Title :
An improved RPWM method based on a novel multi-level linear congruential random-number generator
Author :
Almarri, Khalid Ali ; Balda, Juan Carlos ; Carr, Ken
Author_Institution :
Gen. Dept. of Planning, Dev. & Inf. Tech., Dubai, United Arab Emirates
Abstract :
A novel multi-level pseudo-random number generator is proposed to improve random pulsewidth modulation (RPWM) techniques by increasing the length of their nonrepeatable switching-frequency sequence. This paper addresses the proposed generator and experimentally illustrates the advantages of employing such a generator to randomize the switching frequency in RPWM techniques. The example of a two-level PWM VSI 3-phase induction motor drive with a DSP based digital controller is discussed
Keywords :
PWM invertors; digital control; digital signal processing chips; induction motor drives; machine control; random number generation; DSP; digital controller; multi-level linear congruential random-number generator; nonrepeatable switching-frequency sequence; random pulsewidth modulation; switching frequency randomisation; three-phase induction motor drive; two-level PWM VSI; AC motors; Acoustic noise; Power generation economics; Pulse generation; Pulse modulation; Pulse width modulation; Random number generation; Space vector pulse width modulation; Switching frequency; Wideband;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.878843
