By Topic

Zero-Voltage and Zero-Current Switching Two-Transformer Full-Bridge Converter Using the Output-Voltage-Doubler

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
H. K. Yoon ; KAIST/Dept. of Electrical Engineering, Daejeon, Republic of Korea. ; E. S. Choi ; S. K. Han ; G. W. Moon
more authors

A zero-voltage switching (ZVS) and zero-current switching (ZCS) two-transformer full-bridge PWM converter using the output-voltage-doubler is proposed in this paper. It is based on the phase-shifted full-bridge with series-connected two transformers (TTFB) which act as an output inductor as well as a main transformer. The TTFB converter achieves ZVS for all the switches inherently even at a light load with the use of the energy stored in the magnetizing inductance of each transformer. However, it has several drawbacks such as circulating energy in freewheeling mode, loss of duty cycle, and high voltage stress across the output rectifier diodes. To overcome these drawbacks, the proposed converter employs an output-voltage-doubler which reduces the circulating current, the freewheeling interval, and the voltage stress across output rectifier diode. The operational principle, theoretical analysis, and design considerations are presented. Also, to confirm the operation, validity, and features of the proposed converter, experimental results from a 420 W, 385 Vdc/210 Vdc prototype are presented

Published in:

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International  (Volume:2 )

Date of Conference:

14-16 Aug. 2006