Title :
A new low-frequency state model of a three-phase three-switch three-level fixed-frequency PWM rectifier
Author :
Kanaan, H. ; Al-Haddad, K. ; Chaffai, R. ; Duguay, L. ; Fnaiech, Farhat
Author_Institution :
Ecole de Technologie Superieure, Montreal, Que., Canada
Abstract :
This paper presents a new dynamic model of a three-phase, three-switch, three-level, fixed-frequency pulse-width-modulated (PWM) rectifier. The modeling approach uses the state-space averaging technique in continuous current mode. The averaging process is applied on two time intervals: the switching period for average current evaluation; and the mains period for average voltage computation. A basic mathematical model of the converter is first established. A simplified time-invariant model is then deduced using rotating Park transformation. The steady-state regime is analyzed on the basis of the obtained model, and converter design criteria are consequently discussed. Numerical simulations are carried out in order to demonstrate the effectiveness of the proposed modeling approach.
Keywords :
AC-DC power convertors; PWM power convertors; numerical analysis; rectifying circuits; state-space methods; switching circuits; average current evaluation; average voltage computation; continuous current mode; design criteria; dynamic model; low-frequency state model; mains period; mathematical model; numerical simulations; rotating Park transformation; simplified time-invariant model; state-space averaging technique; switching period; three-phase three-switch three-level fixed-frequency PWM rectifier;
Conference_Titel :
Telecommunications Energy Conference, 2001. INTELEC 2001. Twenty-Third International
Conference_Location :
Edinburgh, UK
Print_ISBN :
0-85296-744-6
DOI :
10.1049/cp:20010626