Modelling of voltage conditions on asynchronous motor supplied from frequency converter

In the present time asynchronous motors supplied from frequency converters are enforced for controlled drives. By small and medium rated power it is predominantly about frequency converters with voltage intercircuit. The course of voltage that comes to the motor terminals and so into the stator winding is not sinusoidal but consisted of rectangular pulses. In dependence of converter control, the length of the cable between converter and motor etc. the above mentioned voltage pulses have high rise time and overshoots, amplitude of which considerable beats the voltage magnitude in the intercircuit. In our paper we want to present our results of modelling of transient effects in the system converter - cable line - motor.