Title :
A New High Frequency Modeling Technique of Travelling Waves in Long Cable PWM Drives
Author :
Amarir, Said ; Al-Haddad, Kamal
Author_Institution :
Canada Res. Chair in Energy Conversion & Power Electron., Ecole de Technol. Superieure, Montreal, Que.
Abstract :
This paper presents a new modeling technique to analyze the high frequency over voltage problem in long cable PWM drives. Using the traveling wave´s theory, detailed mathematical formulas describing the transient voltage and current in the cable are first developed in the frequency domain. They took into account cable length and its electrical characteristics (R,L,G,C), motor impedance, inverter impedance as well as inverter voltage rise and fall times. The developed mathematical time domain formulas are then solved using Matlab-Simulink software that constitute a new dedicated modeling aimed at ASDs with long lossless feeding cables. Contrary to the models found in SPS, EMTP and other commercial softwares, the proposed modeling technique allows the simulation of the voltage waveform without any representation of the ASD-system components. This paper includes simulation results and important experimental outcomes on an industrial 5 kVA ASD prototype
Keywords :
PWM invertors; motor drives; power cables; transients; 5 kVA; high frequency modeling technique; inverter impedance; inverter voltage; long cable PWM drives; motor impedance; transient current; transient voltage; travelling waves; Cables; Computer languages; Electric variables; Frequency domain analysis; Impedance; Mathematical model; Pulse width modulation; Pulse width modulation inverters; Variable speed drives; Voltage control; Adjustable Sped Drive (ASD) Motors; Distributed parameters model (DPM); Electromagnetic transient Program (EMTP); Pulse Width Modulation (PWM); SimPowerSystems (SPS);
Conference_Titel :
IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Conference_Location :
Paris
Print_ISBN :
1-4244-0390-1
DOI :
10.1109/IECON.2006.348041
