Title :
Harmonic minimization in a three-phase asymmetrical PWM rectifier
Author :
Islier, Ali Tugrul ; Ersak, Aydm ; Richards, Gill
Author_Institution :
Dept. of Electr. & Electron. Eng., Middle East Tech. Univ., Ankara, Turkey
Abstract :
A new pulse-width modulation (PWM) method for a three-phase bridge rectifier developed here gives minimized low order harmonics. As a PWM rectifier, it offers better input and output characteristics than phase-controlled rectifiers. It has inherited the characteristics of the PWM rectifier such as having high power factor at the input with low harmonic content of the input current and zero phase-shift of input voltage and current. The availability of power transistors at high power ratings enabled the implementation of PWM rectifiers much easily. The modulation method is applied to a DC motor drive system at 1 kW rating. A high speed microcontroller produces the switching pulses
Keywords :
DC motor drives; PWM power convertors; bridge circuits; power factor; power semiconductor switches; power system harmonics; power transistors; rectifiers; rectifying circuits; switching circuits; 1 kW; DC motor drive; bridge rectifier; characteristics; harmonic content; low order harmonics; microcontroller; modulation method; phase-shift; power factor; power transistors; ratings; switching pulses; three-phase asymmetrical PWM rectifier; Availability; Bridge circuits; DC motors; Power system harmonics; Power transistors; Pulse width modulation; Reactive power; Rectifiers; Space vector pulse width modulation; Voltage;
Conference_Titel :
Electrotechnical Conference, 1994. Proceedings., 7th Mediterranean
Conference_Location :
Antalya
Print_ISBN :
0-7803-1772-6
DOI :
10.1109/MELCON.1994.380974
