| |
Three-Phase AC/DC/AC Converter with Random Pulse Position PWM
| [View]
[Download]
|
| Author(s) |
B.-R. Lin; H.-H. Lu |
| Abstract |
A three-phase ac/dc/ac converter using the d-q axis concept and hysteresis current control
strategy to improve power quality in the input side and using a random pulse-width modulation
(RPWM) approach in the output side to reduce annoyed tonal noise or mechanical vibration is
proposed in this paper. The control scheme based on the synchronous reference frame for three-phase
rectifier is adopted to achieve a high power factor and low harmonic currents. To reduce the
mechanical vibration from ac machine drive, stochastic asynchronous PWM scheme with random
lagging or leading edge modulation is adopted. The frequency distribution of harmonics is spreading
in a wide frequency range. Simulation and experimental results are presented to verify the
characteristics of unity power factor at the input side and the absence of annoyed tonal noise in the
motor drive. |
| Download |
| Filename: | EPE1999 - PP00223 - Bor-Ren.pdf |
| Filesize: | 94.17 KB |
|
| Type |
Members Only |
| Date |
Last modified 2004-04-05 by System |
| |
 |