Title :
A New Reflected Wave Modeling Technique for PWM ASD-Motors
Author :
Amarir, Said ; Al-Haddad, Kamal
Author_Institution :
Ecole de Technol. Superieure, Montreal, Que.
Abstract :
This paper presents a new technique to model the high frequency overvoltages and their associated currents due to the inverter supply and the cable length on PWM ASD-motors. Detailed mathematical formulas describing the transient voltage and current in the cable are developed. Modeling takes into account: cable physical (length) and electrical characteristics (R,L,G,C; inverter impedance as well as voltage rise and fall times; motor impedance. The proposed technique for modeling overvoltages, applicable for ASDs with lossless cables, proves to be faster during execution and more precise in simulation than the techniques used in PSB and EMTP softwares. It is more adapted to the ASDs in coordination between the systems and their feeding cables in order to protect the motor. This paper includes simulation results using Matlab/Simulink softwares and important experimental outcomes on an industrial 5 kVA ASD prototype
Keywords :
PWM invertors; machine protection; motor drives; overvoltage protection; variable speed drives; 5 kVA; EMTP softwares; Matlab-Simulink softwares; PWM adjustable speed drive-motors; inverter supply; motor impedance; motor protection; reflected wave modeling technique; Cables; Electric variables; Frequency; Impedance; Mathematical model; Pulse width modulation; Pulse width modulation inverters; Surges; Variable speed drives; Voltage; Adjustable Sped Drive (ASD) Motors; Electromagnetic Transient Program (EMTP); Power System Blockset (PSB); Pulse Width Modulation (PWM);
Conference_Titel :
Industrial Electronics, 2006 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0496-7
Electronic_ISBN :
1-4244-0497-5
DOI :
10.1109/ISIE.2006.295967
