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Reducing Common Mode Noise in Phase-Shifted Full-Bridge Converter
- Source :
- IEEE Transactions on Industrial Electronics. 65:7866-7877
- Publication Year :
- 2018
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2018.
-
Abstract
- The phase-shifted full-bridge (PSFB) converter has been widely used in medium-to-high power applications because of simple topology and ease of achieving soft-switching for power switches. However, with the phase-shifted control, the electric potential variation of the two phase-leg midpoints happens at different times, and the displacement current generated by two midpoints through associated parasitic capacitance (including the parasitic capacitance between two midpoints to ground and the transformer inter-winding capacitance) cannot be cancelled by each other, resulting in a serious common mode (CM) noise. Moreover, the resonant inductor voltage affects the electric potentials of the transformer terminals, which also generates CM noise. To reduce the CM noise in the PSFB converter, this paper proposes a symmetrical resonant inductor together with symmetrical transformer configuration to eliminate the influence of the resonant inductor voltage on the CM noise. Then, a passive cancellation circuit is introduced to cancel the effect of the voltages between the midpoints and the ground on the CM noise. A 1-kW PSFB converter prototype has been fabricated and tested in the lab, and the experimental results are provided to verify the proposed methods.
- Subjects :
- Physics
business.industry
020208 electrical & electronic engineering
Electrical engineering
020206 networking & telecommunications
02 engineering and technology
Inductor
Capacitance
Electromagnetic interference
law.invention
Parasitic capacitance
Control and Systems Engineering
law
Electromagnetic coil
0202 electrical engineering, electronic engineering, information engineering
Common-mode signal
Electrical and Electronic Engineering
business
Transformer
Voltage
Subjects
Details
- ISSN :
- 15579948 and 02780046
- Volume :
- 65
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Industrial Electronics
- Accession number :
- edsair.doi...........8b0510bcc3dbaa2535845e32227a4f2f