logo

Standards Manage Your Business

We Manage Your Standards

SAE

SAE 2016-01-1234 : 2016

Efficiency Improvement of Boost Converter for Fuel Cell Bus by Silicon Carbide Diodes

Standard Details

The adoption of silicon carbide (SiC) power semiconductors is regarded as a promising means of improving the fuel efficiency of all types of electrically powered vehicles, including plug-in, electric, fuel cell, and hybrid vehicles (PHVs, EVs, FCVs, and HVs). For this reason, adoption in a wide variety of vehicles is currently being studied, including in the fuel cell (FC) boost converter of an FC bus. The FC boost converter controls the output voltage of the FC up to 650 V. In this research, SiC Schottky barrier diodes (SiC-SBDs) were adopted in the upper arm of an FC boost converter. Since the forward voltage (Vf) of SiC-SBDs is smaller than conventional Si-PiN diodes (Si-PiNDs), the conduction loss of SiC-SBDs is correspondingly smaller. Recovery loss can also be reduced by at least 90% compared to Si-PiNDs since the recovery current of SiC-SBDs is substantially smaller. Lowering the recovery current of the upper arm has the effect of reducing the superimposed current when the silicon insulated gate bipolar transistors (Si-IGBTs) in the lower arm turn on. As a result, the turn-on loss of the lower arm can be reduced by approximately 70%. It was confirmed that installing SiC-SBDs in the upper arm of the FC boost converter improved efficiency by 0.5% in the load range over 50%.

Cross Reference:

General Information

Status : ACTIVE
Standard Type: Main
Document No: SAE 2016-01-1234 : 2016
Document Year: 2016

Life Cycle

Currently Viewing

ACTIVE
SAE 2016-01-1234 : 2016
Knowledge Corner

Expand Your Knowledge and Unlock Your Learning Potential - Your One-Stop Source for Information!

© Copyright 2024 BSB Edge Private Limited.

Enquire now +