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Wavelet modeling of motor drives applied to the calculation of motor terminal overvoltages

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3 Author(s)
Jianguo Liu ; Bechtel Corp., Frederick, MD, USA ; P. Pillay ; H. Douglas

The wavelet is a powerful tool that has emerged for the calculation of power system transients. In this paper, a wavelet motor drive model is developed and applied to the overvoltage problem which occurs with high dv/dt inverters. This technique is fundamentally different from EMTP and Pspice, which are time-domain methods. Wavelet models of typical passive parameters are derived and then applied to the problem of motor terminal overvoltages, which occurs with long cable lengths. It is proved that the simulation results with wavelet modeling is faster in the solution of this complex, power system simulation problem. Additional insight is possible by examining the wavelet coefficients.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:51 ,  Issue: 1 )