Title :
A simple, reliable, cost and volume saving DC-link discharge device for electric vehicles
Author :
Kreutzer, Otto ; Eckardt, Bernd ; Marz, Martin
Author_Institution :
Fraunhofer IISB, Erlangen, Germany
Abstract :
This paper describes a DC-link discharge device that is smaller and cheaper than conventional resistor or PTC-based solutions. The basic idea is to use the switching element (IGBT, Mosfet), that is usually controlling the PTC or resistor, in a linear mode and decrease the maximum power by shifting the discharge curve from an uncontrolled square voltage dependent curve to a roughly constant power characteristic. The advantages in volume and costs are described and the technical setup is explained and compared to the conventional solutions.
Keywords :
electric vehicles; power electronics; DC-link discharge device; PTC-based solutions; discharge curve; electric vehicles; switching element; uncontrolled square voltage dependent curve; Discharges (electric); Insulated gate bipolar transistors; Resistors; Silicon carbide; Vehicles;
Conference_Titel :
Transportation Electrification Conference and Expo (ITEC), 2015 IEEE
Conference_Location :
Dearborn, MI
DOI :
10.1109/ITEC.2015.7165800
