A High Power DC/DC Converter Designed for Single Coolant Loop Hybrid Electric Vehicle Application

2010-01-1254

04/12/2010

Event
SAE 2010 World Congress & Exhibition
Authors Abstract
Content
One potential system configuration for future hybrid electrical vehicles (HEV) is to use a single coolant loop for both internal combustion engines and power electronics inverters/converters. Under these conditions, coolant temperatures could be as high as 105°C. This paper proposes a high power DC/DC converter topology suitable for high temperature application. The new interleaved topology implements the power sharing on both high voltage side and low voltage side to alleviate the thermal stress. The DC/DC converter topology features a wide soft switching range to reduce the switching loss of the power semiconductor devices. In addition, a power module design approach is proposed to reduce the thermal resistance of the power semiconductor devices. The power-module-based approach provides for a higher level of integration by means of a wirebond-interconnected power stage. The more simplified interconnection strategy of this approach greatly increases the reliability and reduces the power loss and parasitic inductance. Detailed design considerations of key electrical and thermal parameters are provided. The concept is fully verified by experimental results with 105°C coolant, 5 kW, 200-400V to 14V isolated DC/DC converter prototypes.
Meta TagsDetails
DOI
https://doi.org/10.4271/2010-01-1254
Pages
8
Citation
Zhu, C., Shen, M., and Obrigkeit, M., "A High Power DC/DC Converter Designed for Single Coolant Loop Hybrid Electric Vehicle Application," SAE Technical Paper 2010-01-1254, 2010, https://doi.org/10.4271/2010-01-1254.
Additional Details
Publisher
Published
Apr 12, 2010
Product Code
2010-01-1254
Content Type
Technical Paper
Language
English