A ZVS bidirectional three-level DC-DC converter with direct current slew rate control of leakage inductance

Author

Lingyu Xu ; Deshang Sha ; Hongyu Chen

Author_Institution

Sch. of Autom., Beijing Inst. of Technol., Beijing, China

fYear

2014

fDate

14-18 Sept. 2014

Firstpage

4410

Lastpage

4415

Abstract

A bidirectional isolated three-level DC-DC converter is proposed. Direct current slew rate (DCSR) control of leakage inductance is proposed to minimize conduction loss and current stress facing turns-ratios mismatch and parasitic parameters. Limitations of conventional PWM plus phase shift (PPS) control, comparison between PPS control and the proposed DCSR control are given. Besides, the voltage balance issue and the implementation of the proposed DCSR control are also given. With the proposed DCSR control, lower conduction loss, lower peak current can be obtained when the turns-ratio mismatch and parasitic parameters are considered. A 1kw prototype is built to verify the proposed topology employing the proposed DCSR control.

Keywords

DC-DC power convertors; PWM power convertors; zero voltage switching; DCSR control; PPS control; PWM plus phase shift control; ZVS bidirectional three-level DC-DC converter; conduction loss; direct current slew rate control; leakage inductance; parasitic parameters; turns-ratios mismatch; Clamps; Control systems; Current transformers; Inductance; Pulse width modulation; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2014 IEEE

Conference_Location

Pittsburgh, PA

Type

conf

DOI

10.1109/ECCE.2014.6953724

Filename

6953724