| Popis: |
In this work, the induction machine (IM) model is developed using the VBR (Voltage Behind Reactance) technique in the ATP-EMTP program, using the ATPDraw@ user interface and the MODELS tool available in EMTP. Starting from the equations of the induction machine in space vectors coordinate frame, referred to the stator, the VBR model is directly obtained. This model is then represented by a circuitry using the ATPDraw program, considering the resistance, inductance and force electromotive (FEM) behind this impedance. The value of the FEM is determined by a programmed module written in MODELS. The developed model allows the IM in steady state and transient analysis, including harmonics and possible unbalances. The results obtained with this model are compared with similar simulations performed in other tools and with some models available both in ATP-EMTP and MATLAB/SIMULINK@. |
