Title :
Analysis of random PWM switching methods for 3-level power inverters
Author :
Shrivastava, Yash ; Hui, S.Y.R.
Author_Institution :
Dept. of Electr. Eng., Sydney Univ., NSW, Australia
Abstract :
This paper presents a generalised theory which covers both two-level and three-level random PWM (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 :
DC-AC power convertors; PWM invertors; harmonic distortion; power system harmonics; switching circuits; continuous noise; discrete harmonics; generalised theory; measurements; motor drive applications; random PWM switching methods; spectral characteristics; switching frequency; three-level power inverters; Distribution functions; Pulse width modulation; Pulse width modulation inverters; Random number generation; Random processes; Signal analysis; Signal design; Signal generators; Signal processing; Signal sampling;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703216
