DocumentCode :
1287202
Title :
A soft-switched, high-frequency resonant rectifier and characteristics of the controlled system
Author :
Choi, Hyun Chil ; Youn, Myung Joong
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Volume :
12
Issue :
1
fYear :
1997
fDate :
1/1/1997 12:00:00 AM
Firstpage :
161
Lastpage :
172
Abstract :
In this paper, a high frequency and soft-switched AC/DC rectifier employing a series-type resonant circuit is proposed to obtain the sinusoidal AC line current. Using the proposed rectifier, the high power factor and low harmonic currents are obtained in the AC line. Furthermore, several advantages such as the high power density and wide output voltage range can also be available. To regulate the output voltage of the proposed circuit, the digital proportional-integral (PI) controller is used whose sampling time corresponds to the zero-crossing point of the AC line voltage. Including this controller, the model for the closed-loop system is developed in order to examine the stability and dynamic characteristics. With this model, the gain of the PI-controller is determined by the pole assignment technique and the closed-loop dynamics is investigated by the root locus plots. A good agreement is made between the simulated and experimental results
Keywords :
AC-DC power convertors; closed loop systems; controllers; digital control; pole assignment; power engineering computing; power factor; rectifying circuits; resonant power convertors; root loci; stability; switching circuits; two-term control; voltage control; voltage regulators; closed-loop system; digital proportional-integral controller; dynamic characteristics; high power density; high power factor; high-frequency resonant rectifier; low harmonic currents; output voltage regulation; pole assignment technique; quantum boost series resonant rectifier; root locus plots; series-type resonant circuit; sinusoidal AC line current; soft-switched AC/DC rectifier; stability; wide output voltage range; zero-crossing point; Digital control; Frequency; Pi control; Power system harmonics; Proportional control; RLC circuits; Reactive power; Rectifiers; Resonance; Voltage;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/63.554182
Filename :
554182
Link To Document :
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