Title :
Analysis of random PWM switching methods for three-level power inverters
Author :
Shrivastava, Yash ; Hui, S.Y.
Author_Institution :
Dept. of Electr. Eng., Sydney Univ., NSW, Australia
fDate :
11/1/1999 12:00:00 AM
Abstract :
This paper presents a generalized theory which covers both two-level and three-level random pulsewidth modulation (RPWM) schemes. Various three-level RPWM schemes with low switching frequency are presented and compared with two-level schemes. Three-level RPWM schemes have less discrete harmonics and continuous noise than two-level RPWM schemes. They have desirable spectral characteristics and can be employed in high-voltage inverter-fed motor drives. Measurements have confirmed the theory and the attractive features of three-level RPWM schemes
Keywords :
PWM invertors; switching circuits; continuous noise; discrete harmonics; random PWM switching methods analysis; random pulsewidth modulation; spectral characteristics; three-level power inverters; three-level random PWM; two-level random PWM; Acoustic noise; Councils; Insulated gate bipolar transistors; Motor drives; Power system harmonics; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Switching frequency; Thyristors;
Journal_Title :
Power Electronics, IEEE Transactions on
