A high efficient and reliable DC-DC converter for Electronically Controlled Pneumatic brake system applications

Author

Zhiwu Huang ; Xiaohui Qu ; Weirong Liu ; Kai Gao ; Jiangang Liu

Author_Institution

Sch. Of Inf. Sci. & Eng., Central South Univ., Changsha, China

fYear

2014

Firstpage

5012

Lastpage

5018

Abstract

The Electronically Controlled Pneumatic (ECP) brake system is being applied to the heavy-haul trains for its control accracy and real time performance. A high power supply with high efficiency and reliability is essential to the safe operation of the ECP brake system. In this paper, a push-pull forward converter with a secondary full bridge rectifier is proposed for the ECP power supply. The voltage stress of the rectifier diodes can be reduced by a modified nodissipative snubber. Furthermore, hybrid control methods and criteria are utilized to improve the converter performance, including forced flux balancing circuit design, power supply output impedance and noise requirements. Finally, A 2.5kW prototype of the converter with efficiency up to 93% verifies the proposed circuit and theoretical analysis.

Keywords

DC-DC power convertors; brakes; pneumatic systems; railway rolling stock; snubbers; ECP power supply; electronically controlled pneumatic brake system applications; heavy haul trains; high efficient DC-DC converter; nodissipative snubber; power 2.5 kW; push-pull forward converter; rectifier diode; reliable DC-DC converter; voltage stress; Capacitors; Clamps; Impedance; Power supplies; Snubbers; Switches; Voltage control; DC-DC converter; ECP; High efficiency; Output impedance; Push-pull forward;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE

Type

conf

DOI

10.1109/IECON.2014.7049261

Filename

7049261