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Simplified model of an inverter-fed induction motor for the analysis of a dc power system

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2 Author(s)
Leedy, A.W. ; Dept. of ECE, Auburn Univ., AL, USA ; Nelms, R.M.

The development of a simplified model of an inverter-fed induction motor that can be used in the analysis of a dc power system containing motor drive loads is presented. The model is based on the steady-state T-type equivalent circuit of the induction motor and the input-output relationships of the six-step voltage source inverter. In the simplified model, a V-I load characteristic curve is established that allows the inverter, motor, and load to be replaced by a current-controlled voltage source. The model is verified using PSPICE and Matlab. The simplified model also has the potential to be utilized in the analysis of a multiple bus dc power system by incorporating the V-I load curves of each motor-drive load into a Newton-Raphson iterative procedure.

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System Theory, 2004. Proceedings of the Thirty-Sixth Southeastern Symposium on

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