A voltage-mode controlled high-input-power-factor AC line conditioner with minimized output voltage harmonics

Author

Lo, Yu-Kang ; Chen, Chern-Lin

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

1994

fDate

20-25 Jun 1994

Firstpage

369

Abstract

A new AC line conditioner is presented. This system consists of a high input power factor half-bridge switch-mode rectifier (SMR), DC link capacitors and a low output harmonic half-bridge inverter. The rectifier is operated under voltage-mode feedback. No current sensing is required. The inverter is controlled by an EPROM-based modulator. Optimized sinusoidal PWM patterns compensating DC link voltage ripple and dead time effects are programmed. Synchronizing the SMR and the inverter can eliminate the voltage imbalance between DC link capacitors. The presented system is feasible for single- and three-phase applications

Keywords

EPROM; bridge circuits; digital control; invertors; power capacitors; power convertors; power engineering computing; power factor; power system harmonics; pulse width modulation; rectifiers; rectifying circuits; switching circuits; voltage control; AC line conditioner; DC link capacitors; DC link voltage ripple compensation; EPROM; dead time compensation; half-bridge inverter; half-bridge switch-mode rectifier; output voltage harmonics; power factor; single-phase; sinusoidal PWM patterns; synchronisation; three-phase; voltage imbalance; voltage-mode feedback; Capacitors; Circuits; Costs; Current control; Diodes; Feedback; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation inverters; Reactive power; Rectifiers; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE

Conference_Location

Taipei

Print_ISBN

0-7803-1859-5

Type

conf

DOI

10.1109/PESC.1994.349707

Filename

349707