Title :
AC line current variation on a three-phase PWM drive with AC line impedance
Author :
Schieman, R.G. ; Khuwatsamrit, T.
Author_Institution :
Reliance Electr. Co., Athens, GA, USA
Abstract :
The AC line current to a fully loaded, three-phase pulse-width modulation (PWM) drive varies with the AC line impedance. The PWM drive consists of a three-phase diode bridge supplying DC power to a bus capacitor and an inverter. The lower the per-phase line inductance, the greater the RMS AC line input current. AC line current peak, and harmonic currents. Results from a computer study that tabulated the RMS current and harmonics are presented. The study considers the effect of reduced line current due to diode current commutation with higher line inductance. Data from a laboratory test set-up are tabulated and confirm the results.<>
Keywords :
commutation; electric drives; harmonics; invertors; pulse width modulation; AC line current variation; AC line impedance; DC power; RMS AC line input current; bus capacitor; computer study; diode bridge; diode current commutation; harmonic currents; inverter; pulse-width modulation; three-phase PWM drive; Bridges; Capacitors; Diodes; Impedance; Inductance; Laboratories; Power supplies; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152316
