’ (DTC). For investigation of the drive performances controlled with these two techniques the parameters of 152 kW induction motor are used. The comparison can be done on various criteria, but in this paper comparison will be focused on influence of key parameters including magnetizing inductance Lm, rotor inductance Lr and rotor resistance Rr. The study is done by simulation using the Simulink. The simulation and evaluation of both control strategies are performed using actual parameters of induction machine fed by an IGBT PWM inverter.