Title :
A novel near-unity power factor AC drive
Author :
Liu, Fangrui ; Maswood, A.I.
Author_Institution :
Center for Adv. Power Electron., Nanyang Technol. Univ., Singapore
Abstract :
In this paper, a new method of improving the input current total harmonic distortion (THD) as well as power factor of a three-phase suppressed-link rectifier-inverter is presented. This proposed method makes use of a novel controlled diode rectifier. This paper illustrates how the proposed new method can enable a rectifier-inverter AC motor drive working in a wide power range with near unity power factor and low harmonics. The analysis of the circuit with new control method is described. The main features of the topology are low cost, small size, high efficiency and simplicity.
Keywords :
PWM invertors; electric variables control; harmonic distortion; induction motor drives; power conversion harmonics; rectifying circuits; THD; diode rectifier; rectifier-inverter AC motor drive; three-phase suppressed-link rectifier-inverter; total harmonic distortion; unity power factor; Bidirectional control; Diodes; Inductors; Power generation; Power system harmonics; Pulse width modulation; Reactive power; Rectifiers; Switches; Voltage;
Conference_Titel :
Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on
Print_ISBN :
0-7803-7885-7
DOI :
10.1109/PEDS.2003.1283124
