Research and Development Random pulse width modulation
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2013, Vol 6, Issue 9
Abstract
Random pulse width modulation (RPWM) approaches can make the harmonic spectrum of inverter output voltage be continuously distributed without affecting the fundamental frequency component, and thus the acoustic noise and mechanical vibration of an inverter-fed ac motor drive are greatly reduced. First, the effects of the attributes of random signal on the inverter output harmonic spectrum distribution characteristics are analyzed using intuitive concept. Then based on which, the quantitative design, Simulink simulation and implementation of the proposed RFPWM inverter are introduced. The proposed RFPWM inverter is employed to power an indirect field-oriented induction motor drive. The simulated and measured results indicate that uniform random distribution of inverter output harmonic spectrum and thus smaller acoustic noise and mechanical vibration are obtained by the proposed RFPWM scheme.
Authors and Affiliations
Abdolreza Esmaeli| Plasma Physics and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, Tehran, Iran. email: aesmaeli@aeoi.org.ir, Mohsen Mobini| Faculty of Electrical Engineering, Maziar University, Nour, Iran
Keywords
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