Over voltage phenomenon for an induction motor

There is a possible risk of the voltage capability of stator winding insulation recommended by existing standards being exceeded in many cases of the induction motors which are connected to the long cabels. Hence some of the improvement methods need to be implemented for long cable which are fed to the adjustable speed drives with PWM technique. This paper proposes that the modeling of the Induction motor and the when the high frequency is applied and also it needs to calculate the overvoltage in the inverter fed induction motors through the long cabels. Due to the high frequency interference there are many problems will accurs at the different stages. This paper proposes a new methodology for the impedance of the motor and the high frequency characteristics of the cables. This method is based the cables under the conditions of long length. The Effect of cable length and cable gauge on the over voltages are analyzed here The cable characteristics and performance of the induction motor can be implemented using the MATLAB/Simulink which is convenient to analyze the proposed method.