DocumentCode :
1224592
Title :
High-performance front-end converter for avionics applications [aircraft power systems]
Author :
Athalye, Praneet ; Maksimovic, Dragan ; Erickson, Robert
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Volume :
39
Issue :
2
fYear :
2003
fDate :
4/1/2003 12:00:00 AM
Firstpage :
462
Lastpage :
470
Abstract :
The distributed power systems of future commercial aircraft will adopt variable frequency generation (360 to 800 Hz). Front-end converters in the system will be required to have a high efficiency and a low total harmonic distortion (THD) of the input current. This paper explains the design of a zero-voltage-switching (ZVS) active-clamped isolated low-harmonic SEPIC rectifier for such applications. Utilization of the transformer leakage inductance for ZVS and a single-layer transformer design contribute to a high efficiency. An accurate averaged switch model has been developed, which shows that the control-to-input-current transfer function of this converter does not exhibit resonances observed in the conventional SEPIC. As a result, for closed-loop operation using average current control, damping of the coupling capacitor is not required. Operating at a switching frequency of 200 kHz, an experimental 100 W, 28 V output rectifier achieves a THD of 3-4% and efficiency exceeding 90% over the entire line frequency range.
Keywords :
aircraft power systems; circuit simulation; closed loop systems; power conversion harmonics; power transformers; rectifiers; switching convertors; transfer functions; 100 W; 200 kHz; 28 V; 360 to 800 Hz; 90 percent; SEPIC resonances; THD; aircraft distributed power systems; average current control closed-loop operation; averaged switch models; avionic high-performance front-end converters; converter control-to-input-current transfer functions; coupling capacitor damping; input current total harmonic distortion; line frequency range; operating switching frequency; single-layer transformers; transformer leakage inductance ZVS; variable frequency generation converters; zero-voltage-switching active-clamped isolated low-harmonic SEPIC rectifiers; Aerospace electronics; Aircraft; Distributed power generation; Frequency; Industrial power systems; Power system harmonics; Power systems; Rectifiers; Switches; Zero voltage switching;
fLanguage :
English
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9251
Type :
jour
DOI :
10.1109/TAES.2003.1207258
Filename :
1207258
Link To Document :
بازگشت